Bump github.com/fsnotify/fsnotify from 1.10.0 to 1.10.1

Bumps [github.com/fsnotify/fsnotify](https://github.com/fsnotify/fsnotify) from 1.10.0 to 1.10.1. - [Release notes](https://github.com/fsnotify/fsnotify/releases) - [Changelog](https://github.com/fsnotify/fsnotify/blob/main/CHANGELOG.md) - [Commits](https://github.com/fsnotify/fsnotify/compare/v1.10.0...v1.10.1) --- updated-dependencies: - dependency-name: github.com/fsnotify/fsnotify dependency-version: 1.10.1 dependency-type: direct:production update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] <support@github.com>
Fix: num_cpus could not be excluded
2026-05-14 09:17:29 +02:00 · 2026-05-11 03:27:51 +00:00 · 2026-05-07 14:47:23 +02:00 · 2026-05-07 12:25:07 +02:00 · 2026-05-06 13:22:02 +02:00 · 2026-05-06 10:42:06 +02:00
56 changed files with 1237 additions and 632 deletions
--- a/.github/workflows/Release.yml
+++ b/.github/workflows/Release.yml
@@ -270,7 +270,7 @@ jobs:
    - name: Install development packages
      run: |
          apt update && apt --assume-yes upgrade
-          apt --assume-yes install build-essential sed git wget bash
+          apt --assume-yes install build-essential sed git wget bash libdrm-dev
    # Checkout git repository and submodules
    # fetch-depth must be 0 to use git describe
    # See: https://github.com/marketplace/actions/checkout
@@ -321,7 +321,7 @@ jobs:
    - name: Install development packages
      run: |
          apt update && apt --assume-yes upgrade
-          apt --assume-yes install build-essential sed git wget bash
+          apt --assume-yes install build-essential sed git wget bash libdrm-dev
    # Checkout git repository and submodules
    # fetch-depth must be 0 to use git describe
    # See: https://github.com/marketplace/actions/checkout
--- a/13
+++ b/13
@@ -27,6 +27,17 @@ $(APP): $(GOSRC) go.mod
 	$(GOBIN) get
 	$(GOBIN) build -o $(APP) $(GOSRC_APP)

+# -ldflags:
+#   -s : drops the OS symbol table 
+#   -w : drops DWARF
+#   -> Panic stack traces still show function names and file:line
+.PHONY: build-stripped
+build-stripped:
+	make -C collectors
+	$(GOBIN) get
+	$(GOBIN) build -ldflags "-s -w" -trimpath -o $(APP) $(GOSRC_APP)
+
+.PHONY: install
 install: $(APP)
 	@WORKSPACE=$(PREFIX)
 	@if [ -z "$${WORKSPACE}" ]; then exit 1; fi
@@ -89,7 +100,7 @@ staticcheck:
 .PHONY: golangci-lint
 golangci-lint:
 	$(GOBIN) install github.com/golangci/golangci-lint/v2/cmd/golangci-lint@latest
-	$$($(GOBIN) env GOPATH)/bin/golangci-lint run
+	$$($(GOBIN) env GOPATH)/bin/golangci-lint run --enable errorlint,govet,misspell,modernize,prealloc,staticcheck,unconvert,wastedassign

 .ONESHELL:
 .PHONY: RPM
--- a/README.md
+++ b/README.md
@@ -11,13 +11,9 @@ hugo_path: docs/reference/cc-metric-collector/_index.md

 # cc-metric-collector

-A node agent for measuring, processing and forwarding node level metrics. It is part of the [ClusterCockpit ecosystem](https://clustercockpit.org/docs/overview/).
+A node agent for measuring, processing and forwarding node level metrics. It is part of the [ClusterCockpit ecosystem](https://clustercockpit.org/docs/overview/). 

-The metric collector sends (and receives) metric in the [InfluxDB line protocol](https://docs.influxdata.com/influxdb/cloud/reference/syntax/line-protocol/) as it provides flexibility while providing a separation between tags (like index columns in relational databases) and fields (like data columns).
-
-There is a single timer loop that triggers all collectors serially, collects the collectors' data and sends the metrics to the sink. This is done as all data is submitted with a single time stamp. The sinks currently use mostly blocking APIs.
-
-The receiver runs as a go routine side-by-side with the timer loop and asynchronously forwards received metrics to the sink.
+The `cc-metric-collector` sends (and maybe receives) metrics in the [InfluxDB line protocol](https://docs.influxdata.com/influxdb/cloud/reference/syntax/line-protocol/) as it provides flexibility while providing a separation between tags (like index columns in relational databases) and fields (like data columns). The `cc-metric-collector` consists of 4 components: collectors, router, sinks and receivers. The collectors read data from the current system and submit metrics to the router. The router can be configured to manipulate the metrics before forwarding them to the sinks. The receivers are also attached to the router like the collectors but they receive data from external source like other `cc-metric-collector` instances.


 [![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.7438287.svg)](https://doi.org/10.5281/zenodo.7438287)
@@ -43,7 +39,7 @@ There is a main configuration file with basic settings that point to the other c
 }
 ```

-The `interval` defines how often the metrics should be read and send to the sink. The `duration` tells collectors how long one measurement has to take. This is important for some collectors, like the `likwid` collector. For more information, see [here](./docs/configuration.md).
+The `interval` defines how often the metrics should be read and send to the sink(s). The `duration` tells the collectors how long one measurement has to take. This is important for some collectors, like the `likwid` collector. For more information, see [here](./docs/configuration.md).

 See the component READMEs for their configuration:

@@ -57,7 +53,7 @@ See the component READMEs for their configuration:
 ```
 $ git clone git@github.com:ClusterCockpit/cc-metric-collector.git
 $ make (downloads LIKWID, builds it as static library with 'direct' accessmode and copies all required files for the collector)
-$ go get (requires at least golang 1.16)
+$ go get
 $ make
 ```

@@ -67,11 +63,13 @@ For more information, see [here](./docs/building.md).

 ```
 $ ./cc-metric-collector --help
-Usage of metric-collector:
+Usage of ./cc-metric-collector:
  -config string
    	Path to configuration file (default "./config.json")
  -log string
    	Path for logfile (default "stderr")
+  -loglevel string
+    	Set log level (default "info")
  -once
    	Run all collectors only once
 ```
@@ -114,7 +112,7 @@ flowchart TD

 # Contributing

-The ClusterCockpit ecosystem is designed to be used by different HPC computing centers. Since configurations and setups differ between the centers, the centers likely have to put some work into the cc-metric-collector to gather all desired metrics.
+The ClusterCockpit ecosystem is designed to be used by different HPC computing centers. Since configurations and setups differ between the centers, the centers likely have to put some work into `cc-metric-collector` to gather all desired metrics.

 You are free to open an issue to request a collector but we would also be happy about PRs.

--- a/cc-metric-collector.go
+++ b/cc-metric-collector.go
@@ -8,6 +8,7 @@
 package main

 import (
+	"bytes"
 	"encoding/json"
 	"flag"
 	"os"
@@ -48,22 +49,22 @@ type RuntimeConfig struct {
 	Sync     sync.WaitGroup
 }

+// ReadCli reads the command line arguments
 func ReadCli() map[string]string {
-	var m map[string]string
 	cfg := flag.String("config", "./config.json", "Path to configuration file")
 	logfile := flag.String("log", "stderr", "Path for logfile")
 	once := flag.Bool("once", false, "Run all collectors only once")
 	loglevel := flag.String("loglevel", "info", "Set log level")
 	flag.Parse()
-	m = make(map[string]string)
-	m["configfile"] = *cfg
-	m["logfile"] = *logfile
+	m := map[string]string{
+		"configfile": *cfg,
+		"logfile":    *logfile,
+		"once":       "false",
+		"loglevel":   *loglevel,
+	}
 	if *once {
 		m["once"] = "true"
-	} else {
-		m["once"] = "false"
 	}
-	m["loglevel"] = *loglevel
 	return m
 }

@@ -120,9 +121,10 @@ func mainFunc() int {

 	// Load and check configuration
 	main := ccconf.GetPackageConfig("main")
-	err = json.Unmarshal(main, &rcfg.ConfigFile)
-	if err != nil {
-		cclog.Error("Error reading configuration file ", rcfg.CliArgs["configfile"], ": ", err.Error())
+	d := json.NewDecoder(bytes.NewReader(main))
+	d.DisallowUnknownFields()
+	if err := d.Decode(&rcfg.ConfigFile); err != nil {
+		cclog.Errorf("Error reading configuration file %s: %v", rcfg.CliArgs["configfile"], err)
 		return 1
 	}

--- a/collectors/README.md
+++ b/collectors/README.md
@@ -59,6 +59,7 @@ In contrast to the configuration files for sinks and receivers, the collectors c
 * [ ] Aggreate metrics to higher topology entity (sum hwthread metrics to socket metric, ...). Needs to be configurable

 # Contributing own collectors
+
 A collector reads data from any source, parses it to metrics and submits these metrics to the `metric-collector`. A collector provides three function:

 * `Name() string`: Return the name of the collector
@@ -104,8 +105,10 @@ func (m *SampleCollector) Init(config json.RawMessage) error {
        return fmt.Errorf("%s Init(): setup() call failed: %w", m.name, err)
    }
    if len(config) > 0 {
-        if err := json.Unmarshal(config, &m.config); err != nil {
-            return fmt.Errorf("%s Init(): json.Unmarshal() call failed: %w", m.name, err)
+        d := json.NewDecoder(bytes.NewReader(config))
+        d.DisallowUnknownFields()
+        if err := d.Decode(&m.config); err != nil {
+            return fmt.Errorf("%s Init(): Error decoding JSON config: %w", m.name, err)
        }
    }
    m.meta = map[string]string{"source": m.name, "group": "Sample"}
--- a/collectors/beegfsmetaMetric.go
+++ b/collectors/beegfsmetaMetric.go
@@ -30,9 +30,9 @@ const DEFAULT_BEEGFS_CMD = "beegfs-ctl"

 // Struct for the collector-specific JSON config
 type BeegfsMetaCollectorConfig struct {
-	Beegfs            string   `json:"beegfs_path"`
-	ExcludeMetrics    []string `json:"exclude_metrics,omitempty"`
-	ExcludeFilesystem []string `json:"exclude_filesystem"`
+	Beegfs             string   `json:"beegfs_path"`
+	ExcludeMetrics     []string `json:"exclude_metrics,omitempty"`
+	ExcludeFilesystems []string `json:"exclude_filesystem"`
 }

 type BeegfsMetaCollector struct {
@@ -74,9 +74,10 @@ func (m *BeegfsMetaCollector) Init(config json.RawMessage) error {

 	// Read JSON configuration
 	if len(config) > 0 {
-		err := json.Unmarshal(config, &m.config)
-		if err != nil {
-			return err
+		d := json.NewDecoder(bytes.NewReader(config))
+		d.DisallowUnknownFields()
+		if err := d.Decode(&m.config); err != nil {
+			return fmt.Errorf("%s Init(): Failed to decode JSON config: %w", m.name, err)
 		}
 	}

@@ -99,23 +100,23 @@ func (m *BeegfsMetaCollector) Init(config json.RawMessage) error {
 		"filesystem": "",
 	}
 	m.skipFS = make(map[string]struct{})
-	for _, fs := range m.config.ExcludeFilesystem {
+	for _, fs := range m.config.ExcludeFilesystems {
 		m.skipFS[fs] = struct{}{}
 	}

 	// Beegfs file system statistics can only be queried by user root
 	user, err := user.Current()
 	if err != nil {
-		return fmt.Errorf("BeegfsMetaCollector.Init(): Failed to get current user: %w", err)
+		return fmt.Errorf("%s Init(): Failed to get current user: %w", m.name, err)
 	}
 	if user.Uid != "0" {
-		return fmt.Errorf("BeegfsMetaCollector.Init(): BeeGFS file system statistics can only be queried by user root")
+		return fmt.Errorf("%s Init(): BeeGFS file system statistics can only be queried by user root", m.name)
 	}

 	// Check if beegfs-ctl is in executable search path
 	_, err = exec.LookPath(m.config.Beegfs)
 	if err != nil {
-		return fmt.Errorf("BeegfsMetaCollector.Init(): Failed to find beegfs-ctl binary '%s': %w", m.config.Beegfs, err)
+		return fmt.Errorf("%s Init(): Failed to find beegfs-ctl binary '%s': %w", m.name, m.config.Beegfs, err)
 	}
 	m.init = true
 	return nil
@@ -226,8 +227,7 @@ func (m *BeegfsMetaCollector) Read(interval time.Duration, output chan lp.CCMess

 			for key, data := range m.matches {
 				value, _ := strconv.ParseFloat(data, 32)
-				y, err := lp.NewMessage(key, m.tags, m.meta, map[string]any{"value": value}, time.Now())
-				if err == nil {
+				if y, err := lp.NewMetric(key, m.tags, m.meta, value, time.Now()); err == nil {
 					output <- y
 				}
 			}
--- a/collectors/beegfsstorageMetric.go
+++ b/collectors/beegfsstorageMetric.go
@@ -28,9 +28,9 @@ import (

 // Struct for the collector-specific JSON config
 type BeegfsStorageCollectorConfig struct {
-	Beegfs            string   `json:"beegfs_path"`
-	ExcludeMetrics    []string `json:"exclude_metrics,omitempty"`
-	ExcludeFilesystem []string `json:"exclude_filesystem"`
+	Beegfs             string   `json:"beegfs_path"`
+	ExcludeMetrics     []string `json:"exclude_metrics,omitempty"`
+	ExcludeFilesystems []string `json:"exclude_filesystem"`
 }

 type BeegfsStorageCollector struct {
@@ -67,9 +67,10 @@ func (m *BeegfsStorageCollector) Init(config json.RawMessage) error {

 	// Read JSON configuration
 	if len(config) > 0 {
-		err := json.Unmarshal(config, &m.config)
-		if err != nil {
-			return err
+		d := json.NewDecoder(bytes.NewReader(config))
+		d.DisallowUnknownFields()
+		if err := d.Decode(&m.config); err != nil {
+			return fmt.Errorf("%s Init(): failed to decode JSON config: %w", m.name, err)
 		}
 	}

@@ -92,23 +93,23 @@ func (m *BeegfsStorageCollector) Init(config json.RawMessage) error {
 		"filesystem": "",
 	}
 	m.skipFS = make(map[string]struct{})
-	for _, fs := range m.config.ExcludeFilesystem {
+	for _, fs := range m.config.ExcludeFilesystems {
 		m.skipFS[fs] = struct{}{}
 	}

 	// Beegfs file system statistics can only be queried by user root
 	user, err := user.Current()
 	if err != nil {
-		return fmt.Errorf("BeegfsStorageCollector.Init(): Failed to get current user: %w", err)
+		return fmt.Errorf("%s Init(): Failed to get current user: %w", m.name, err)
 	}
 	if user.Uid != "0" {
-		return fmt.Errorf("BeegfsStorageCollector.Init(): BeeGFS file system statistics can only be queried by user root")
+		return fmt.Errorf("%s Init(): BeeGFS file system statistics can only be queried by user root", m.name)
 	}

 	// Check if beegfs-ctl is in executable search path
 	_, err = exec.LookPath(m.config.Beegfs)
 	if err != nil {
-		return fmt.Errorf("BeegfsStorageCollector.Init(): Failed to find beegfs-ctl binary '%s': %w", m.config.Beegfs, err)
+		return fmt.Errorf("%s Init(): Failed to find beegfs-ctl binary '%s': %w", m.name, m.config.Beegfs, err)
 	}
 	m.init = true
 	return nil
@@ -217,8 +218,7 @@ func (m *BeegfsStorageCollector) Read(interval time.Duration, output chan lp.CCM

 			for key, data := range m.matches {
 				value, _ := strconv.ParseFloat(data, 32)
-				y, err := lp.NewMessage(key, m.tags, m.meta, map[string]any{"value": value}, time.Now())
-				if err == nil {
+				if y, err := lp.NewMetric(key, m.tags, m.meta, value, time.Now()); err == nil {
 					output <- y
 				}
 			}
--- a/collectors/beegfsstorageMetric.md
+++ b/collectors/beegfsstorageMetric.md
@@ -14,14 +14,14 @@ This Collector is to collect BeeGFS on Demand (BeeOND) storage stats.

 ```json
  "beegfs_storage": {
-	"beegfs_path": "/usr/bin/beegfs-ctl",
+    "beegfs_path": "/usr/bin/beegfs-ctl",
    "exclude_filesystem": [
      "/mnt/ignore_me"
    ],
    "exclude_metrics": [     
-          "ack",
-		  "storInf",
-		  "unlnk"
+      "ack",
+      "storInf",
+      "unlnk"
    ]
  }
 ```
--- a/collectors/collectorManager.go
+++ b/collectors/collectorManager.go
@@ -8,6 +8,7 @@
 package collectors

 import (
+	"bytes"
 	"encoding/json"
 	"fmt"
 	"sync"
@@ -48,6 +49,7 @@ var AvailableCollectors = map[string]MetricCollector{
 	"schedstat":       new(SchedstatCollector),
 	"nfsiostat":       new(NfsIOStatCollector),
 	"slurm_cgroup":    new(SlurmCgroupCollector),
+	"smartmon":        new(SmartMonCollector),
 }

 // Metric collector manager data structure
@@ -88,10 +90,10 @@ func (cm *collectorManager) Init(ticker mct.MultiChanTicker, duration time.Durat
 	cm.ticker = ticker
 	cm.duration = duration

-	err := json.Unmarshal(collectConfig, &cm.config)
-	if err != nil {
-		cclog.Error(err.Error())
-		return err
+	d := json.NewDecoder(bytes.NewReader(collectConfig))
+	d.DisallowUnknownFields()
+	if err := d.Decode(&cm.config); err != nil {
+		return fmt.Errorf("%s Init(): Error decoding collector manager config: %w", "CollectorManager", err)
 	}

 	// Initialize configured collectors
@@ -102,7 +104,7 @@ func (cm *collectorManager) Init(ticker mct.MultiChanTicker, duration time.Durat
 		}
 		collector := AvailableCollectors[collectorName]

-		err = collector.Init(collectorCfg)
+		err := collector.Init(collectorCfg)
 		if err != nil {
 			cclog.ComponentError("CollectorManager", fmt.Sprintf("Collector %s initialization failed: %v", collectorName, err))
 			continue
--- a/collectors/cpufreqCpuinfoMetric.go
+++ b/collectors/cpufreqCpuinfoMetric.go
@@ -171,7 +171,7 @@ func (m *CPUFreqCpuInfoCollector) Read(interval time.Duration, output chan lp.CC
 							fmt.Sprintf("Read(): Failed to convert cpu MHz '%s' to float64: %v", lineSplit[1], err))
 						return
 					}
-					if y, err := lp.NewMessage("cpufreq", t.tagSet, m.meta, map[string]any{"value": value}, now); err == nil {
+					if y, err := lp.NewMetric("cpufreq", t.tagSet, m.meta, value, now); err == nil {
 						output <- y
 					}
 				}
--- a/collectors/cpufreqCpuinfoMetric.md
+++ b/collectors/cpufreqCpuinfoMetric.md
@@ -12,7 +12,9 @@ hugo_path: docs/reference/cc-metric-collector/collectors/cpufreq_cpuinfo.md
 ## `cpufreq_cpuinfo` collector

 ```json
-  "cpufreq_cpuinfo": {}
+  "cpufreq_cpuinfo": {
+    "exclude_metrics": []
+  }
 ```

 The `cpufreq_cpuinfo` collector reads the clock frequency from `/proc/cpuinfo` and outputs a handful **hwthread** metrics.
--- a/collectors/cpufreqMetric.go
+++ b/collectors/cpufreqMetric.go
@@ -8,6 +8,7 @@
 package collectors

 import (
+	"bytes"
 	"encoding/json"
 	"fmt"
 	"os"
@@ -54,9 +55,10 @@ func (m *CPUFreqCollector) Init(config json.RawMessage) error {
 	}
 	m.parallel = true
 	if len(config) > 0 {
-		err := json.Unmarshal(config, &m.config)
-		if err != nil {
-			return err
+		d := json.NewDecoder(bytes.NewReader(config))
+		d.DisallowUnknownFields()
+		if err := d.Decode(&m.config); err != nil {
+			return fmt.Errorf("%s Init(): failed to decode JSON config: %w", m.name, err)
 		}
 	}
 	m.meta = map[string]string{
@@ -77,7 +79,7 @@ func (m *CPUFreqCollector) Init(config json.RawMessage) error {
 		scalingCurFreqFile := filepath.Join("/sys/devices/system/cpu", fmt.Sprintf("cpu%d", c.CpuID), "cpufreq/scaling_cur_freq")
 		err := unix.Access(scalingCurFreqFile, unix.R_OK)
 		if err != nil {
-			return fmt.Errorf("unable to access file '%s': %w", scalingCurFreqFile, err)
+			return fmt.Errorf("%s Init(): unable to access file '%s': %w", m.name, scalingCurFreqFile, err)
 		}

 		m.topology = append(m.topology,
@@ -127,7 +129,7 @@ func (m *CPUFreqCollector) Read(interval time.Duration, output chan lp.CCMessage
 			continue
 		}

-		if y, err := lp.NewMessage("cpufreq", t.tagSet, m.meta, map[string]any{"value": cpuFreq}, now); err == nil {
+		if y, err := lp.NewMetric("cpufreq", t.tagSet, m.meta, cpuFreq, now); err == nil {
 			output <- y
 		}
 	}
--- a/collectors/cpustatMetric.go
+++ b/collectors/cpustatMetric.go
@@ -9,6 +9,7 @@ package collectors

 import (
 	"bufio"
+	"bytes"
 	"encoding/json"
 	"fmt"
 	"os"
@@ -26,6 +27,7 @@ const CPUSTATFILE = `/proc/stat`

 type CpustatCollectorConfig struct {
 	ExcludeMetrics []string `json:"exclude_metrics,omitempty"`
+	excludeNumCPUs bool
 }

 type CpustatCollector struct {
@@ -53,9 +55,10 @@ func (m *CpustatCollector) Init(config json.RawMessage) error {
 		"type": "node",
 	}
 	if len(config) > 0 {
-		err := json.Unmarshal(config, &m.config)
-		if err != nil {
-			return err
+		d := json.NewDecoder(bytes.NewReader(config))
+		d.DisallowUnknownFields()
+		if err := d.Decode(&m.config); err != nil {
+			return fmt.Errorf("%s Init(): Error decoding JSON config: %w", m.name, err)
 		}
 	}
 	matches := map[string]int{
@@ -77,21 +80,13 @@ func (m *CpustatCollector) Init(config json.RawMessage) error {
 			m.matches[match] = index
 		}
 	}
+	m.config.excludeNumCPUs = slices.Contains(m.config.ExcludeMetrics, "num_cpus")

 	// Check input file
-	file, err := os.Open(string(CPUSTATFILE))
+	file, err := os.Open(CPUSTATFILE)
 	if err != nil {
-		cclog.ComponentError(
-			m.name,
-			fmt.Sprintf("Init(): Failed to open file '%s': %v", string(CPUSTATFILE), err))
+		return fmt.Errorf("%s Init(): Failed to open file '%s': %w", m.name, CPUSTATFILE, err)
 	}
-	defer func() {
-		if err := file.Close(); err != nil {
-			cclog.ComponentError(
-				m.name,
-				fmt.Sprintf("Init(): Failed to close file '%s': %v", string(CPUSTATFILE), err))
-		}
-	}()

 	// Pre-generate tags for all CPUs
 	num_cpus := 0
@@ -102,11 +97,13 @@ func (m *CpustatCollector) Init(config json.RawMessage) error {
 		line := scanner.Text()
 		linefields := strings.Fields(line)
 		if strings.Compare(linefields[0], "cpu") == 0 {
+			// Kernel system statistics for all CPUs
 			m.olddata["cpu"] = make(map[string]int64)
 			for k, v := range m.matches {
 				m.olddata["cpu"][k], _ = strconv.ParseInt(linefields[v], 0, 64)
 			}
 		} else if strings.HasPrefix(linefields[0], "cpu") && strings.Compare(linefields[0], "cpu") != 0 {
+			// Kernel system statistics per CPU
 			cpustr := strings.TrimLeft(linefields[0], "cpu")
 			cpu, _ := strconv.Atoi(cpustr)
 			m.cputags[linefields[0]] = map[string]string{
@@ -120,6 +117,12 @@ func (m *CpustatCollector) Init(config json.RawMessage) error {
 			num_cpus++
 		}
 	}
+
+	// Close file
+	if err := file.Close(); err != nil {
+		return fmt.Errorf("%s Init(): Failed to close file '%s': %w", m.name, CPUSTATFILE, err)
+	}
+
 	m.lastTimestamp = time.Now()
 	m.init = true
 	return nil
@@ -142,7 +145,7 @@ func (m *CpustatCollector) parseStatLine(linefields []string, tags map[string]st
 	sum := float64(0)
 	for name, value := range values {
 		sum += value
-		y, err := lp.NewMessage(name, tags, m.meta, map[string]any{"value": value * 100}, now)
+		y, err := lp.NewMetric(name, tags, m.meta, value*100, now)
 		if err == nil {
 			y.AddTag("unit", "Percent")
 			output <- y
@@ -150,7 +153,7 @@ func (m *CpustatCollector) parseStatLine(linefields []string, tags map[string]st
 	}
 	if v, ok := values["cpu_idle"]; ok {
 		sum -= v
-		y, err := lp.NewMessage("cpu_used", tags, m.meta, map[string]any{"value": sum * 100}, now)
+		y, err := lp.NewMetric("cpu_used", tags, m.meta, sum*100, now)
 		if err == nil {
 			y.AddTag("unit", "Percent")
 			output <- y
@@ -166,11 +169,11 @@ func (m *CpustatCollector) Read(interval time.Duration, output chan lp.CCMessage
 	now := time.Now()
 	tsdelta := now.Sub(m.lastTimestamp)

-	file, err := os.Open(string(CPUSTATFILE))
+	file, err := os.Open(CPUSTATFILE)
 	if err != nil {
 		cclog.ComponentError(
 			m.name,
-			fmt.Sprintf("Read(): Failed to open file '%s': %v", string(CPUSTATFILE), err))
+			fmt.Sprintf("Read(): Failed to open file '%s': %v", CPUSTATFILE, err))
 	}
 	defer func() {
 		if err := file.Close(); err != nil {
@@ -192,14 +195,10 @@ func (m *CpustatCollector) Read(interval time.Duration, output chan lp.CCMessage
 		}
 	}

-	num_cpus_metric, err := lp.NewMessage("num_cpus",
-		m.nodetags,
-		m.meta,
-		map[string]any{"value": num_cpus},
-		now,
-	)
-	if err == nil {
-		output <- num_cpus_metric
+	if !m.config.excludeNumCPUs {
+		if num_cpus_metric, err := lp.NewMetric("num_cpus", m.nodetags, m.meta, num_cpus, now); err == nil {
+			output <- num_cpus_metric
+		}
 	}

 	m.lastTimestamp = now
--- a/collectors/customCmdMetric.go
+++ b/collectors/customCmdMetric.go
@@ -8,8 +8,8 @@
 package collectors

 import (
+	"bytes"
 	"encoding/json"
-	"errors"
 	"fmt"
 	"os"
 	"os/exec"
@@ -47,8 +47,10 @@ func (m *CustomCmdCollector) Init(config json.RawMessage) error {

 	// Read configuration
 	if len(config) > 0 {
-		if err := json.Unmarshal(config, &m.config); err != nil {
-			return fmt.Errorf("%s Init(): json.Unmarshal() call failed: %w", m.name, err)
+		d := json.NewDecoder(bytes.NewReader(config))
+		d.DisallowUnknownFields()
+		if err := d.Decode(&m.config); err != nil {
+			return fmt.Errorf("%s Init(): Error decoding JSON config: %w", m.name, err)
 		}
 	}

@@ -82,7 +84,7 @@ func (m *CustomCmdCollector) Init(config json.RawMessage) error {
 	}

 	if len(m.files) == 0 && len(m.cmdFieldsSlice) == 0 {
-		return errors.New("no metrics to collect")
+		return fmt.Errorf("%s Init(): no metrics to collect", m.name)
 	}
 	m.init = true
 	return nil
--- a/collectors/diskstatMetric.go
+++ b/collectors/diskstatMetric.go
@@ -9,6 +9,7 @@ package collectors

 import (
 	"bufio"
+	"bytes"
 	"encoding/json"
 	"fmt"
 	"os"
@@ -42,8 +43,10 @@ func (m *DiskstatCollector) Init(config json.RawMessage) error {
 		return fmt.Errorf("%s Init(): setup() call failed: %w", m.name, err)
 	}
 	if len(config) > 0 {
-		if err := json.Unmarshal(config, &m.config); err != nil {
-			return err
+		d := json.NewDecoder(bytes.NewReader(config))
+		d.DisallowUnknownFields()
+		if err := d.Decode(&m.config); err != nil {
+			return fmt.Errorf("%s Init(): Error decoding JSON config: %w", m.name, err)
 		}
 	}
 	m.allowedMetrics = map[string]bool{
@@ -125,30 +128,14 @@ mountLoop:
 		tags := map[string]string{"type": "node", "device": linefields[0]}
 		total := (stat.Blocks * uint64(stat.Bsize)) / uint64(1000_000_000)
 		if m.allowedMetrics["disk_total"] {
-			y, err := lp.NewMessage(
-				"disk_total",
-				tags,
-				m.meta,
-				map[string]any{
-					"value": total,
-				},
-				time.Now())
-			if err == nil {
+			if y, err := lp.NewMetric("disk_total", tags, m.meta, total, time.Now()); err == nil {
 				y.AddMeta("unit", "GBytes")
 				output <- y
 			}
 		}
 		free := (stat.Bfree * uint64(stat.Bsize)) / uint64(1000_000_000)
 		if m.allowedMetrics["disk_free"] {
-			y, err := lp.NewMessage(
-				"disk_free",
-				tags,
-				m.meta,
-				map[string]any{
-					"value": free,
-				},
-				time.Now())
-			if err == nil {
+			if y, err := lp.NewMetric("disk_free", tags, m.meta, free, time.Now()); err == nil {
 				y.AddMeta("unit", "GBytes")
 				output <- y
 			}
@@ -161,16 +148,7 @@ mountLoop:
 		}
 	}
 	if m.allowedMetrics["part_max_used"] {
-		y, err := lp.NewMessage(
-			"part_max_used",
-			map[string]string{
-				"type": "node",
-			},
-			m.meta,
-			map[string]any{
-				"value": int(part_max_used),
-			},
-			time.Now())
+		y, err := lp.NewMetric("part_max_used", map[string]string{"type": "node"}, m.meta, int(part_max_used), time.Now())
 		if err == nil {
 			y.AddMeta("unit", "percent")
 			output <- y
--- a/collectors/gpfsMetric.go
+++ b/collectors/gpfsMetric.go
@@ -32,7 +32,7 @@ type GpfsCollectorState map[string]int64

 type GpfsCollectorConfig struct {
 	Mmpmon             string   `json:"mmpmon_path,omitempty"`
-	ExcludeFilesystem  []string `json:"exclude_filesystem,omitempty"`
+	ExcludeFilesystems []string `json:"exclude_filesystem,omitempty"`
 	ExcludeMetrics     []string `json:"exclude_metrics,omitempty"`
 	Sudo               bool     `json:"use_sudo,omitempty"`
 	SendAbsoluteValues bool     `json:"send_abs_values,omitempty"`
@@ -322,9 +322,10 @@ func (m *GpfsCollector) Init(config json.RawMessage) error {

 	// Read JSON configuration
 	if len(config) > 0 {
-		err := json.Unmarshal(config, &m.config)
-		if err != nil {
-			return fmt.Errorf("%s Init(): failed to unmarshal JSON config: %w", m.name, err)
+		d := json.NewDecoder(bytes.NewReader(config))
+		d.DisallowUnknownFields()
+		if err := d.Decode(&m.config); err != nil {
+			return fmt.Errorf("%s Init(): failed to decode JSON config: %w", m.name, err)
 		}
 	}
 	m.meta = map[string]string{
@@ -336,7 +337,7 @@ func (m *GpfsCollector) Init(config json.RawMessage) error {
 		"filesystem": "",
 	}
 	m.skipFS = make(map[string]struct{})
-	for _, fs := range m.config.ExcludeFilesystem {
+	for _, fs := range m.config.ExcludeFilesystems {
 		m.skipFS[fs] = struct{}{}
 	}
 	m.lastState = make(map[string]GpfsCollectorState)
@@ -346,18 +347,15 @@ func (m *GpfsCollector) Init(config json.RawMessage) error {
 	if !m.config.Sudo {
 		user, err := user.Current()
 		if err != nil {
-			cclog.ComponentError(m.name, "Failed to get current user:", err.Error())
-			return err
+			return fmt.Errorf("%s Init(): failed to get current user: %w", m.name, err)
 		}
 		if user.Uid != "0" {
-			cclog.ComponentError(m.name, "GPFS file system statistics can only be queried by user root")
-			return err
+			return fmt.Errorf("%s Init(): GPFS file system statistics can only be queried by user root", m.name)
 		}
 	} else {
 		p, err := exec.LookPath("sudo")
 		if err != nil {
-			cclog.ComponentError(m.name, "Cannot find 'sudo'")
-			return err
+			return fmt.Errorf("%s Init(): cannot find 'sudo': %w", m.name, err)
 		}
 		m.sudoCmd = p
 	}
@@ -377,7 +375,6 @@ func (m *GpfsCollector) Init(config json.RawMessage) error {
 			// the file was given in the config, use it
 			p = m.config.Mmpmon
 		} else {
-			cclog.ComponentError(m.name, fmt.Sprintf("failed to find mmpmon binary '%s': %v", m.config.Mmpmon, err))
 			return fmt.Errorf("%s Init(): failed to find mmpmon binary '%s': %w", m.name, m.config.Mmpmon, err)
 		}
 	}
@@ -434,7 +431,7 @@ func (m *GpfsCollector) Init(config json.RawMessage) error {
 		}
 	}
 	if len(m.definitions) == 0 {
-		return errors.New("no metrics to collect")
+		return fmt.Errorf("%s Init(): no metrics to collect", m.name)
 	}

 	m.init = true
--- a/collectors/gpfsMetric.md
+++ b/collectors/gpfsMetric.md
@@ -14,7 +14,7 @@ hugo_path: docs/reference/cc-metric-collector/collectors/gpfs.md
 ```json
  "gpfs": {
    "mmpmon_path": "/path/to/mmpmon",
-    "use_sudo": "true",
+    "use_sudo": true,
    "exclude_filesystem": [
      "fs1"
    ],
@@ -81,3 +81,16 @@ Metrics:
 * `gpfs_metaops_rate` (if `send_total_values == true` and `send_derived_values == true`)

 The collector adds a `filesystem` tag to all metrics
+
+`mmpmon` typically require root to run.
+In order to run `cc-metric-collector` without root priviliges, you can enable `use_sudo`.
+Add a file like this in `/etc/sudoers.d/` to allow `cc-metric-collector` to run the required command:
+
+```
+# Do not log the following sudo commands from monitoring, since this causes a lot of log spam.
+# However keep log_denied enabled, to detect failures
+Defaults: monitoring !log_allowed, !pam_session
+
+# Allow to use mmpmon
+monitoring ALL = (root) NOPASSWD:/absolute/path/to/mmpmon -p -s
+```
--- a/collectors/infinibandMetric.go
+++ b/collectors/infinibandMetric.go
@@ -8,6 +8,7 @@
 package collectors

 import (
+	"bytes"
 	"encoding/json"
 	"fmt"
 	"os"
@@ -31,7 +32,6 @@ type InfinibandCollectorMetric struct {
 	scale            int64
 	addToIBTotal     bool
 	addToIBTotalPkgs bool
-	currentState     int64
 	lastState        int64
 }

@@ -79,9 +79,10 @@ func (m *InfinibandCollector) Init(config json.RawMessage) error {
 	m.config.SendDerivedValues = false
 	// Read configuration file, allow overwriting default config
 	if len(config) > 0 {
-		err = json.Unmarshal(config, &m.config)
-		if err != nil {
-			return err
+		d := json.NewDecoder(bytes.NewReader(config))
+		d.DisallowUnknownFields()
+		if err := d.Decode(&m.config); err != nil {
+			return fmt.Errorf("%s Init(): failed to decode JSON config: %w", m.name, err)
 		}
 	}

@@ -200,7 +201,9 @@ func (m *InfinibandCollector) Read(interval time.Duration, output chan lp.CCMess
 	for i := range m.info {
 		info := &m.info[i]

-		var ib_total, ib_total_pkts int64
+		var ib_total, ib_total_last_state,
+			ib_total_pkts, ib_total_pkts_last_state int64
+		var ib_total_last_state_available, ib_total_pkts_last_state_available bool
 		for i := range info.portCounterFiles {
 			counterDef := &info.portCounterFiles[i]

@@ -225,19 +228,9 @@ func (m *InfinibandCollector) Read(interval time.Duration, output chan lp.CCMess
 			// Scale raw value
 			v *= counterDef.scale

-			// Save current state
-			counterDef.currentState = v
-
 			// Send absolut values
 			if m.config.SendAbsoluteValues {
-				if y, err := lp.NewMessage(
-					counterDef.name,
-					info.tagSet,
-					m.meta,
-					map[string]any{
-						"value": counterDef.currentState,
-					},
-					now); err == nil {
+				if y, err := lp.NewMetric(counterDef.name, info.tagSet, m.meta, v, now); err == nil {
 					y.AddMeta("unit", counterDef.unit)
 					output <- y
 				}
@@ -246,59 +239,65 @@ func (m *InfinibandCollector) Read(interval time.Duration, output chan lp.CCMess
 			// Send derived values
 			if m.config.SendDerivedValues {
 				if counterDef.lastState >= 0 {
-					rate := float64((counterDef.currentState - counterDef.lastState)) / timeDiff
-					if y, err := lp.NewMessage(
-						counterDef.name+"_bw",
-						info.tagSet,
-						m.meta,
-						map[string]any{
-							"value": rate,
-						},
-						now); err == nil {
+					rate := float64((v - counterDef.lastState)) / timeDiff
+					if y, err := lp.NewMetric(counterDef.name+"_bw", info.tagSet, m.meta, rate, now); err == nil {
 						y.AddMeta("unit", counterDef.unit+"/sec")
 						output <- y
+					}

+					// Sum up total values of last state
+					if m.config.SendTotalValues {
+						switch {
+						case counterDef.addToIBTotal:
+							ib_total_last_state += counterDef.lastState
+							ib_total_last_state_available = true
+						case counterDef.addToIBTotalPkgs:
+							ib_total_pkts_last_state += counterDef.lastState
+							ib_total_pkts_last_state_available = true
+						}
 					}
 				}
-				counterDef.lastState = counterDef.currentState
+				counterDef.lastState = v
 			}

 			// Sum up total values
 			if m.config.SendTotalValues {
 				switch {
 				case counterDef.addToIBTotal:
-					ib_total += counterDef.currentState
+					ib_total += v
 				case counterDef.addToIBTotalPkgs:
-					ib_total_pkts += counterDef.currentState
+					ib_total_pkts += v
 				}
 			}
 		}

 		// Send total values
 		if m.config.SendTotalValues {
-			if y, err := lp.NewMessage(
-				"ib_total",
-				info.tagSet,
-				m.meta,
-				map[string]any{
-					"value": ib_total,
-				},
-				now); err == nil {
+			if y, err := lp.NewMetric("ib_total", info.tagSet, m.meta, ib_total, now); err == nil {
 				y.AddMeta("unit", "bytes")
 				output <- y
 			}

-			if y, err := lp.NewMessage(
-				"ib_total_pkts",
-				info.tagSet,
-				m.meta,
-				map[string]any{
-					"value": ib_total_pkts,
-				},
-				now); err == nil {
+			if y, err := lp.NewMetric("ib_total_pkts", info.tagSet, m.meta, ib_total_pkts, now); err == nil {
 				y.AddMeta("unit", "packets")
 				output <- y
 			}
+
+			if m.config.SendDerivedValues && ib_total_last_state_available {
+				rate := float64((ib_total - ib_total_last_state)) / timeDiff
+				if y, err := lp.NewMetric("ib_total_bw", info.tagSet, m.meta, rate, now); err == nil {
+					y.AddMeta("unit", "bytes/sec")
+					output <- y
+				}
+			}
+
+			if m.config.SendDerivedValues && ib_total_pkts_last_state_available {
+				rate := float64((ib_total_pkts - ib_total_pkts_last_state)) / timeDiff
+				if y, err := lp.NewMetric("ib_total_pkts_bw", info.tagSet, m.meta, rate, now); err == nil {
+					y.AddMeta("unit", "packets/sec")
+					output <- y
+				}
+			}
 		}
 	}
 }
--- a/collectors/infinibandMetric.md
+++ b/collectors/infinibandMetric.md
@@ -41,5 +41,7 @@ Metrics:
 * `ib_xmit_bw` (if `send_derived_values == true`)
 * `ib_recv_pkts_bw` (if `send_derived_values == true`)
 * `ib_xmit_pkts_bw` (if `send_derived_values == true`)
+* `ib_total_bw` (if `send_total_values == true` and `send_derived_values == true`)
+* `ib_total_pkts_bw` (if `send_total_values == true` and `send_derived_values == true`)

 The collector adds a `device` tag to all metrics
--- a/collectors/iostatMetric.go
+++ b/collectors/iostatMetric.go
@@ -9,8 +9,8 @@ package collectors

 import (
 	"bufio"
+	"bytes"
 	"encoding/json"
-	"errors"
 	"fmt"
 	"os"
 	"slices"
@@ -44,7 +44,6 @@ type IOstatCollector struct {
 }

 func (m *IOstatCollector) Init(config json.RawMessage) error {
-	var err error
 	m.name = "IOstatCollector"
 	m.parallel = true
 	m.meta = map[string]string{"source": m.name, "group": "Disk"}
@@ -52,9 +51,10 @@ func (m *IOstatCollector) Init(config json.RawMessage) error {
 		return fmt.Errorf("%s Init(): setup() call failed: %w", m.name, err)
 	}
 	if len(config) > 0 {
-		err = json.Unmarshal(config, &m.config)
-		if err != nil {
-			return err
+		d := json.NewDecoder(bytes.NewReader(config))
+		d.DisallowUnknownFields()
+		if err := d.Decode(&m.config); err != nil {
+			return fmt.Errorf("%s Init(): Error decoding JSON config: %w", m.name, err)
 		}
 	}
 	// https://www.kernel.org/doc/html/latest/admin-guide/iostats.html
@@ -85,7 +85,7 @@ func (m *IOstatCollector) Init(config json.RawMessage) error {
 		}
 	}
 	if len(m.matches) == 0 {
-		return errors.New("no metrics to collect")
+		return fmt.Errorf("%s Init(): no metrics to collect", m.name)
 	}
 	file, err := os.Open(IOSTATFILE)
 	if err != nil {
@@ -135,7 +135,7 @@ func (m *IOstatCollector) Init(config json.RawMessage) error {
 	}

 	m.init = true
-	return err
+	return nil
 }

 func (m *IOstatCollector) Read(interval time.Duration, output chan lp.CCMessage) {
--- a/collectors/ipmiMetric.go
+++ b/collectors/ipmiMetric.go
@@ -11,7 +11,6 @@ import (
 	"bufio"
 	"bytes"
 	"encoding/json"
-	"errors"
 	"fmt"
 	"io"
 	"os/exec"
@@ -29,10 +28,11 @@ type IpmiCollector struct {
 	metricCollector

 	config struct {
-		ExcludeDevices  []string `json:"exclude_devices"`
-		IpmitoolPath    string   `json:"ipmitool_path"`
-		IpmisensorsPath string   `json:"ipmisensors_path"`
+		IpmitoolPath    string `json:"ipmitool_path"`
+		IpmisensorsPath string `json:"ipmisensors_path"`
+		Sudo            bool   `json:"use_sudo"`
 	}
+
 	ipmitool    string
 	ipmisensors string
 }
@@ -55,57 +55,75 @@ func (m *IpmiCollector) Init(config json.RawMessage) error {
 	// default path to IPMI tools
 	m.config.IpmitoolPath = "ipmitool"
 	m.config.IpmisensorsPath = "ipmi-sensors"
+
 	if len(config) > 0 {
-		err := json.Unmarshal(config, &m.config)
-		if err != nil {
-			return err
+		d := json.NewDecoder(bytes.NewReader(config))
+		d.DisallowUnknownFields()
+		if err := d.Decode(&m.config); err != nil {
+			return fmt.Errorf("%s Init(): Error decoding JSON config: %w", m.name, err)
 		}
 	}
-	// Check if executables ipmitool or ipmisensors are found
-	p, err := exec.LookPath(m.config.IpmitoolPath)
-	if err == nil {
-		command := exec.Command(p)
-		err := command.Run()
-		if err != nil {
-			cclog.ComponentError(m.name, fmt.Sprintf("Failed to execute %s: %v", p, err.Error()))
-			m.ipmitool = ""
-		} else {
-			m.ipmitool = p
-		}
-	}
-	p, err = exec.LookPath(m.config.IpmisensorsPath)
-	if err == nil {
-		command := exec.Command(p)
-		err := command.Run()
-		if err != nil {
-			cclog.ComponentError(m.name, fmt.Sprintf("Failed to execute %s: %v", p, err.Error()))
-			m.ipmisensors = ""
-		} else {
-			m.ipmisensors = p
-		}
-	}
-	if len(m.ipmitool) == 0 && len(m.ipmisensors) == 0 {
-		return errors.New("no usable IPMI reader found")
-	}

-	m.init = true
-	return nil
+	m.ipmitool = m.config.IpmitoolPath
+	m.ipmisensors = m.config.IpmisensorsPath
+
+	// Test if any of the supported backends work
+	var dummyChan chan lp.CCMessage
+	dummyConsumer := func() {
+		for range dummyChan {
+		}
+	}
+
+	// Test if ipmi-sensors works (preferred over ipmitool, because it's faster)
+	var ipmiSensorsErr error
+	if _, ipmiSensorsErr = exec.LookPath(m.ipmisensors); ipmiSensorsErr == nil {
+		dummyChan = make(chan lp.CCMessage)
+		go dummyConsumer()
+		ipmiSensorsErr = m.readIpmiSensors(dummyChan)
+		close(dummyChan)
+		if ipmiSensorsErr == nil {
+			cclog.ComponentDebugf(m.name, "Using ipmi-sensors for ipmistat collector")
+			m.init = true
+			return nil
+		}
+	}
+	cclog.ComponentDebugf(m.name, "Unable to use ipmi-sensors for ipmistat collector: %v", ipmiSensorsErr)
+	m.ipmisensors = ""
+
+	// Test if ipmitool works (may be very slow)
+	var ipmiToolErr error
+	if _, ipmiToolErr = exec.LookPath(m.ipmitool); ipmiToolErr == nil {
+		dummyChan = make(chan lp.CCMessage)
+		go dummyConsumer()
+		ipmiToolErr = m.readIpmiTool(dummyChan)
+		close(dummyChan)
+		if ipmiToolErr == nil {
+			cclog.ComponentDebugf(m.name, "Using ipmitool for ipmistat collector")
+			m.init = true
+			return nil
+		}
+	}
+	m.ipmitool = ""
+	cclog.ComponentDebugf(m.name, "Unable to use ipmitool for ipmistat collector: %v", ipmiToolErr)
+
+	return fmt.Errorf("unable to init neither ipmitool (%w) nor ipmi-sensors (%w)", ipmiToolErr, ipmiSensorsErr)
 }

-func (m *IpmiCollector) readIpmiTool(cmd string, output chan lp.CCMessage) {
+func (m *IpmiCollector) readIpmiTool(output chan lp.CCMessage) error {
 	// Setup ipmitool command
-	command := exec.Command(cmd, "sensor")
+	argv := make([]string, 0)
+	if m.config.Sudo {
+		argv = append(argv, "sudo", "-n")
+	}
+	argv = append(argv, m.ipmitool, "sensor")
+	command := exec.Command(argv[0], argv[1:]...)
 	stdout, _ := command.StdoutPipe()
 	errBuf := new(bytes.Buffer)
 	command.Stderr = errBuf

 	// start command
 	if err := command.Start(); err != nil {
-		cclog.ComponentError(
-			m.name,
-			fmt.Sprintf("readIpmiTool(): Failed to start command \"%s\": %v", command.String(), err),
-		)
-		return
+		return fmt.Errorf("failed to start command '%s': %w", command.String(), err)
 	}

 	// Read command output
@@ -115,86 +133,100 @@ func (m *IpmiCollector) readIpmiTool(cmd string, output chan lp.CCMessage) {
 		if len(lv) < 3 {
 			continue
 		}
-		v, err := strconv.ParseFloat(strings.TrimSpace(lv[1]), 64)
-		if err == nil {
-			name := strings.ToLower(strings.ReplaceAll(strings.TrimSpace(lv[0]), " ", "_"))
-			unit := strings.TrimSpace(lv[2])
-			switch unit {
-			case "Volts":
-				unit = "Volts"
-			case "degrees C":
-				unit = "degC"
-			case "degrees F":
-				unit = "degF"
-			case "Watts":
-				unit = "Watts"
-			}

-			y, err := lp.NewMessage(name, map[string]string{"type": "node"}, m.meta, map[string]any{"value": v}, time.Now())
-			if err == nil {
-				y.AddMeta("unit", unit)
-				output <- y
-			}
+		if strings.TrimSpace(lv[1]) == "0x0" || strings.TrimSpace(lv[1]) == "na" {
+			// Ignore known non-float values
+			continue
 		}
+
+		v, err := strconv.ParseFloat(strings.TrimSpace(lv[1]), 64)
+		if err != nil {
+			cclog.ComponentErrorf(m.name, "Failed to parse float '%s': %v", lv[1], err)
+			continue
+		}
+		name := strings.ToLower(strings.ReplaceAll(strings.TrimSpace(lv[0]), " ", "_"))
+		unit := strings.TrimSpace(lv[2])
+		switch unit {
+		case "Volts":
+			unit = "Volts"
+		case "degrees C":
+			unit = "degC"
+		case "degrees F":
+			unit = "degF"
+		case "Watts":
+			unit = "Watts"
+		}
+
+		y, err := lp.NewMetric(name, map[string]string{"type": "node"}, m.meta, v, time.Now())
+		if err != nil {
+			cclog.ComponentErrorf(m.name, "Failed to create message: %v", err)
+			continue
+		}
+		y.AddMeta("unit", unit)
+		output <- y
 	}

 	// Wait for command end
 	if err := command.Wait(); err != nil {
 		errMsg, _ := io.ReadAll(errBuf)
-		cclog.ComponentError(
-			m.name,
-			fmt.Sprintf("readIpmiTool(): Failed to wait for the end of command \"%s\": %v\n", command.String(), err),
-		)
-		cclog.ComponentError(m.name, fmt.Sprintf("readIpmiTool(): command stderr: \"%s\"\n", strings.TrimSpace(string(errMsg))))
-		return
+		return fmt.Errorf("failed to complete command '%s': %w (stderr: %s)", command.String(), err, strings.TrimSpace(string(errMsg)))
 	}
+
+	return nil
 }

-func (m *IpmiCollector) readIpmiSensors(cmd string, output chan lp.CCMessage) {
+func (m *IpmiCollector) readIpmiSensors(output chan lp.CCMessage) error {
 	// Setup ipmisensors command
-	command := exec.Command(cmd, "--comma-separated-output", "--sdr-cache-recreate")
+	argv := make([]string, 0)
+	if m.config.Sudo {
+		argv = append(argv, "sudo", "-n")
+	}
+	argv = append(argv, m.ipmisensors, "--comma-separated-output", "--sdr-cache-recreate")
+	command := exec.Command(argv[0], argv[1:]...)
 	stdout, _ := command.StdoutPipe()
 	errBuf := new(bytes.Buffer)
 	command.Stderr = errBuf

 	// start command
 	if err := command.Start(); err != nil {
-		cclog.ComponentError(
-			m.name,
-			fmt.Sprintf("readIpmiSensors(): Failed to start command \"%s\": %v", command.String(), err),
-		)
-		return
+		return fmt.Errorf("failed to start command '%s': %w", command.String(), err)
 	}

 	// Read command output
 	scanner := bufio.NewScanner(stdout)
 	for scanner.Scan() {
 		lv := strings.Split(scanner.Text(), ",")
-		if len(lv) > 3 {
-			v, err := strconv.ParseFloat(lv[3], 64)
-			if err == nil {
-				name := strings.ToLower(strings.ReplaceAll(lv[1], " ", "_"))
-				y, err := lp.NewMessage(name, map[string]string{"type": "node"}, m.meta, map[string]any{"value": v}, time.Now())
-				if err == nil {
-					if len(lv) > 4 {
-						y.AddMeta("unit", lv[4])
-					}
-					output <- y
-				}
-			}
+		if len(lv) <= 3 {
+			continue
 		}
+		if lv[3] == "N/A" || lv[3] == "Reading" {
+			// Ignore known non-float values
+			continue
+		}
+		v, err := strconv.ParseFloat(strings.TrimSpace(lv[3]), 64)
+		if err != nil {
+			cclog.ComponentErrorf(m.name, "Failed to parse float '%s': %v", lv[3], err)
+			continue
+		}
+		name := strings.ToLower(strings.ReplaceAll(lv[1], " ", "_"))
+		y, err := lp.NewMetric(name, map[string]string{"type": "node"}, m.meta, v, time.Now())
+		if err != nil {
+			cclog.ComponentErrorf(m.name, "Failed to create message: %v", err)
+			continue
+		}
+		if len(lv) > 4 {
+			y.AddMeta("unit", lv[4])
+		}
+		output <- y
 	}

 	// Wait for command end
 	if err := command.Wait(); err != nil {
 		errMsg, _ := io.ReadAll(errBuf)
-		cclog.ComponentError(
-			m.name,
-			fmt.Sprintf("readIpmiSensors(): Failed to wait for the end of command \"%s\": %v\n", command.String(), err),
-		)
-		cclog.ComponentError(m.name, fmt.Sprintf("readIpmiSensors(): command stderr: \"%s\"\n", strings.TrimSpace(string(errMsg))))
-		return
+		return fmt.Errorf("failed to complete command '%s': %w (stderr: %s)", command.String(), err, strings.TrimSpace(string(errMsg)))
 	}
+
+	return nil
 }

 func (m *IpmiCollector) Read(interval time.Duration, output chan lp.CCMessage) {
@@ -203,10 +235,16 @@ func (m *IpmiCollector) Read(interval time.Duration, output chan lp.CCMessage) {
 		return
 	}

-	if len(m.config.IpmitoolPath) > 0 {
-		m.readIpmiTool(m.config.IpmitoolPath, output)
-	} else if len(m.config.IpmisensorsPath) > 0 {
-		m.readIpmiSensors(m.config.IpmisensorsPath, output)
+	if len(m.ipmisensors) > 0 {
+		err := m.readIpmiSensors(output)
+		if err != nil {
+			cclog.ComponentErrorf(m.name, "readIpmiSensors() failed: %v", err)
+		}
+	} else if len(m.ipmitool) > 0 {
+		err := m.readIpmiTool(output)
+		if err != nil {
+			cclog.ComponentErrorf(m.name, "readIpmiTool() failed: %v", err)
+		}
 	}
 }

--- a/collectors/ipmiMetric.md
+++ b/collectors/ipmiMetric.md
@@ -15,9 +15,24 @@ hugo_path: docs/reference/cc-metric-collector/collectors/ipmi.md
  "ipmistat": {
    "ipmitool_path": "/path/to/ipmitool",
    "ipmisensors_path": "/path/to/ipmi-sensors",
+    "use_sudo": true
  }
 ```

 The `ipmistat` collector reads data from `ipmitool` (`ipmitool sensor`) or `ipmi-sensors` (`ipmi-sensors --sdr-cache-recreate --comma-separated-output`).

 The metrics depend on the output of the underlying tools but contain temperature, power and energy metrics.
+
+`ipmitool` and `ipmi-sensors` typically require root to run.
+In order to run `cc-metric-collector` without root priviliges, you can enable `use_sudo`.
+Add a file like this in `/etc/sudoers.d/` to allow `cc-metric-collector` to run the required commands:
+
+```
+# Do not log the following sudo commands from monitoring, since this causes a lot of log spam.
+# However keep log_denied enabled, to detect failures
+Defaults: monitoring !log_allowed, !pam_session
+
+# Allow to use ipmitool and ipmi-sensors
+monitoring ALL = (root) NOPASSWD:/usr/bin/ipmitool sensor
+monitoring ALL = (root) NOPASSWD:/usr/sbin/ipmi-sensors --comma-separated-output --sdr-cache-recreate
+```
--- a/collectors/likwidMetric.go
+++ b/collectors/likwidMetric.go
@@ -16,8 +16,8 @@ package collectors
 import "C"

 import (
+	"bytes"
 	"encoding/json"
-	"errors"
 	"fmt"
 	"maps"
 	"math"
@@ -207,24 +207,25 @@ func (m *LikwidCollector) Init(config json.RawMessage) error {
 	m.config.LibraryPath = LIKWID_LIB_NAME
 	m.config.LockfilePath = LIKWID_DEF_LOCKFILE
 	if len(config) > 0 {
-		err := json.Unmarshal(config, &m.config)
-		if err != nil {
-			return fmt.Errorf("%s Init(): failed to unmarshal JSON config: %w", m.name, err)
+		d := json.NewDecoder(bytes.NewReader(config))
+		d.DisallowUnknownFields()
+		if err := d.Decode(&m.config); err != nil {
+			return fmt.Errorf("%s Init(): Error decoding JSON config: %w", m.name, err)
 		}
 	}
 	lib := dl.New(m.config.LibraryPath, LIKWID_LIB_DL_FLAGS)
 	if lib == nil {
-		return fmt.Errorf("error instantiating DynamicLibrary for %s", m.config.LibraryPath)
+		return fmt.Errorf("%s Init(): error instantiating DynamicLibrary for %s", m.name, m.config.LibraryPath)
 	}
 	err := lib.Open()
 	if err != nil {
-		return fmt.Errorf("error opening %s: %w", m.config.LibraryPath, err)
+		return fmt.Errorf("%s Init(): error opening %s: %w", m.name, m.config.LibraryPath, err)
 	}

 	if m.config.ForceOverwrite {
 		cclog.ComponentDebug(m.name, "Set LIKWID_FORCE=1")
 		if err := os.Setenv("LIKWID_FORCE", "1"); err != nil {
-			return fmt.Errorf("error setting environment variable LIKWID_FORCE=1: %w", err)
+			return fmt.Errorf("%s Init(): error setting environment variable LIKWID_FORCE=1: %w", m.name, err)
 		}
 	}
 	if err := m.setup(); err != nil {
@@ -295,16 +296,12 @@ func (m *LikwidCollector) Init(config json.RawMessage) error {

 	// If no event set could be added, shut down LikwidCollector
 	if totalMetrics == 0 {
-		err := errors.New("no LIKWID eventset or metric usable")
-		cclog.ComponentError(m.name, err.Error())
-		return err
+		return fmt.Errorf("%s Init(): no LIKWID eventset or metric usable", m.name)
 	}

 	ret := C.topology_init()
 	if ret != 0 {
-		err := errors.New("failed to initialize topology module")
-		cclog.ComponentError(m.name, err.Error())
-		return err
+		return fmt.Errorf("%s Init(): failed to initialize topology module", m.name)
 	}
 	m.measureThread = thread.New()
 	switch m.config.AccessMode {
@@ -319,7 +316,7 @@ func (m *LikwidCollector) Init(config json.RawMessage) error {
 				p = m.config.DaemonPath
 			}
 			if err := os.Setenv("PATH", p); err != nil {
-				return fmt.Errorf("error setting environment variable PATH=%s: %w", p, err)
+				return fmt.Errorf("%s Init(): error setting environment variable PATH=%s: %w", m.name, p, err)
 			}
 		}
 		C.HPMmode(1)
--- a/collectors/loadavgMetric.go
+++ b/collectors/loadavgMetric.go
@@ -8,6 +8,7 @@
 package collectors

 import (
+	"bytes"
 	"encoding/json"
 	"fmt"
 	"os"
@@ -48,9 +49,10 @@ func (m *LoadavgCollector) Init(config json.RawMessage) error {
 		return fmt.Errorf("%s Init(): setup() call failed: %w", m.name, err)
 	}
 	if len(config) > 0 {
-		err := json.Unmarshal(config, &m.config)
-		if err != nil {
-			return err
+		d := json.NewDecoder(bytes.NewReader(config))
+		d.DisallowUnknownFields()
+		if err := d.Decode(&m.config); err != nil {
+			return fmt.Errorf("%s Init(): Error decoding JSON config: %w", m.name, err)
 		}
 	}
 	m.meta = map[string]string{
@@ -63,16 +65,17 @@ func (m *LoadavgCollector) Init(config json.RawMessage) error {
 		"load_five",
 		"load_fifteen",
 	}
-	m.load_skips = make([]bool, len(m.load_matches))
 	m.proc_matches = []string{
 		"proc_run",
 		"proc_total",
 	}
-	m.proc_skips = make([]bool, len(m.proc_matches))

+	m.load_skips = make([]bool, len(m.load_matches))
 	for i, name := range m.load_matches {
 		m.load_skips[i] = slices.Contains(m.config.ExcludeMetrics, name)
 	}
+
+	m.proc_skips = make([]bool, len(m.proc_matches))
 	for i, name := range m.proc_matches {
 		m.proc_skips[i] = slices.Contains(m.config.ExcludeMetrics, name)
 	}
@@ -106,7 +109,7 @@ func (m *LoadavgCollector) Read(interval time.Duration, output chan lp.CCMessage
 		if m.load_skips[i] {
 			continue
 		}
-		y, err := lp.NewMessage(name, m.tags, m.meta, map[string]any{"value": x}, now)
+		y, err := lp.NewMetric(name, m.tags, m.meta, x, now)
 		if err == nil {
 			output <- y
 		}
@@ -125,7 +128,7 @@ func (m *LoadavgCollector) Read(interval time.Duration, output chan lp.CCMessage
 		if m.proc_skips[i] {
 			continue
 		}
-		y, err := lp.NewMessage(name, m.tags, m.meta, map[string]any{"value": x}, now)
+		y, err := lp.NewMetric(name, m.tags, m.meta, x, now)
 		if err == nil {
 			output <- y
 		}
--- a/collectors/lustreMetric.go
+++ b/collectors/lustreMetric.go
@@ -8,6 +8,7 @@
 package collectors

 import (
+	"bytes"
 	"encoding/json"
 	"errors"
 	"fmt"
@@ -18,7 +19,6 @@ import (
 	"strings"
 	"time"

-	cclog "github.com/ClusterCockpit/cc-lib/v2/ccLogger"
 	lp "github.com/ClusterCockpit/cc-lib/v2/ccMessage"
 )

@@ -300,9 +300,10 @@ func (m *LustreCollector) Init(config json.RawMessage) error {
 	m.name = "LustreCollector"
 	m.parallel = true
 	if len(config) > 0 {
-		err = json.Unmarshal(config, &m.config)
-		if err != nil {
-			return err
+		d := json.NewDecoder(bytes.NewReader(config))
+		d.DisallowUnknownFields()
+		if err := d.Decode(&m.config); err != nil {
+			return fmt.Errorf("%s Init(): Error decoding JSON config: %w", m.name, err)
 		}
 	}
 	if err := m.setup(); err != nil {
@@ -316,18 +317,15 @@ func (m *LustreCollector) Init(config json.RawMessage) error {
 	if !m.config.Sudo {
 		user, err := user.Current()
 		if err != nil {
-			cclog.ComponentError(m.name, "Failed to get current user:", err.Error())
-			return err
+			return fmt.Errorf("%s Init(): Failed to get current user: %w", m.name, err)
 		}
 		if user.Uid != "0" {
-			cclog.ComponentError(m.name, "Lustre file system statistics can only be queried by user root")
-			return err
+			return fmt.Errorf("%s Init(): Lustre file system statistics can only be queried by user root", m.name)
 		}
 	} else {
 		p, err := exec.LookPath("sudo")
 		if err != nil {
-			cclog.ComponentError(m.name, "Cannot find 'sudo'")
-			return err
+			return fmt.Errorf("%s Init(): Cannot find 'sudo': %w", m.name, err)
 		}
 		m.sudoCmd = p
 	}
@@ -336,7 +334,7 @@ func (m *LustreCollector) Init(config json.RawMessage) error {
 	if err != nil {
 		p, err = exec.LookPath(LCTL_CMD)
 		if err != nil {
-			return err
+			return fmt.Errorf("%s Init(): Cannot find %s command: %w", m.name, LCTL_CMD, err)
 		}
 	}
 	m.lctl = p
@@ -364,12 +362,12 @@ func (m *LustreCollector) Init(config json.RawMessage) error {
 		}
 	}
 	if len(m.definitions) == 0 {
-		return errors.New("no metrics to collect")
+		return fmt.Errorf("%s Init(): no metrics to collect", m.name)
 	}

 	devices := m.getDevices()
 	if len(devices) == 0 {
-		return errors.New("no Lustre devices found")
+		return fmt.Errorf("%s Init(): no Lustre devices found", m.name)
 	}
 	m.stats = make(map[string]map[string]int64)
 	for _, d := range devices {
--- a/collectors/lustreMetric.md
+++ b/collectors/lustreMetric.md
@@ -55,3 +55,16 @@ Metrics:
 * `lustre_inode_permission_diff` (if `send_diff_values == true`)

 This collector adds an `device` tag.
+
+`lctl` typically require root to run.
+In order to run `cc-metric-collector` without root priviliges, you can enable `use_sudo`.
+Add a file like this in `/etc/sudoers.d/` to allow `cc-metric-collector` to run the required command:
+
+```
+# Do not log the following sudo commands from monitoring, since this causes a lot of log spam.
+# However keep log_denied enabled, to detect failures
+Defaults: monitoring !log_allowed, !pam_session
+
+# Allow to use lctl
+monitoring ALL = (root) NOPASSWD:/absolute/path/to/lctl get_param llite.*.stats
+```
--- a/collectors/memstatMetric.go
+++ b/collectors/memstatMetric.go
@@ -9,8 +9,8 @@ package collectors

 import (
 	"bufio"
+	"bytes"
 	"encoding/json"
-	"errors"
 	"fmt"
 	"os"
 	"path/filepath"
@@ -72,7 +72,8 @@ func getStats(filename string) map[string]MemstatStats {
 	for scanner.Scan() {
 		line := scanner.Text()
 		linefields := strings.Fields(line)
-		if len(linefields) == 3 {
+		switch len(linefields) {
+		case 3:
 			v, err := strconv.ParseFloat(linefields[1], 64)
 			if err == nil {
 				stats[strings.Trim(linefields[0], ":")] = MemstatStats{
@@ -80,7 +81,7 @@ func getStats(filename string) map[string]MemstatStats {
 					unit:  linefields[2],
 				}
 			}
-		} else if len(linefields) == 5 {
+		case 5:
 			v, err := strconv.ParseFloat(linefields[3], 64)
 			if err == nil {
 				cclog.ComponentDebug("getStats", strings.Trim(linefields[2], ":"), v, linefields[4])
@@ -95,35 +96,60 @@ func getStats(filename string) map[string]MemstatStats {
 }

 func (m *MemstatCollector) Init(config json.RawMessage) error {
-	var err error
 	m.name = "MemstatCollector"
 	m.parallel = true
 	m.config.NodeStats = true
 	m.config.NumaStats = false
 	if len(config) > 0 {
-		err = json.Unmarshal(config, &m.config)
-		if err != nil {
-			return err
+		d := json.NewDecoder(bytes.NewReader(config))
+		d.DisallowUnknownFields()
+		if err := d.Decode(&m.config); err != nil {
+			return fmt.Errorf("%s Init(): Error decoding JSON config: %w", m.name, err)
 		}
 	}
-	m.meta = map[string]string{"source": m.name, "group": "Memory"}
+	m.meta = map[string]string{
+		"source": m.name,
+		"group":  "Memory",
+	}
 	m.stats = make(map[string]int64)
 	m.matches = make(map[string]string)
 	m.tags = map[string]string{"type": "node"}
 	matches := map[string]string{
-		"MemTotal":     "mem_total",
-		"SwapTotal":    "swap_total",
-		"SReclaimable": "mem_sreclaimable",
-		"Slab":         "mem_slab",
-		"MemFree":      "mem_free",
-		"Buffers":      "mem_buffers",
-		"Cached":       "mem_cached",
-		"MemAvailable": "mem_available",
-		"SwapFree":     "swap_free",
-		"MemShared":    "mem_shared",
+		"MemTotal":        "mem_total",
+		"SwapTotal":       "swap_total",
+		"SReclaimable":    "mem_sreclaimable",
+		"Slab":            "mem_slab",
+		"MemFree":         "mem_free",
+		"Buffers":         "mem_buffers",
+		"Cached":          "mem_cached",
+		"MemAvailable":    "mem_available",
+		"SwapFree":        "swap_free",
+		"Shmem":           "mem_shared",
+		"Active":          "mem_active",
+		"Inactive":        "mem_inactive",
+		"Dirty":           "mem_dirty",
+		"Writeback":       "mem_writeback",
+		"AnonPages":       "mem_anon_pages",
+		"Mapped":          "mem_mapped",
+		"VmallocTotal":    "mem_vmalloc_total",
+		"AnonHugePages":   "mem_anon_hugepages",
+		"ShmemHugePages":  "mem_shared_hugepages",
+		"ShmemPmdMapped":  "mem_shared_pmd_mapped",
+		"HugePages_Total": "mem_hugepages_total",
+		"HugePages_Free":  "mem_hugepages_free",
+		"HugePages_Rsvd":  "mem_hugepages_reserved",
+		"HugePages_Surp":  "mem_hugepages_surplus",
+		"Hugepagesize":    "mem_hugepages_size",
+		"DirectMap4k":     "mem_direct_mapped_4k",
+		"DirectMap4M":     "mem_direct_mapped_4m",
+		"DirectMap2M":     "mem_direct_mapped_2m",
+		"DirectMap1G":     "mem_direct_mapped_1g",
+		"Mlocked":         "mem_locked",
+		"PageTables":      "mem_pagetables",
+		"KernelStack":     "mem_kernelstack",
 	}
 	for k, v := range matches {
-		if !slices.Contains(m.config.ExcludeMetrics, k) {
+		if !slices.Contains(m.config.ExcludeMetrics, v) {
 			m.matches[k] = v
 		}
 	}
@@ -131,8 +157,8 @@ func (m *MemstatCollector) Init(config json.RawMessage) error {
 	if !slices.Contains(m.config.ExcludeMetrics, "mem_used") {
 		m.sendMemUsed = true
 	}
-	if len(m.matches) == 0 {
-		return errors.New("no metrics to collect")
+	if len(m.matches) == 0 && !m.sendMemUsed {
+		return fmt.Errorf("%s Init(): no metrics to collect", m.name)
 	}
 	if err := m.setup(); err != nil {
 		return fmt.Errorf("%s Init(): setup() call failed: %w", m.name, err)
@@ -140,7 +166,7 @@ func (m *MemstatCollector) Init(config json.RawMessage) error {

 	if m.config.NodeStats {
 		if stats := getStats(MEMSTATFILE); len(stats) == 0 {
-			return fmt.Errorf("cannot read data from file %s", MEMSTATFILE)
+			return fmt.Errorf("%s Init(): cannot read data from file %s", m.name, MEMSTATFILE)
 		}
 	}

@@ -152,7 +178,7 @@ func (m *MemstatCollector) Init(config json.RawMessage) error {
 			m.nodefiles = make(map[int]MemstatCollectorNode)
 			for _, f := range files {
 				if stats := getStats(f); len(stats) == 0 {
-					return fmt.Errorf("cannot read data from file %s", f)
+					return fmt.Errorf("%s Init(): cannot read data from file %s", m.name, f)
 				}
 				rematch := regex.FindStringSubmatch(f)
 				if len(rematch) == 2 {
@@ -172,7 +198,7 @@ func (m *MemstatCollector) Init(config json.RawMessage) error {
 		}
 	}
 	m.init = true
-	return err
+	return nil
 }

 func (m *MemstatCollector) Read(interval time.Duration, output chan lp.CCMessage) {
@@ -191,7 +217,7 @@ func (m *MemstatCollector) Read(interval time.Duration, output chan lp.CCMessage
 				}
 			}

-			y, err := lp.NewMessage(name, tags, m.meta, map[string]any{"value": value}, time.Now())
+			y, err := lp.NewMetric(name, tags, m.meta, value, time.Now())
 			if err == nil {
 				if len(unit) > 0 {
 					y.AddMeta("unit", unit)
@@ -221,10 +247,16 @@ func (m *MemstatCollector) Read(interval time.Duration, output chan lp.CCMessage
 								unit = cacheVal.unit
 							}
 						}
+						if shmemVal, shmem := stats["Shmem"]; shmem {
+							memUsed -= shmemVal.value
+							if len(shmemVal.unit) > 0 && len(unit) == 0 {
+								unit = shmemVal.unit
+							}
+						}
 					}
 				}
 			}
-			y, err := lp.NewMessage("mem_used", tags, m.meta, map[string]any{"value": memUsed}, time.Now())
+			y, err := lp.NewMetric("mem_used", tags, m.meta, memUsed, time.Now())
 			if err == nil {
 				if len(unit) > 0 {
 					y.AddMeta("unit", unit)
--- a/collectors/memstatMetric.md
+++ b/collectors/memstatMetric.md
@@ -32,7 +32,29 @@ Metrics:
 * `mem_cached`
 * `mem_available`
 * `mem_shared`
+* `mem_active`
+* `mem_inactive`
+* `mem_dirty`
+* `mem_writeback`
+* `mem_anon_pages`
+* `mem_mapped`
+* `mem_vmalloc_total`
+* `mem_anon_hugepages`
+* `mem_shared_hugepages`
+* `mem_shared_pmd_mapped`
+* `mem_hugepages_total`
+* `mem_hugepages_free`
+* `mem_hugepages_reserved`
+* `mem_hugepages_surplus`
+* `mem_hugepages_size`
+* `mem_direct_mapped_4k`
+* `mem_direct_mapped_2m`
+* `mem_direct_mapped_4m`
+* `mem_direct_mapped_1g`
+* `mem_locked`
+* `mem_pagetables`
+* `mem_kernelstack`
 * `swap_total`
 * `swap_free`
-* `mem_used` = `mem_total` - (`mem_free` + `mem_buffers` + `mem_cached`)
+* `mem_used` = `mem_total` - (`mem_free` + `mem_buffers` + `mem_cached` + `mem_shared`)

--- a/collectors/netstatMetric.go
+++ b/collectors/netstatMetric.go
@@ -9,6 +9,7 @@ package collectors

 import (
 	"bufio"
+	"bytes"
 	"encoding/json"
 	"fmt"
 	"os"
@@ -99,10 +100,10 @@ func (m *NetstatCollector) Init(config json.RawMessage) error {
 	m.config.SendDerivedValues = false
 	// Read configuration file, allow overwriting default config
 	if len(config) > 0 {
-		err := json.Unmarshal(config, &m.config)
-		if err != nil {
-			cclog.ComponentError(m.name, "Error reading config:", err.Error())
-			return err
+		d := json.NewDecoder(bytes.NewReader(config))
+		d.DisallowUnknownFields()
+		if err := d.Decode(&m.config); err != nil {
+			return fmt.Errorf("%s Init(): failed to decode JSON config: %w", m.name, err)
 		}
 	}

@@ -133,11 +134,31 @@ func (m *NetstatCollector) Init(config json.RawMessage) error {
 		// Check if device is a included device
 		if slices.Contains(m.config.IncludeDevices, canonical) {
 			// Tag will contain original device name (raw).
-			tags := map[string]string{"stype": "network", "stype-id": raw, "type": "node"}
-			meta_unit_byte := map[string]string{"source": m.name, "group": "Network", "unit": "bytes"}
-			meta_unit_byte_per_sec := map[string]string{"source": m.name, "group": "Network", "unit": "bytes/sec"}
-			meta_unit_pkts := map[string]string{"source": m.name, "group": "Network", "unit": "packets"}
-			meta_unit_pkts_per_sec := map[string]string{"source": m.name, "group": "Network", "unit": "packets/sec"}
+			tags := map[string]string{
+				"stype":    "network",
+				"stype-id": raw,
+				"type":     "node",
+			}
+			meta_unit_byte := map[string]string{
+				"source": m.name,
+				"group":  "Network",
+				"unit":   "bytes",
+			}
+			meta_unit_byte_per_sec := map[string]string{
+				"source": m.name,
+				"group":  "Network",
+				"unit":   "bytes/sec",
+			}
+			meta_unit_pkts := map[string]string{
+				"source": m.name,
+				"group":  "Network",
+				"unit":   "packets",
+			}
+			meta_unit_pkts_per_sec := map[string]string{
+				"source": m.name,
+				"group":  "Network",
+				"unit":   "packets/sec",
+			}

 			m.matches[canonical] = []NetstatCollectorMetric{
 				{
@@ -241,14 +262,14 @@ func (m *NetstatCollector) Read(interval time.Duration, output chan lp.CCMessage
 					continue
 				}
 				if m.config.SendAbsoluteValues {
-					if y, err := lp.NewMessage(metric.name, metric.tags, metric.meta, map[string]any{"value": v}, now); err == nil {
+					if y, err := lp.NewMetric(metric.name, metric.tags, metric.meta, v, now); err == nil {
 						output <- y
 					}
 				}
 				if m.config.SendDerivedValues {
 					if metric.lastValue >= 0 {
 						rate := float64(v-metric.lastValue) / timeDiff
-						if y, err := lp.NewMessage(metric.name+"_bw", metric.tags, metric.meta_rates, map[string]any{"value": rate}, now); err == nil {
+						if y, err := lp.NewMetric(metric.name+"_bw", metric.tags, metric.meta_rates, rate, now); err == nil {
 							output <- y
 						}
 					}
--- a/collectors/nfsMetric.go
+++ b/collectors/nfsMetric.go
@@ -8,6 +8,7 @@
 package collectors

 import (
+	"bytes"
 	"encoding/json"
 	"fmt"
 	"slices"
@@ -45,12 +46,7 @@ type nfsCollector struct {
 }

 func (m *nfsCollector) updateStats() error {
-	cmd := exec.Command(m.config.Nfsstats, `-l`, `--all`)
-
-	// Wait for cmd end
-	if err := cmd.Wait(); err != nil {
-		return fmt.Errorf("%s updateStats(): %w", m.name, err)
-	}
+	cmd := exec.Command(m.config.Nfsstats, "-l", "--all")

 	buffer, err := cmd.Output()
 	if err != nil {
@@ -95,9 +91,10 @@ func (m *nfsCollector) MainInit(config json.RawMessage) error {
 	m.config.Nfsstats = string(NFSSTAT_EXEC)
 	// Read JSON configuration
 	if len(config) > 0 {
-		err := json.Unmarshal(config, &m.config)
-		if err != nil {
-			return fmt.Errorf("%s Init(): failed to unmarshal JSON config: %w", m.name, err)
+		d := json.NewDecoder(bytes.NewReader(config))
+		d.DisallowUnknownFields()
+		if err := d.Decode(&m.config); err != nil {
+			return fmt.Errorf("%s Init(): failed to decode JSON config: %w", m.name, err)
 		}
 	}
 	m.meta = map[string]string{
@@ -149,14 +146,13 @@ func (m *nfsCollector) Read(interval time.Duration, output chan lp.CCMessage) {
 			continue
 		}

-		valueMap := make(map[string]any)
 		if data.current >= 0 && data.last >= 0 {
-			valueMap["value"] = data.current - data.last
-		}
-		y, err := lp.NewMessage(fmt.Sprintf("%s_%s", prefix, name), m.tags, m.meta, valueMap, timestamp)
-		if err == nil {
-			y.AddMeta("version", m.version)
-			output <- y
+			value := data.current - data.last
+			y, err := lp.NewMetric(fmt.Sprintf("%s_%s", prefix, name), m.tags, m.meta, value, timestamp)
+			if err == nil {
+				y.AddMeta("version", m.version)
+				output <- y
+			}
 		}
 	}
 }
--- a/collectors/nfsiostatMetric.go
+++ b/collectors/nfsiostatMetric.go
@@ -8,6 +8,7 @@
 package collectors

 import (
+	"bytes"
 	"encoding/json"
 	"fmt"
 	"os"
@@ -17,14 +18,13 @@ import (
 	"strings"
 	"time"

-	cclog "github.com/ClusterCockpit/cc-lib/v2/ccLogger"
 	lp "github.com/ClusterCockpit/cc-lib/v2/ccMessage"
 )

 // These are the fields we read from the JSON configuration
 type NfsIOStatCollectorConfig struct {
 	ExcludeMetrics          []string `json:"exclude_metrics,omitempty"`
-	ExcludeFilesystem       []string `json:"exclude_filesystem,omitempty"`
+	ExcludeFilesystems      []string `json:"exclude_filesystem,omitempty"`
 	UseServerAddressAsSType bool     `json:"use_server_as_stype,omitempty"`
 	SendAbsoluteValues      bool     `json:"send_abs_values"`
 	SendDerivedValues       bool     `json:"send_derived_values"`
@@ -75,7 +75,7 @@ func (m *NfsIOStatCollector) readNfsiostats() map[string]map[string]int64 {
 		// Is this a device line with mount point, remote target and NFS version?
 		dev := resolve_regex_fields(l, deviceRegex)
 		if len(dev) > 0 {
-			if !slices.Contains(m.config.ExcludeFilesystem, dev[m.key]) {
+			if !slices.Contains(m.config.ExcludeFilesystems, dev[m.key]) {
 				current = dev
 				if len(current["version"]) == 0 {
 					current["version"] = "3"
@@ -104,7 +104,6 @@ func (m *NfsIOStatCollector) readNfsiostats() map[string]map[string]int64 {
 }

 func (m *NfsIOStatCollector) Init(config json.RawMessage) error {
-	var err error = nil
 	m.name = "NfsIOStatCollector"
 	if err := m.setup(); err != nil {
 		return fmt.Errorf("%s Init(): setup() call failed: %w", m.name, err)
@@ -117,10 +116,10 @@ func (m *NfsIOStatCollector) Init(config json.RawMessage) error {
 	m.config.SendAbsoluteValues = true
 	m.config.SendDerivedValues = false
 	if len(config) > 0 {
-		err = json.Unmarshal(config, &m.config)
-		if err != nil {
-			cclog.ComponentError(m.name, "Error reading config:", err.Error())
-			return err
+		d := json.NewDecoder(bytes.NewReader(config))
+		d.DisallowUnknownFields()
+		if err := d.Decode(&m.config); err != nil {
+			return fmt.Errorf("%s Init(): failed to decode JSON config: %w", m.name, err)
 		}
 	}
 	m.key = "mntpoint"
@@ -130,7 +129,7 @@ func (m *NfsIOStatCollector) Init(config json.RawMessage) error {
 	m.data = m.readNfsiostats()
 	m.lastTimestamp = time.Now()
 	m.init = true
-	return err
+	return nil
 }

 func (m *NfsIOStatCollector) Read(interval time.Duration, output chan lp.CCMessage) {
@@ -146,14 +145,7 @@ func (m *NfsIOStatCollector) Read(interval time.Duration, output chan lp.CCMessa
 		if old, ok := m.data[mntpoint]; ok {
 			for name, newVal := range values {
 				if m.config.SendAbsoluteValues {
-					msg, err := lp.NewMessage(
-						"nfsio_"+name,
-						m.tags,
-						m.meta,
-						map[string]any{
-							"value": newVal,
-						},
-						now)
+					msg, err := lp.NewMetric("nfsio_"+name, m.tags, m.meta, newVal, now)
 					if err == nil {
 						msg.AddTag("stype", "filesystem")
 						msg.AddTag("stype-id", mntpoint)
@@ -162,7 +154,7 @@ func (m *NfsIOStatCollector) Read(interval time.Duration, output chan lp.CCMessa
 				}
 				if m.config.SendDerivedValues {
 					rate := float64(newVal-old[name]) / timeDiff
-					msg, err := lp.NewMessage(fmt.Sprintf("nfsio_%s_bw", name), m.tags, m.meta, map[string]any{"value": rate}, now)
+					msg, err := lp.NewMetric(fmt.Sprintf("nfsio_%s_bw", name), m.tags, m.meta, rate, now)
 					if err == nil {
 						if strings.HasPrefix(name, "page") {
 							msg.AddMeta("unit", "4K_pages/s")
--- a/collectors/nfsiostatMetric.md
+++ b/collectors/nfsiostatMetric.md
@@ -16,7 +16,7 @@ hugo_path: docs/reference/cc-metric-collector/collectors/nfsio.md
    "exclude_metrics": [
      "oread", "pageread"
    ],
-    "exclude_filesystems": [
+    "exclude_filesystem": [
      "/mnt"
    ],
    "use_server_as_stype": false,
--- a/collectors/numastatsMetric.go
+++ b/collectors/numastatsMetric.go
@@ -2,6 +2,7 @@ package collectors

 import (
 	"bufio"
+	"bytes"
 	"encoding/json"
 	"fmt"
 	"os"
@@ -83,9 +84,10 @@ func (m *NUMAStatsCollector) Init(config json.RawMessage) error {

 	m.config.SendAbsoluteValues = true
 	if len(config) > 0 {
-		err := json.Unmarshal(config, &m.config)
-		if err != nil {
-			return fmt.Errorf("%s Init(): unable to unmarshal numastat configuration: %w", m.name, err)
+		d := json.NewDecoder(bytes.NewReader(config))
+		d.DisallowUnknownFields()
+		if err := d.Decode(&m.config); err != nil {
+			return fmt.Errorf("%s Init(): Error decoding JSON config: %w", m.name, err)
 		}
 	}

--- a/collectors/numastatsMetric.md
+++ b/collectors/numastatsMetric.md
@@ -15,7 +15,7 @@ hugo_path: docs/reference/cc-metric-collector/collectors/numastat.md
  "numastats": {
    "send_abs_values" : true,
    "send_derived_values" : true
-}
+  }
 ```

 The `numastat` collector reads data from `/sys/devices/system/node/node*/numastat` and outputs a handful **memoryDomain** metrics. See: <https://www.kernel.org/doc/html/latest/admin-guide/numastat.html>
--- a/collectors/nvidiaMetric.go
+++ b/collectors/nvidiaMetric.go
@@ -72,9 +72,10 @@ func (m *NvidiaCollector) Init(config json.RawMessage) error {
 		return fmt.Errorf("%s Init(): setup() call failed: %w", m.name, err)
 	}
 	if len(config) > 0 {
-		err = json.Unmarshal(config, &m.config)
-		if err != nil {
-			return err
+		d := json.NewDecoder(strings.NewReader(string(config)))
+		d.DisallowUnknownFields()
+		if err = d.Decode(&m.config); err != nil {
+			return fmt.Errorf("%s Init(): Error decoding JSON config: %w", m.name, err)
 		}
 	}
 	m.meta = map[string]string{
@@ -90,22 +91,18 @@ func (m *NvidiaCollector) Init(config json.RawMessage) error {
 	// Error: NVML library not found
 	// (nvml.ErrorString can not be used in this case)
 	if ret == nvml.ERROR_LIBRARY_NOT_FOUND {
-		err = fmt.Errorf("NVML library not found")
-		cclog.ComponentError(m.name, err.Error())
-		return err
+		return fmt.Errorf("%s Init(): NVML library not found", m.name)
 	}
 	if ret != nvml.SUCCESS {
 		err = errors.New(nvml.ErrorString(ret))
-		cclog.ComponentError(m.name, "Unable to initialize NVML", err.Error())
-		return err
+		return fmt.Errorf("%s Init(): Unable to initialize NVML: %w", m.name, err)
 	}

 	// Number of NVIDIA GPUs
 	num_gpus, ret := nvml.DeviceGetCount()
 	if ret != nvml.SUCCESS {
 		err = errors.New(nvml.ErrorString(ret))
-		cclog.ComponentError(m.name, "Unable to get device count", err.Error())
-		return err
+		return fmt.Errorf("%s Init(): Unable to get device count: %w", m.name, err)
 	}

 	// For all GPUs
--- a/collectors/raplMetric.go
+++ b/collectors/raplMetric.go
@@ -8,6 +8,7 @@
 package collectors

 import (
+	"bytes"
 	"encoding/json"
 	"fmt"
 	"os"
@@ -67,10 +68,10 @@ func (m *RAPLCollector) Init(config json.RawMessage) error {

 	// Read in the JSON configuration
 	if len(config) > 0 {
-		err := json.Unmarshal(config, &m.config)
-		if err != nil {
-			cclog.ComponentError(m.name, "Error reading config:", err.Error())
-			return err
+		d := json.NewDecoder(bytes.NewReader(config))
+		d.DisallowUnknownFields()
+		if err := d.Decode(&m.config); err != nil {
+			return fmt.Errorf("%s Init(): Error decoding JSON config: %w", m.name, err)
 		}
 	}

@@ -241,12 +242,7 @@ func (m *RAPLCollector) Read(interval time.Duration, output chan lp.CCMessage) {
 				timeDiff := energyTimestamp.Sub(p.energyTimestamp)
 				averagePower := float64(energyDiff) / float64(timeDiff.Microseconds())

-				y, err := lp.NewMessage(
-					"rapl_average_power",
-					p.tags,
-					m.meta,
-					map[string]any{"value": averagePower},
-					energyTimestamp)
+				y, err := lp.NewMetric("rapl_average_power", p.tags, m.meta, averagePower, energyTimestamp)
 				if err == nil {
 					output <- y
 				}
--- a/collectors/rocmsmiMetric.go
+++ b/collectors/rocmsmiMetric.go
@@ -8,8 +8,8 @@
 package collectors

 import (
+	"bytes"
 	"encoding/json"
-	"errors"
 	"fmt"
 	"slices"
 	"strconv"
@@ -51,7 +51,6 @@ type RocmSmiCollector struct {
 // Called once by the collector manager
 // All tags, meta data tags and metrics that do not change over the runtime should be set here
 func (m *RocmSmiCollector) Init(config json.RawMessage) error {
-	var err error = nil
 	// Always set the name early in Init() to use it in cclog.Component* functions
 	m.name = "RocmSmiCollector"
 	// This is for later use, also call it early
@@ -60,25 +59,21 @@ func (m *RocmSmiCollector) Init(config json.RawMessage) error {
 	}
 	// Read in the JSON configuration
 	if len(config) > 0 {
-		err = json.Unmarshal(config, &m.config)
-		if err != nil {
-			cclog.ComponentError(m.name, "Error reading config:", err.Error())
-			return err
+		d := json.NewDecoder(bytes.NewReader(config))
+		d.DisallowUnknownFields()
+		if err := d.Decode(&m.config); err != nil {
+			return fmt.Errorf("%s Init(): Error decoding JSON config: %w", m.name, err)
 		}
 	}

 	ret := rocm_smi.Init()
 	if ret != rocm_smi.STATUS_SUCCESS {
-		err = errors.New("failed to initialize ROCm SMI library")
-		cclog.ComponentError(m.name, err.Error())
-		return err
+		return fmt.Errorf("%s Init(): failed to initialize ROCm SMI library", m.name)
 	}

 	numDevs, ret := rocm_smi.NumMonitorDevices()
 	if ret != rocm_smi.STATUS_SUCCESS {
-		err = errors.New("failed to get number of GPUs from ROCm SMI library")
-		cclog.ComponentError(m.name, err.Error())
-		return err
+		return fmt.Errorf("%s Init(): failed to get number of GPUs from ROCm SMI library", m.name)
 	}

 	m.devices = make([]RocmSmiCollectorDevice, 0)
@@ -90,16 +85,12 @@ func (m *RocmSmiCollector) Init(config json.RawMessage) error {
 		}
 		device, ret := rocm_smi.DeviceGetHandleByIndex(i)
 		if ret != rocm_smi.STATUS_SUCCESS {
-			err = fmt.Errorf("failed to get handle for GPU %d", i)
-			cclog.ComponentError(m.name, err.Error())
-			return err
+			return fmt.Errorf("%s Init(): failed to get get handle for GPU %d", m.name, i)
 		}

 		pciInfo, ret := rocm_smi.DeviceGetPciInfo(device)
 		if ret != rocm_smi.STATUS_SUCCESS {
-			err = fmt.Errorf("failed to get PCI information for GPU %d", i)
-			cclog.ComponentError(m.name, err.Error())
-			return err
+			return fmt.Errorf("%s Init(): failed to get PCI information for GPU %d", m.name, i)
 		}

 		pciId := fmt.Sprintf(
@@ -149,7 +140,7 @@ func (m *RocmSmiCollector) Init(config json.RawMessage) error {

 	// Set this flag only if everything is initialized properly, all required files exist, ...
 	m.init = true
-	return err
+	return nil
 }

 // Read collects all metrics belonging to the sample collector
@@ -167,128 +158,110 @@ func (m *RocmSmiCollector) Read(interval time.Duration, output chan lp.CCMessage

 		if !dev.excludeMetrics["rocm_gfx_util"] {
 			value := metrics.Average_gfx_activity
-			y, err := lp.NewMessage("rocm_gfx_util", dev.tags, dev.meta, map[string]any{"value": value}, timestamp)
-			if err == nil {
+			if y, err := lp.NewMetric("rocm_gfx_util", dev.tags, dev.meta, value, timestamp); err == nil {
 				output <- y
 			}
 		}
 		if !dev.excludeMetrics["rocm_umc_util"] {
 			value := metrics.Average_umc_activity
-			y, err := lp.NewMessage("rocm_umc_util", dev.tags, dev.meta, map[string]any{"value": value}, timestamp)
-			if err == nil {
+			if y, err := lp.NewMetric("rocm_umc_util", dev.tags, dev.meta, value, timestamp); err == nil {
 				output <- y
 			}
 		}
 		if !dev.excludeMetrics["rocm_mm_util"] {
 			value := metrics.Average_mm_activity
-			y, err := lp.NewMessage("rocm_mm_util", dev.tags, dev.meta, map[string]any{"value": value}, timestamp)
-			if err == nil {
+			if y, err := lp.NewMetric("rocm_mm_util", dev.tags, dev.meta, value, timestamp); err == nil {
 				output <- y
 			}
 		}
 		if !dev.excludeMetrics["rocm_avg_power"] {
 			value := metrics.Average_socket_power
-			y, err := lp.NewMessage("rocm_avg_power", dev.tags, dev.meta, map[string]any{"value": value}, timestamp)
-			if err == nil {
+			if y, err := lp.NewMetric("rocm_avg_power", dev.tags, dev.meta, value, timestamp); err == nil {
 				output <- y
 			}
 		}
 		if !dev.excludeMetrics["rocm_temp_mem"] {
 			value := metrics.Temperature_mem
-			y, err := lp.NewMessage("rocm_temp_mem", dev.tags, dev.meta, map[string]any{"value": value}, timestamp)
-			if err == nil {
+			if y, err := lp.NewMetric("rocm_temp_mem", dev.tags, dev.meta, value, timestamp); err == nil {
 				output <- y
 			}
 		}
 		if !dev.excludeMetrics["rocm_temp_hotspot"] {
 			value := metrics.Temperature_hotspot
-			y, err := lp.NewMessage("rocm_temp_hotspot", dev.tags, dev.meta, map[string]any{"value": value}, timestamp)
-			if err == nil {
+			if y, err := lp.NewMetric("rocm_temp_hotspot", dev.tags, dev.meta, value, timestamp); err == nil {
 				output <- y
 			}
 		}
 		if !dev.excludeMetrics["rocm_temp_edge"] {
 			value := metrics.Temperature_edge
-			y, err := lp.NewMessage("rocm_temp_edge", dev.tags, dev.meta, map[string]any{"value": value}, timestamp)
-			if err == nil {
+			if y, err := lp.NewMetric("rocm_temp_edge", dev.tags, dev.meta, value, timestamp); err == nil {
 				output <- y
 			}
 		}
 		if !dev.excludeMetrics["rocm_temp_vrgfx"] {
 			value := metrics.Temperature_vrgfx
-			y, err := lp.NewMessage("rocm_temp_vrgfx", dev.tags, dev.meta, map[string]any{"value": value}, timestamp)
-			if err == nil {
+			if y, err := lp.NewMetric("rocm_temp_vrgfx", dev.tags, dev.meta, value, timestamp); err == nil {
 				output <- y
 			}
 		}
 		if !dev.excludeMetrics["rocm_temp_vrsoc"] {
 			value := metrics.Temperature_vrsoc
-			y, err := lp.NewMessage("rocm_temp_vrsoc", dev.tags, dev.meta, map[string]any{"value": value}, timestamp)
-			if err == nil {
+			if y, err := lp.NewMetric("rocm_temp_vrsoc", dev.tags, dev.meta, value, timestamp); err == nil {
 				output <- y
 			}
 		}
 		if !dev.excludeMetrics["rocm_temp_vrmem"] {
 			value := metrics.Temperature_vrmem
-			y, err := lp.NewMessage("rocm_temp_vrmem", dev.tags, dev.meta, map[string]any{"value": value}, timestamp)
-			if err == nil {
+			if y, err := lp.NewMetric("rocm_temp_vrmem", dev.tags, dev.meta, value, timestamp); err == nil {
 				output <- y
 			}
 		}
 		if !dev.excludeMetrics["rocm_gfx_clock"] {
 			value := metrics.Average_gfxclk_frequency
-			y, err := lp.NewMessage("rocm_gfx_clock", dev.tags, dev.meta, map[string]any{"value": value}, timestamp)
-			if err == nil {
+			if y, err := lp.NewMetric("rocm_gfx_clock", dev.tags, dev.meta, value, timestamp); err == nil {
 				output <- y
 			}
 		}
 		if !dev.excludeMetrics["rocm_soc_clock"] {
 			value := metrics.Average_socclk_frequency
-			y, err := lp.NewMessage("rocm_soc_clock", dev.tags, dev.meta, map[string]any{"value": value}, timestamp)
-			if err == nil {
+			if y, err := lp.NewMetric("rocm_soc_clock", dev.tags, dev.meta, value, timestamp); err == nil {
 				output <- y
 			}
 		}
 		if !dev.excludeMetrics["rocm_u_clock"] {
 			value := metrics.Average_uclk_frequency
-			y, err := lp.NewMessage("rocm_u_clock", dev.tags, dev.meta, map[string]any{"value": value}, timestamp)
-			if err == nil {
+			if y, err := lp.NewMetric("rocm_u_clock", dev.tags, dev.meta, value, timestamp); err == nil {
 				output <- y
 			}
 		}
 		if !dev.excludeMetrics["rocm_v0_clock"] {
 			value := metrics.Average_vclk0_frequency
-			y, err := lp.NewMessage("rocm_v0_clock", dev.tags, dev.meta, map[string]any{"value": value}, timestamp)
-			if err == nil {
+			if y, err := lp.NewMetric("rocm_v0_clock", dev.tags, dev.meta, value, timestamp); err == nil {
 				output <- y
 			}
 		}
 		if !dev.excludeMetrics["rocm_v1_clock"] {
 			value := metrics.Average_vclk1_frequency
-			y, err := lp.NewMessage("rocm_v1_clock", dev.tags, dev.meta, map[string]any{"value": value}, timestamp)
-			if err == nil {
+			if y, err := lp.NewMetric("rocm_v1_clock", dev.tags, dev.meta, value, timestamp); err == nil {
 				output <- y
 			}
 		}
 		if !dev.excludeMetrics["rocm_d0_clock"] {
 			value := metrics.Average_dclk0_frequency
-			y, err := lp.NewMessage("rocm_d0_clock", dev.tags, dev.meta, map[string]any{"value": value}, timestamp)
-			if err == nil {
+			if y, err := lp.NewMetric("rocm_d0_clock", dev.tags, dev.meta, value, timestamp); err == nil {
 				output <- y
 			}
 		}
 		if !dev.excludeMetrics["rocm_d1_clock"] {
 			value := metrics.Average_dclk1_frequency
-			y, err := lp.NewMessage("rocm_d1_clock", dev.tags, dev.meta, map[string]any{"value": value}, timestamp)
-			if err == nil {
+			if y, err := lp.NewMetric("rocm_d1_clock", dev.tags, dev.meta, value, timestamp); err == nil {
 				output <- y
 			}
 		}
 		if !dev.excludeMetrics["rocm_temp_hbm"] {
 			for i := range rocm_smi.NUM_HBM_INSTANCES {
 				value := metrics.Temperature_hbm[i]
-				y, err := lp.NewMessage("rocm_temp_hbm", dev.tags, dev.meta, map[string]any{"value": value}, timestamp)
-				if err == nil {
+				if y, err := lp.NewMetric("rocm_temp_hbm", dev.tags, dev.meta, value, timestamp); err == nil {
 					y.AddTag("stype", "device")
 					y.AddTag("stype-id", strconv.Itoa(i))
 					output <- y
--- a/collectors/sampleMetric.go
+++ b/collectors/sampleMetric.go
@@ -8,11 +8,11 @@
 package collectors

 import (
+	"bytes"
 	"encoding/json"
 	"fmt"
 	"time"

-	cclog "github.com/ClusterCockpit/cc-lib/v2/ccLogger"
 	lp "github.com/ClusterCockpit/cc-lib/v2/ccMessage"
 )

@@ -52,7 +52,10 @@ func (m *SampleCollector) Init(config json.RawMessage) error {
 	m.parallel = true
 	// Define meta information sent with each metric
 	// (Can also be dynamic or this is the basic set with extension through AddMeta())
-	m.meta = map[string]string{"source": m.name, "group": "SAMPLE"}
+	m.meta = map[string]string{
+		"source": m.name,
+		"group":  "SAMPLE",
+	}
 	// Define tags sent with each metric
 	// The 'type' tag is always needed, it defines the granularity of the metric
 	// node -> whole system
@@ -63,13 +66,15 @@ func (m *SampleCollector) Init(config json.RawMessage) error {
 	// core -> single CPU core that may consist of multiple hardware threads (SMT) (requires core ID as 'type-id' tag)
 	// hwthtread -> single CPU hardware thread (requires hardware thread ID as 'type-id' tag)
 	// accelerator -> A accelerator device like GPU or FPGA (requires an accelerator ID as 'type-id' tag)
-	m.tags = map[string]string{"type": "node"}
+	m.tags = map[string]string{
+		"type": "node",
+	}
 	// Read in the JSON configuration
 	if len(config) > 0 {
-		err = json.Unmarshal(config, &m.config)
-		if err != nil {
-			cclog.ComponentError(m.name, "Error reading config:", err.Error())
-			return err
+		d := json.NewDecoder(bytes.NewReader(config))
+		d.DisallowUnknownFields()
+		if err := d.Decode(&m.config); err != nil {
+			return fmt.Errorf("%s Init(): Error decoding JSON config: %w", m.name, err)
 		}
 	}

@@ -96,7 +101,7 @@ func (m *SampleCollector) Read(interval time.Duration, output chan lp.CCMessage)
 	// stop := readState()
 	// value = (stop - start) / interval.Seconds()

-	y, err := lp.NewMessage("sample_metric", m.tags, m.meta, map[string]any{"value": value}, timestamp)
+	y, err := lp.NewMetric("sample_metric", m.tags, m.meta, value, timestamp)
 	if err == nil {
 		// Send it to output channel
 		output <- y
--- a/collectors/sampleTimerMetric.go
+++ b/collectors/sampleTimerMetric.go
@@ -8,6 +8,7 @@
 package collectors

 import (
+	"bytes"
 	"encoding/json"
 	"fmt"
 	"sync"
@@ -47,26 +48,30 @@ func (m *SampleTimerCollector) Init(name string, config json.RawMessage) error {
 	}
 	// Define meta information sent with each metric
 	// (Can also be dynamic or this is the basic set with extension through AddMeta())
-	m.meta = map[string]string{"source": m.name, "group": "SAMPLE"}
+	m.meta = map[string]string{
+		"source": m.name,
+		"group":  "SAMPLE",
+	}
 	// Define tags sent with each metric
 	// The 'type' tag is always needed, it defines the granularity of the metric
 	// node -> whole system
 	// socket -> CPU socket (requires socket ID as 'type-id' tag)
 	// cpu -> single CPU hardware thread (requires cpu ID as 'type-id' tag)
-	m.tags = map[string]string{"type": "node"}
+	m.tags = map[string]string{
+		"type": "node",
+	}
 	// Read in the JSON configuration
 	if len(config) > 0 {
-		err = json.Unmarshal(config, &m.config)
-		if err != nil {
-			cclog.ComponentError(m.name, "Error reading config:", err.Error())
-			return err
+		d := json.NewDecoder(bytes.NewReader(config))
+		d.DisallowUnknownFields()
+		if err := d.Decode(&m.config); err != nil {
+			return fmt.Errorf("%s Init(): error decoding JSON config: %w", m.name, err)
 		}
 	}
 	// Parse the read interval duration
 	m.interval, err = time.ParseDuration(m.config.Interval)
 	if err != nil {
-		cclog.ComponentError(m.name, "Error parsing interval:", err.Error())
-		return err
+		return fmt.Errorf("%s Init(): error parsing interval: %w", m.name, err)
 	}

 	// Storage for output channel
@@ -77,13 +82,11 @@ func (m *SampleTimerCollector) Init(name string, config json.RawMessage) error {
 	m.ticker = time.NewTicker(m.interval)

 	// Start the timer loop with return functionality by sending 'true' to the done channel
-	m.wg.Add(1)
-	go func() {
+	m.wg.Go(func() {
 		select {
 		case <-m.done:
 			// Exit the timer loop
 			cclog.ComponentDebug(m.name, "Closing...")
-			m.wg.Done()
 			return
 		case timestamp := <-m.ticker.C:
 			// This is executed every timer tick but we have to wait until the first
@@ -92,7 +95,7 @@ func (m *SampleTimerCollector) Init(name string, config json.RawMessage) error {
 				m.ReadMetrics(timestamp)
 			}
 		}
-	}()
+	})

 	// Set this flag only if everything is initialized properly, all required files exist, ...
 	m.init = true
@@ -111,7 +114,7 @@ func (m *SampleTimerCollector) ReadMetrics(timestamp time.Time) {
 	// stop := readState()
 	// value = (stop - start) / interval.Seconds()

-	y, err := lp.NewMessage("sample_metric", m.tags, m.meta, map[string]any{"value": value}, timestamp)
+	y, err := lp.NewMetric("sample_metric", m.tags, m.meta, value, timestamp)
 	if err == nil && m.output != nil {
 		// Send it to output channel if we have a valid channel
 		m.output <- y
--- a/collectors/schedstatMetric.go
+++ b/collectors/schedstatMetric.go
@@ -9,6 +9,7 @@ package collectors

 import (
 	"bufio"
+	"bytes"
 	"encoding/json"
 	"fmt"
 	"os"
@@ -66,8 +67,10 @@ func (m *SchedstatCollector) Init(config json.RawMessage) error {

 	// Read in the JSON configuration
 	if len(config) > 0 {
-		if err := json.Unmarshal(config, &m.config); err != nil {
-			return fmt.Errorf("%s Init(): Error reading config: %w", m.name, err)
+		d := json.NewDecoder(bytes.NewReader(config))
+		d.DisallowUnknownFields()
+		if err := d.Decode(&m.config); err != nil {
+			return fmt.Errorf("%s Init(): failed to decode JSON config: %w", m.name, err)
 		}
 	}

@@ -124,7 +127,7 @@ func (m *SchedstatCollector) ParseProcLine(linefields []string, tags map[string]
 	m.olddata[linefields[0]]["waiting"] = waiting
 	value := l_running + l_waiting

-	y, err := lp.NewMessage("cpu_load_core", tags, m.meta, map[string]any{"value": value}, now)
+	y, err := lp.NewMetric("cpu_load_core", tags, m.meta, value, now)
 	if err == nil {
 		// Send it to output channel
 		output <- y
--- a/collectors/selfMetric.go
+++ b/collectors/selfMetric.go
@@ -8,13 +8,13 @@
 package collectors

 import (
+	"bytes"
 	"encoding/json"
 	"fmt"
 	"runtime"
 	"syscall"
 	"time"

-	cclog "github.com/ClusterCockpit/cc-lib/v2/ccLogger"
 	lp "github.com/ClusterCockpit/cc-lib/v2/ccMessage"
 )

@@ -40,13 +40,18 @@ func (m *SelfCollector) Init(config json.RawMessage) error {
 		return fmt.Errorf("%s Init(): setup() call failed: %w", m.name, err)
 	}
 	m.parallel = true
-	m.meta = map[string]string{"source": m.name, "group": "Self"}
-	m.tags = map[string]string{"type": "node"}
+	m.meta = map[string]string{
+		"source": m.name,
+		"group":  "Self",
+	}
+	m.tags = map[string]string{
+		"type": "node",
+	}
 	if len(config) > 0 {
-		err = json.Unmarshal(config, &m.config)
-		if err != nil {
-			cclog.ComponentError(m.name, "Error reading config:", err.Error())
-			return err
+		d := json.NewDecoder(bytes.NewReader(config))
+		d.DisallowUnknownFields()
+		if err := d.Decode(&m.config); err != nil {
+			return fmt.Errorf("%s Init(): Error decoding JSON config: %w", m.name, err)
 		}
 	}
 	m.init = true
@@ -60,49 +65,49 @@ func (m *SelfCollector) Read(interval time.Duration, output chan lp.CCMessage) {
 		var memstats runtime.MemStats
 		runtime.ReadMemStats(&memstats)

-		y, err := lp.NewMessage("total_alloc", m.tags, m.meta, map[string]any{"value": memstats.TotalAlloc}, timestamp)
+		y, err := lp.NewMetric("total_alloc", m.tags, m.meta, memstats.TotalAlloc, timestamp)
 		if err == nil {
 			y.AddMeta("unit", "Bytes")
 			output <- y
 		}
-		y, err = lp.NewMessage("heap_alloc", m.tags, m.meta, map[string]any{"value": memstats.HeapAlloc}, timestamp)
+		y, err = lp.NewMetric("heap_alloc", m.tags, m.meta, memstats.HeapAlloc, timestamp)
 		if err == nil {
 			y.AddMeta("unit", "Bytes")
 			output <- y
 		}
-		y, err = lp.NewMessage("heap_sys", m.tags, m.meta, map[string]any{"value": memstats.HeapSys}, timestamp)
+		y, err = lp.NewMetric("heap_sys", m.tags, m.meta, memstats.HeapSys, timestamp)
 		if err == nil {
 			y.AddMeta("unit", "Bytes")
 			output <- y
 		}
-		y, err = lp.NewMessage("heap_idle", m.tags, m.meta, map[string]any{"value": memstats.HeapIdle}, timestamp)
+		y, err = lp.NewMetric("heap_idle", m.tags, m.meta, memstats.HeapIdle, timestamp)
 		if err == nil {
 			y.AddMeta("unit", "Bytes")
 			output <- y
 		}
-		y, err = lp.NewMessage("heap_inuse", m.tags, m.meta, map[string]any{"value": memstats.HeapInuse}, timestamp)
+		y, err = lp.NewMetric("heap_inuse", m.tags, m.meta, memstats.HeapInuse, timestamp)
 		if err == nil {
 			y.AddMeta("unit", "Bytes")
 			output <- y
 		}
-		y, err = lp.NewMessage("heap_released", m.tags, m.meta, map[string]any{"value": memstats.HeapReleased}, timestamp)
+		y, err = lp.NewMetric("heap_released", m.tags, m.meta, memstats.HeapReleased, timestamp)
 		if err == nil {
 			y.AddMeta("unit", "Bytes")
 			output <- y
 		}
-		y, err = lp.NewMessage("heap_objects", m.tags, m.meta, map[string]any{"value": memstats.HeapObjects}, timestamp)
+		y, err = lp.NewMetric("heap_objects", m.tags, m.meta, memstats.HeapObjects, timestamp)
 		if err == nil {
 			output <- y
 		}
 	}
 	if m.config.GoRoutines {
-		y, err := lp.NewMessage("num_goroutines", m.tags, m.meta, map[string]any{"value": runtime.NumGoroutine()}, timestamp)
+		y, err := lp.NewMetric("num_goroutines", m.tags, m.meta, runtime.NumGoroutine(), timestamp)
 		if err == nil {
 			output <- y
 		}
 	}
 	if m.config.CgoCalls {
-		y, err := lp.NewMessage("num_cgo_calls", m.tags, m.meta, map[string]any{"value": runtime.NumCgoCall()}, timestamp)
+		y, err := lp.NewMetric("num_cgo_calls", m.tags, m.meta, runtime.NumCgoCall(), timestamp)
 		if err == nil {
 			output <- y
 		}
@@ -113,35 +118,35 @@ func (m *SelfCollector) Read(interval time.Duration, output chan lp.CCMessage) {
 		if err == nil {
 			sec, nsec := rusage.Utime.Unix()
 			t := float64(sec) + (float64(nsec) * 1e-9)
-			y, err := lp.NewMessage("rusage_user_time", m.tags, m.meta, map[string]any{"value": t}, timestamp)
+			y, err := lp.NewMetric("rusage_user_time", m.tags, m.meta, t, timestamp)
 			if err == nil {
 				y.AddMeta("unit", "seconds")
 				output <- y
 			}
 			sec, nsec = rusage.Stime.Unix()
 			t = float64(sec) + (float64(nsec) * 1e-9)
-			y, err = lp.NewMessage("rusage_system_time", m.tags, m.meta, map[string]any{"value": t}, timestamp)
+			y, err = lp.NewMetric("rusage_system_time", m.tags, m.meta, t, timestamp)
 			if err == nil {
 				y.AddMeta("unit", "seconds")
 				output <- y
 			}
-			y, err = lp.NewMessage("rusage_vol_ctx_switch", m.tags, m.meta, map[string]any{"value": rusage.Nvcsw}, timestamp)
+			y, err = lp.NewMetric("rusage_vol_ctx_switch", m.tags, m.meta, rusage.Nvcsw, timestamp)
 			if err == nil {
 				output <- y
 			}
-			y, err = lp.NewMessage("rusage_invol_ctx_switch", m.tags, m.meta, map[string]any{"value": rusage.Nivcsw}, timestamp)
+			y, err = lp.NewMetric("rusage_invol_ctx_switch", m.tags, m.meta, rusage.Nivcsw, timestamp)
 			if err == nil {
 				output <- y
 			}
-			y, err = lp.NewMessage("rusage_signals", m.tags, m.meta, map[string]any{"value": rusage.Nsignals}, timestamp)
+			y, err = lp.NewMetric("rusage_signals", m.tags, m.meta, rusage.Nsignals, timestamp)
 			if err == nil {
 				output <- y
 			}
-			y, err = lp.NewMessage("rusage_major_pgfaults", m.tags, m.meta, map[string]any{"value": rusage.Majflt}, timestamp)
+			y, err = lp.NewMetric("rusage_major_pgfaults", m.tags, m.meta, rusage.Majflt, timestamp)
 			if err == nil {
 				output <- y
 			}
-			y, err = lp.NewMessage("rusage_minor_pgfaults", m.tags, m.meta, map[string]any{"value": rusage.Minflt}, timestamp)
+			y, err = lp.NewMetric("rusage_minor_pgfaults", m.tags, m.meta, rusage.Minflt, timestamp)
 			if err == nil {
 				output <- y
 			}
--- a/collectors/slurmCgroupMetric.go
+++ b/collectors/slurmCgroupMetric.go
@@ -119,8 +119,9 @@ func (m *SlurmCgroupCollector) Init(config json.RawMessage) error {
 	m.cgroupBase = defaultCgroupBase

 	if len(config) > 0 {
-		err = json.Unmarshal(config, &m.config)
-		if err != nil {
+		d := json.NewDecoder(strings.NewReader(string(config)))
+		d.DisallowUnknownFields()
+		if err = d.Decode(&m.config); err != nil {
 			return fmt.Errorf("%s Init(): Error reading JSON config: %w", m.name, err)
 		}
 		m.excludeMetrics = make(map[string]struct{})
--- a/collectors/smartmonMetric.go
+++ b/collectors/smartmonMetric.go
@@ -0,0 +1,360 @@
+package collectors
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"os/exec"
+	"slices"
+	"time"
+
+	cclog "github.com/ClusterCockpit/cc-lib/v2/ccLogger"
+	lp "github.com/ClusterCockpit/cc-lib/v2/ccMessage"
+)
+
+type SmartMonCollectorConfig struct {
+	UseSudo        bool     `json:"use_sudo,omitempty"`
+	ExcludeDevices []string `json:"exclude_devices,omitempty"`
+	ExcludeMetrics []string `json:"excludeMetrics,omitempty"`
+	Devices        []struct {
+		Name string `json:"name"`
+		Type string `json:"type"`
+	} `json:"devices,omitempty"`
+}
+
+type deviceT struct {
+	Name         string `json:"name"`
+	Type         string `json:"type"`
+	queryCommand []string
+}
+
+type SmartMonCollector struct {
+	metricCollector
+	config        SmartMonCollectorConfig // the configuration structure
+	meta          map[string]string       // default meta information
+	tags          map[string]string       // default tags
+	devices       []deviceT               // smartmon devices
+	sudoCmd       string                  // Full path to 'sudo' command
+	smartCtlCmd   string                  // Full path to 'smartctl' command
+	excludeMetric struct {
+		temp,
+		percentUsed,
+		availSpare,
+		dataUnitsRead,
+		dataUnitsWrite,
+		hostReads,
+		hostWrites,
+		powerCycles,
+		powerOn,
+		UnsafeShutdowns,
+		mediaErrors,
+		errlogEntries,
+		warnTempTime,
+		critCompTime bool
+	}
+}
+
+func (m *SmartMonCollector) getSmartmonDevices() error {
+	// Use configured devices
+	if len(m.config.Devices) > 0 {
+		for _, configDevice := range m.config.Devices {
+			if !slices.Contains(m.config.ExcludeDevices, configDevice.Name) {
+				d := deviceT{
+					Name: configDevice.Name,
+					Type: configDevice.Type,
+				}
+				if m.config.UseSudo {
+					d.queryCommand = append(d.queryCommand, m.sudoCmd)
+				}
+				d.queryCommand = append(d.queryCommand, m.smartCtlCmd, "--json=c", "--device="+d.Type, "--all", d.Name)
+
+				m.devices = append(m.devices, d)
+			}
+		}
+		return nil
+	}
+
+	// Use scan command
+	var scanCmd []string
+	if m.config.UseSudo {
+		scanCmd = append(scanCmd, m.sudoCmd)
+	}
+	scanCmd = append(scanCmd, m.smartCtlCmd, "--scan", "--json=c")
+	command := exec.Command(scanCmd[0], scanCmd[1:]...)
+
+	stdout, err := command.Output()
+	if err != nil {
+		return fmt.Errorf(
+			"%s getSmartmonDevices(): Failed to execute device scan command %s: %w",
+			m.name, command.String(), err)
+	}
+
+	var scanOutput struct {
+		Devices []deviceT `json:"devices"`
+	}
+	err = json.Unmarshal(stdout, &scanOutput)
+	if err != nil {
+		return fmt.Errorf("%s getSmartmonDevices(): Failed to parse JSON output from device scan command: %w",
+			m.name, err)
+	}
+
+	m.devices = make([]deviceT, 0)
+	for _, d := range scanOutput.Devices {
+		if !slices.Contains(m.config.ExcludeDevices, d.Name) {
+			if m.config.UseSudo {
+				d.queryCommand = append(d.queryCommand, m.sudoCmd)
+			}
+			d.queryCommand = append(d.queryCommand, m.smartCtlCmd, "--json=c", "--device="+d.Type, "--all", d.Name)
+
+			m.devices = append(m.devices, d)
+		}
+	}
+
+	return nil
+}
+
+func (m *SmartMonCollector) Init(config json.RawMessage) error {
+	m.name = "SmartMonCollector"
+	if err := m.setup(); err != nil {
+		return fmt.Errorf("%s Init(): setup() call failed: %w", m.name, err)
+	}
+	m.parallel = true
+	m.meta = map[string]string{
+		"source": m.name,
+		"group":  "Disk",
+	}
+	m.tags = map[string]string{
+		"type":  "node",
+		"stype": "disk",
+	}
+
+	// Read in the JSON configuration
+	if len(config) > 0 {
+		d := json.NewDecoder(bytes.NewReader(config))
+		d.DisallowUnknownFields()
+		if err := d.Decode(&m.config); err != nil {
+			return fmt.Errorf("%s Init(): Error reading config: %w", m.name, err)
+		}
+	}
+	for _, excludeMetric := range m.config.ExcludeMetrics {
+		switch excludeMetric {
+		case "smartmon_temp":
+			m.excludeMetric.temp = true
+		case "smartmon_percent_used":
+			m.excludeMetric.percentUsed = true
+		case "smartmon_avail_spare":
+			m.excludeMetric.availSpare = true
+		case "smartmon_data_units_read":
+			m.excludeMetric.dataUnitsRead = true
+		case "smartmon_data_units_write":
+			m.excludeMetric.dataUnitsWrite = true
+		case "smartmon_host_reads":
+			m.excludeMetric.hostReads = true
+		case "smartmon_host_writes":
+			m.excludeMetric.hostWrites = true
+		case "smartmon_power_cycles":
+			m.excludeMetric.powerCycles = true
+		case "smartmon_power_on":
+			m.excludeMetric.powerOn = true
+		case "smartmon_unsafe_shutdowns":
+			m.excludeMetric.UnsafeShutdowns = true
+		case "smartmon_media_errors":
+			m.excludeMetric.mediaErrors = true
+		case "smartmon_errlog_entries":
+			m.excludeMetric.errlogEntries = true
+		case "smartmon_warn_temp_time":
+			m.excludeMetric.warnTempTime = true
+		case "smartmon_crit_comp_time":
+			m.excludeMetric.critCompTime = true
+		default:
+			return fmt.Errorf("%s Init(): Unknown excluded metric: %s", m.name, excludeMetric)
+		}
+
+	}
+
+	// Check if sudo and smartctl are in search path
+	if m.config.UseSudo {
+		p, err := exec.LookPath("sudo")
+		if err != nil {
+			return fmt.Errorf("%s Init(): No sudo command found in search path: %w", m.name, err)
+		}
+		m.sudoCmd = p
+	}
+	p, err := exec.LookPath("smartctl")
+	if err != nil {
+		return fmt.Errorf("%s Init(): No smartctl command found in search path: %w", m.name, err)
+	}
+	m.smartCtlCmd = p
+
+	if err = m.getSmartmonDevices(); err != nil {
+		return err
+	}
+
+	m.init = true
+	return err
+}
+
+type SmartMonData struct {
+	SerialNumber string `json:"serial_number"`
+	UserCapacity struct {
+		Blocks int `json:"blocks"`
+		Bytes  int `json:"bytes"`
+	} `json:"user_capacity"`
+	HealthLog struct {
+		// Available SMART health information:
+		// sudo smartctl -a --json=c /dev/nvme0 | jq --color-output | less --RAW-CONTROL-CHARS
+		Temperature        int `json:"temperature"`
+		PercentageUsed     int `json:"percentage_used"`
+		AvailableSpare     int `json:"available_spare"`
+		DataUnitsRead      int `json:"data_units_read"`
+		DataUnitsWrite     int `json:"data_units_written"`
+		HostReads          int `json:"host_reads"`
+		HostWrites         int `json:"host_writes"`
+		PowerCycles        int `json:"power_cycles"`
+		PowerOnHours       int `json:"power_on_hours"`
+		UnsafeShutdowns    int `json:"unsafe_shutdowns"`
+		MediaErrors        int `json:"media_errors"`
+		NumErrorLogEntries int `json:"num_err_log_entries"`
+		WarnTempTime       int `json:"warning_temp_time"`
+		CriticalCompTime   int `json:"critical_comp_time"`
+	} `json:"nvme_smart_health_information_log"`
+}
+
+func (m *SmartMonCollector) Read(interval time.Duration, output chan lp.CCMessage) {
+	timestamp := time.Now()
+	for _, d := range m.devices {
+		var data SmartMonData
+		command := exec.Command(d.queryCommand[0], d.queryCommand[1:]...)
+
+		stdout, err := command.Output()
+		if err != nil {
+			cclog.ComponentError(m.name, "cannot read data for device", d.Name)
+			continue
+		}
+		err = json.Unmarshal(stdout, &data)
+		if err != nil {
+			cclog.ComponentError(m.name, "cannot unmarshal data for device", d.Name)
+			continue
+		}
+		if !m.excludeMetric.temp {
+			y, err := lp.NewMetric(
+				"smartmon_temp", m.tags, m.meta, data.HealthLog.Temperature, timestamp)
+			if err == nil {
+				y.AddTag("stype-id", d.Name)
+				y.AddMeta("unit", "degC")
+				output <- y
+			}
+		}
+		if !m.excludeMetric.percentUsed {
+			y, err := lp.NewMetric(
+				"smartmon_percent_used", m.tags, m.meta, data.HealthLog.PercentageUsed, timestamp)
+			if err == nil {
+				y.AddTag("stype-id", d.Name)
+				y.AddMeta("unit", "percent")
+				output <- y
+			}
+		}
+		if !m.excludeMetric.availSpare {
+			y, err := lp.NewMetric(
+				"smartmon_avail_spare", m.tags, m.meta, data.HealthLog.AvailableSpare, timestamp)
+			if err == nil {
+				y.AddTag("stype-id", d.Name)
+				y.AddMeta("unit", "percent")
+				output <- y
+			}
+		}
+		if !m.excludeMetric.dataUnitsRead {
+			y, err := lp.NewMetric(
+				"smartmon_data_units_read", m.tags, m.meta, data.HealthLog.DataUnitsRead, timestamp)
+			if err == nil {
+				y.AddTag("stype-id", d.Name)
+				output <- y
+			}
+		}
+		if !m.excludeMetric.dataUnitsWrite {
+			y, err := lp.NewMetric(
+				"smartmon_data_units_write", m.tags, m.meta, data.HealthLog.DataUnitsWrite, timestamp)
+			if err == nil {
+				y.AddTag("stype-id", d.Name)
+				output <- y
+			}
+		}
+		if !m.excludeMetric.hostReads {
+			y, err := lp.NewMetric(
+				"smartmon_host_reads", m.tags, m.meta, data.HealthLog.HostReads, timestamp)
+			if err == nil {
+				y.AddTag("stype-id", d.Name)
+				output <- y
+			}
+		}
+		if !m.excludeMetric.hostWrites {
+			y, err := lp.NewMetric(
+				"smartmon_host_writes", m.tags, m.meta, data.HealthLog.HostWrites, timestamp)
+			if err == nil {
+				y.AddTag("stype-id", d.Name)
+				output <- y
+			}
+		}
+		if !m.excludeMetric.powerCycles {
+			y, err := lp.NewMetric(
+				"smartmon_power_cycles", m.tags, m.meta, data.HealthLog.PowerCycles, timestamp)
+			if err == nil {
+				y.AddTag("stype-id", d.Name)
+				output <- y
+			}
+		}
+		if !m.excludeMetric.powerOn {
+			y, err := lp.NewMetric(
+				"smartmon_power_on", m.tags, m.meta, int64(data.HealthLog.PowerOnHours)*3600, timestamp)
+			if err == nil {
+				y.AddTag("stype-id", d.Name)
+				y.AddMeta("unit", "sec")
+				output <- y
+			}
+		}
+		if !m.excludeMetric.UnsafeShutdowns {
+			y, err := lp.NewMetric(
+				"smartmon_unsafe_shutdowns", m.tags, m.meta, data.HealthLog.UnsafeShutdowns, timestamp)
+			if err == nil {
+				y.AddTag("stype-id", d.Name)
+				output <- y
+			}
+		}
+		if !m.excludeMetric.mediaErrors {
+			y, err := lp.NewMetric(
+				"smartmon_media_errors", m.tags, m.meta, data.HealthLog.MediaErrors, timestamp)
+			if err == nil {
+				y.AddTag("stype-id", d.Name)
+				output <- y
+			}
+		}
+		if !m.excludeMetric.errlogEntries {
+			y, err := lp.NewMetric(
+				"smartmon_errlog_entries", m.tags, m.meta, data.HealthLog.NumErrorLogEntries, timestamp)
+			if err == nil {
+				y.AddTag("stype-id", d.Name)
+				output <- y
+			}
+		}
+		if !m.excludeMetric.warnTempTime {
+			y, err := lp.NewMetric(
+				"smartmon_warn_temp_time", m.tags, m.meta, data.HealthLog.WarnTempTime, timestamp)
+			if err == nil {
+				y.AddTag("stype-id", d.Name)
+				output <- y
+			}
+		}
+		if !m.excludeMetric.critCompTime {
+			y, err := lp.NewMetric(
+				"smartmon_crit_comp_time", m.tags, m.meta, data.HealthLog.CriticalCompTime, timestamp)
+			if err == nil {
+				y.AddTag("stype-id", d.Name)
+				output <- y
+			}
+		}
+	}
+}
+
+func (m *SmartMonCollector) Close() {
+	m.init = false
+}
--- a/collectors/smartmonMetric.md
+++ b/collectors/smartmonMetric.md
@@ -0,0 +1,67 @@
+<!--
+---
+title: smartmon metric collector
+description: Collect S.M.A.R.T data from NVMEs
+categories: [cc-metric-collector]
+tags: ['Admin']
+weight: 2
+hugo_path: docs/reference/cc-metric-collector/collectors/smartmonMetric.md
+---
+-->
+
+## `smartmon` collector
+
+```json
+  "smartmon": {
+    "use_sudo": true,
+    "exclude_devices": [
+      "/dev/sda"
+    ],
+    "excludeMetrics": [
+      "smartmon_warn_temp_time",
+      "smartmon_crit_comp_time"
+    ],
+    "devices": [
+      {
+        "name": "/dev/nvme0",
+        "type": "nvme"
+      }
+    ]
+  }
+```
+
+The `smartmon` collector retrieves S.M.A.R.T data from NVMEs via command `smartctl`.
+
+Available NVMEs can be either automatically detected by a device scan or manually added with the "devices" config option.
+
+Metrics:
+
+* `smartmon_temp`: Temperature of the device (`unit=degC`)
+* `smartmon_avail_spare`: Amount of spare left (`unit=percent`)
+* `smartmon_percent_used`: Percentage of the device is used (`unit=percent`)
+* `smartmon_data_units_read`: Read data units
+* `smartmon_data_units_write`: Written data units
+* `smartmon_host_reads`: Read operations
+* `smartmon_host_writes`: Write operations
+* `smartmon_power_cycles`: Number of power cycles
+* `smartmon_power_on`: Seconds the device is powered on (`unit=seconds`)
+* `smartmon_unsafe_shutdowns`: Count of unsafe shutdowns
+* `smartmon_media_errors`: Media errors of the device
+* `smartmon_errlog_entries`: Error log entries
+* `smartmon_warn_temp_time`: Time above the warning temperature threshold
+* `smartmon_crit_comp_time`: Time above the critical composite temperature threshold
+
+`smartctl` typically require root to run.
+In order to run `cc-metric-collector` without root priviliges, you can enable `use_sudo`.
+Add a file like this in `/etc/sudoers.d/` to allow `cc-metric-collector` to run the required command:
+
+```
+# Do not log the following sudo commands from monitoring, since this causes a lot of log spam.
+# However keep log_denied enabled, to detect failures
+Defaults: monitoring !log_allowed, !pam_session
+
+# Allow to use lctl
+monitoring ALL = (root) NOPASSWD:/absolute/path/to/smartctl --json=c --device=* "--all" *
+# Or add individual rules for each device
+# monitoring ALL = (root) NOPASSWD:/absolute/path/to/smartctl --json=c --device=<device_type> "--all" <device>
+```
--- a/collectors/tempMetric.go
+++ b/collectors/tempMetric.go
@@ -8,6 +8,7 @@
 package collectors

 import (
+	"bytes"
 	"encoding/json"
 	"fmt"
 	"os"
@@ -63,9 +64,10 @@ func (m *TempCollector) Init(config json.RawMessage) error {
 		return fmt.Errorf("%s Init(): setup() call failed: %w", m.name, err)
 	}
 	if len(config) > 0 {
-		err := json.Unmarshal(config, &m.config)
-		if err != nil {
-			return fmt.Errorf("%s Init(): failed to unmarshal JSON config: %w", m.name, err)
+		d := json.NewDecoder(bytes.NewReader(config))
+		d.DisallowUnknownFields()
+		if err := d.Decode(&m.config); err != nil {
+			return fmt.Errorf("%s Init(): Error decoding JSON config: %w", m.name, err)
 		}
 	}

@@ -199,26 +201,14 @@ func (m *TempCollector) Read(interval time.Duration, output chan lp.CCMessage) {
 			continue
 		}
 		x /= 1000
-		y, err := lp.NewMessage(
-			sensor.metricName,
-			sensor.tags,
-			m.meta,
-			map[string]any{"value": x},
-			time.Now(),
-		)
+		y, err := lp.NewMetric(sensor.metricName, sensor.tags, m.meta, x, time.Now())
 		if err == nil {
 			output <- y
 		}

 		// max temperature
 		if m.config.ReportMaxTemp && sensor.maxTemp != 0 {
-			y, err := lp.NewMessage(
-				sensor.maxTempName,
-				sensor.tags,
-				m.meta,
-				map[string]any{"value": sensor.maxTemp},
-				time.Now(),
-			)
+			y, err := lp.NewMetric(sensor.maxTempName, sensor.tags, m.meta, sensor.maxTemp, time.Now())
 			if err == nil {
 				output <- y
 			}
@@ -226,13 +216,7 @@ func (m *TempCollector) Read(interval time.Duration, output chan lp.CCMessage) {

 		// critical temperature
 		if m.config.ReportCriticalTemp && sensor.critTemp != 0 {
-			y, err := lp.NewMessage(
-				sensor.critTempName,
-				sensor.tags,
-				m.meta,
-				map[string]any{"value": sensor.critTemp},
-				time.Now(),
-			)
+			y, err := lp.NewMetric(sensor.critTempName, sensor.tags, m.meta, sensor.critTemp, time.Now())
 			if err == nil {
 				output <- y
 			}
--- a/collectors/tempMetric.md
+++ b/collectors/tempMetric.md
@@ -14,10 +14,10 @@ hugo_path: docs/reference/cc-metric-collector/collectors/temp.md

 ```json
  "tempstat": {
-    "tag_override" : {
-        "<device like hwmon1>" : {
-            "type" : "socket",
-            "type-id" : "0"
+    "tag_override": {
+        "<device like hwmon1>": {
+            "type": "socket",
+            "type-id": "0"
        }
    },
    "exclude_metrics": [
--- a/collectors/topprocsMetric.go
+++ b/collectors/topprocsMetric.go
@@ -8,6 +8,7 @@
 package collectors

 import (
+	"bytes"
 	"encoding/json"
 	"fmt"
 	"os/exec"
@@ -46,9 +47,10 @@ func (m *TopProcsCollector) Init(config json.RawMessage) error {
 		"group":  "TopProcs",
 	}
 	if len(config) > 0 {
-		err = json.Unmarshal(config, &m.config)
-		if err != nil {
-			return fmt.Errorf("%s Init(): json.Unmarshal() failed: %w", m.name, err)
+		d := json.NewDecoder(bytes.NewReader(config))
+		d.DisallowUnknownFields()
+		if err := d.Decode(&m.config); err != nil {
+			return fmt.Errorf("%s Init(): Error decoding JSON config: %w", m.name, err)
 		}
 	} else {
 		m.config.Num_procs = int(DEFAULT_NUM_PROCS)
@@ -84,15 +86,7 @@ func (m *TopProcsCollector) Read(interval time.Duration, output chan lp.CCMessag
 	lines := strings.Split(string(stdout), "\n")
 	for i := 1; i < m.config.Num_procs+1; i++ {
 		name := fmt.Sprintf("topproc%d", i)
-		y, err := lp.NewMessage(
-			name,
-			m.tags,
-			m.meta,
-			map[string]any{
-				"value": lines[i],
-			},
-			time.Now())
-		if err == nil {
+		if y, err := lp.NewMetric(name, m.tags, m.meta, lines[i], time.Now()); err == nil {
 			output <- y
 		}
 	}
--- a/example-configs/collectors.json
+++ b/example-configs/collectors.json
@@ -34,8 +34,8 @@
    },
    "numastats": {},
    "nvidia": {},
-    "schedstat": {
-    },
+    "schedstat": {},
+    "smartmon": {},
    "tempstat": {
        "report_max_temperature": true,
        "report_critical_temperature": true,
--- a/example-configs/router.json
+++ b/example-configs/router.json
@@ -1,6 +1,6 @@
 {
    "process_messages" : {
-        "add_tag_if": [
+        "add_tags_if": [
            {
                "key" : "cluster",
                "value" : "testcluster",
@@ -12,7 +12,7 @@
                "if" : "name == 'temp_package_id_0'"
            }
        ],
-        "delete_tag_if": [
+        "delete_meta_if": [
            {
                "key" : "unit",
                "if" : "true"
--- a/go.mod
+++ b/go.mod
@@ -3,14 +3,14 @@ module github.com/ClusterCockpit/cc-metric-collector
 go 1.25.0

 require (
-	github.com/ClusterCockpit/cc-lib/v2 v2.7.0
-	github.com/ClusterCockpit/go-rocm-smi v0.3.0
+	github.com/ClusterCockpit/cc-lib/v2 v2.12.0
+	github.com/ClusterCockpit/go-rocm-smi v0.4.0
 	github.com/NVIDIA/go-nvml v0.13.0-1
 	github.com/PaesslerAG/gval v1.2.4
-	github.com/fsnotify/fsnotify v1.9.0
+	github.com/fsnotify/fsnotify v1.10.1
 	github.com/tklauser/go-sysconf v0.3.16
 	golang.design/x/thread v0.0.0-20210122121316-335e9adffdf1
-	golang.org/x/sys v0.41.0
+	golang.org/x/sys v0.43.0
 )

 require (
@@ -18,28 +18,29 @@ require (
 	github.com/apapsch/go-jsonmerge/v2 v2.0.0 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect
+	github.com/coder/websocket v1.8.14 // indirect
 	github.com/expr-lang/expr v1.17.8 // indirect
 	github.com/google/uuid v1.6.0 // indirect
 	github.com/gorilla/mux v1.8.1 // indirect
 	github.com/influxdata/influxdb-client-go/v2 v2.14.0 // indirect
 	github.com/influxdata/line-protocol v0.0.0-20210922203350-b1ad95c89adf // indirect
-	github.com/klauspost/compress v1.18.4 // indirect
+	github.com/klauspost/compress v1.18.5 // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
-	github.com/nats-io/nats.go v1.49.0 // indirect
+	github.com/nats-io/nats.go v1.51.0 // indirect
 	github.com/nats-io/nkeys v0.4.15 // indirect
 	github.com/nats-io/nuid v1.0.1 // indirect
-	github.com/oapi-codegen/runtime v1.2.0 // indirect
+	github.com/oapi-codegen/runtime v1.4.0 // indirect
 	github.com/prometheus/client_golang v1.23.2 // indirect
 	github.com/prometheus/client_model v0.6.2 // indirect
 	github.com/prometheus/common v0.67.5 // indirect
-	github.com/prometheus/procfs v0.20.0 // indirect
+	github.com/prometheus/procfs v0.20.1 // indirect
+	github.com/questdb/go-questdb-client/v4 v4.2.0 // indirect
 	github.com/santhosh-tekuri/jsonschema/v5 v5.3.1 // indirect
 	github.com/shopspring/decimal v1.4.0 // indirect
-	github.com/stmcginnis/gofish v0.21.3 // indirect
+	github.com/stmcginnis/gofish v0.21.6 // indirect
 	github.com/tklauser/numcpus v0.11.0 // indirect
-	go.yaml.in/yaml/v2 v2.4.3 // indirect
-	golang.org/x/crypto v0.48.0 // indirect
-	golang.org/x/exp v0.0.0-20260218203240-3dfff04db8fa // indirect
-	golang.org/x/net v0.51.0 // indirect
+	go.yaml.in/yaml/v2 v2.4.4 // indirect
+	golang.org/x/crypto v0.50.0 // indirect
+	golang.org/x/net v0.53.0 // indirect
 	google.golang.org/protobuf v1.36.11 // indirect
 )
--- a/go.sum
+++ b/go.sum
@@ -1,10 +1,17 @@
-github.com/ClusterCockpit/cc-lib/v2 v2.7.0 h1:EMTShk6rMTR1wlfmQ8SVCawH1OdltUbD3kVQmaW+5pE=
-github.com/ClusterCockpit/cc-lib/v2 v2.7.0/go.mod h1:0Etx8WMs0lYZ4tiOQizY18CQop+2i3WROvU9rMUxHA4=
+dario.cat/mergo v1.0.0 h1:AGCNq9Evsj31mOgNPcLyXc+4PNABt905YmuqPYYpBWk=
+dario.cat/mergo v1.0.0/go.mod h1:uNxQE+84aUszobStD9th8a29P2fMDhsBdgRYvZOxGmk=
+github.com/Azure/go-ansiterm v0.0.0-20230124172434-306776ec8161 h1:L/gRVlceqvL25UVaW/CKtUDjefjrs0SPonmDGUVOYP0=
+github.com/Azure/go-ansiterm v0.0.0-20230124172434-306776ec8161/go.mod h1:xomTg63KZ2rFqZQzSB4Vz2SUXa1BpHTVz9L5PTmPC4E=
+github.com/ClusterCockpit/cc-lib/v2 v2.12.0 h1:ZbGD68nDniuvzFjJCdyYawpCBrabdSyWOg5FFSyFbjQ=
+github.com/ClusterCockpit/cc-lib/v2 v2.12.0/go.mod h1:ml8xtcYa5WhPM7JDQ+M9/R9ZBxITCR/5xqGJ//GxXJI=
 github.com/ClusterCockpit/cc-line-protocol/v2 v2.4.0 h1:hIzxgTBWcmCIHtoDKDkSCsKCOCOwUC34sFsbD2wcW0Q=
 github.com/ClusterCockpit/cc-line-protocol/v2 v2.4.0/go.mod h1:y42qUu+YFmu5fdNuUAS4VbbIKxVjxCvbVqFdpdh8ahY=
-github.com/ClusterCockpit/go-rocm-smi v0.3.0 h1:1qZnSpG7/NyLtc7AjqnUL9Jb8xtqG1nMVgp69rJfaR8=
-github.com/ClusterCockpit/go-rocm-smi v0.3.0/go.mod h1:+I3UMeX3OlizXDf1WpGD43W4KGZZGVSGmny6rTeOnWA=
-github.com/NVIDIA/go-nvml v0.11.6-0/go.mod h1:hy7HYeQy335x6nEss0Ne3PYqleRa6Ct+VKD9RQ4nyFs=
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 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
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 github.com/tklauser/go-sysconf v0.3.16/go.mod h1:/qNL9xxDhc7tx3HSRsLWNnuzbVfh3e7gh/BmM179nYI=
 github.com/tklauser/numcpus v0.11.0 h1:nSTwhKH5e1dMNsCdVBukSZrURJRoHbSEQjdEbY+9RXw=
 github.com/tklauser/numcpus v0.11.0/go.mod h1:z+LwcLq54uWZTX0u/bGobaV34u6V7KNlTZejzM6/3MQ=
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 go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto=
 go.uber.org/goleak v1.3.0/go.mod h1:CoHD4mav9JJNrW/WLlf7HGZPjdw8EucARQHekz1X6bE=
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-golang.org/x/crypto v0.48.0/go.mod h1:r0kV5h3qnFPlQnBSrULhlsRfryS2pmewsg+XfMgkVos=
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-golang.org/x/net v0.51.0/go.mod h1:aamm+2QF5ogm02fjy5Bb7CQ0WMt1/WVM7FtyaTLlA9Y=
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--- a/internal/metricAggregator/metricAggregator.go
+++ b/internal/metricAggregator/metricAggregator.go
@@ -94,8 +94,7 @@ func (c *metricAggregator) Init(output chan lp.CCMessage) error {
 	// Set hostname
 	hostname, err := os.Hostname()
 	if err != nil {
-		cclog.Error(err.Error())
-		return err
+		return fmt.Errorf("metricAggregator: failed to get hostname: %w", err)
 	}
 	// Drop domain part of host name
 	c.constants["hostname"] = strings.SplitN(hostname, `.`, 2)[0]
--- a/internal/metricRouter/metricCache.go
+++ b/internal/metricRouter/metricCache.go
@@ -8,6 +8,7 @@
 package metricRouter

 import (
+	"fmt"
 	"sync"
 	"time"

@@ -70,8 +71,7 @@ func (c *metricCache) Init(output chan lp.CCMessage, ticker mct.MultiChanTicker,
 	// The code is executed by the MetricCache goroutine
 	c.aggEngine, err = agg.NewAggregator(c.output)
 	if err != nil {
-		cclog.ComponentError("MetricCache", "Cannot create aggregator")
-		return err
+		return fmt.Errorf("MetricCache: failed to create aggregator: %w", err)
 	}

 	return nil
--- a/internal/metricRouter/metricRouter.go
+++ b/internal/metricRouter/metricRouter.go
@@ -8,6 +8,7 @@
 package metricRouter

 import (
+	"bytes"
 	"encoding/json"
 	"fmt"
 	"maps"
@@ -46,8 +47,7 @@ type metricRouterConfig struct {
 	MaxForward        int                                  `json:"max_forward"`         // Number of maximal forwarded metrics at one select
 	NormalizeUnits    bool                                 `json:"normalize_units"`     // Check unit meta flag and normalize it using cc-units
 	ChangeUnitPrefix  map[string]string                    `json:"change_unit_prefix"`  // Add prefix that should be applied to the metrics
-	// dropMetrics       map[string]bool                      // Internal map for O(1) lookup
-	MessageProcessor json.RawMessage `json:"process_messages,omitempty"`
+	MessageProcessor  json.RawMessage                      `json:"process_messages,omitempty"`
 }

 // Metric router data structure
@@ -102,18 +102,17 @@ func (r *metricRouter) Init(ticker mct.MultiChanTicker, wg *sync.WaitGroup, rout
 	// Drop domain part of host name
 	r.hostname = strings.SplitN(hostname, `.`, 2)[0]

-	err = json.Unmarshal(routerConfig, &r.config)
-	if err != nil {
-		cclog.ComponentError("MetricRouter", err.Error())
-		return err
+	d := json.NewDecoder(bytes.NewReader(routerConfig))
+	d.DisallowUnknownFields()
+	if err := d.Decode(&r.config); err != nil {
+		return fmt.Errorf("failed to decode metric router config: %w", err)
 	}
 	r.maxForward = max(1, r.config.MaxForward)

 	if r.config.NumCacheIntervals > 0 {
 		r.cache, err = NewCache(r.cache_input, r.ticker, &r.cachewg, r.config.NumCacheIntervals)
 		if err != nil {
-			cclog.ComponentError("MetricRouter", "MetricCache initialization failed:", err.Error())
-			return err
+			return fmt.Errorf("MetricRouter: failed to initialize MetricCache: %w", err)
 		}
 		for _, agg := range r.config.IntervalAgg {
 			err = r.cache.AddAggregation(agg.Name, agg.Function, agg.Condition, agg.Tags, agg.Meta)
--- a/scripts/cc-metric-collector.deb.control
+++ b/scripts/cc-metric-collector.deb.control
@@ -6,7 +6,7 @@ Installed-Size: {INSTALLED_SIZE}
 Architecture: {ARCH}
 Maintainer: thomas.gruber@fau.de
 Depends: libc6 (>= 2.2.1)
-Build-Depends: debhelper-compat (= 13), git, golang-go
+Build-Depends: debhelper-compat (= 13), git, golang-go, libdrm-dev
 Description: Metric collection daemon from the ClusterCockpit suite
 Homepage: https://github.com/ClusterCockpit/cc-metric-collector
 Source: cc-metric-collector
--- a/scripts/cc-metric-collector.spec
+++ b/scripts/cc-metric-collector.spec
@@ -29,7 +29,7 @@ make


 %install
-install -Dpm 0750 %{name} %{buildroot}%{_bindir}/%{name}
+install -Dpm 0755 %{name} %{buildroot}%{_bindir}/%{name}
 install -Dpm 0600 example-configs/config.json %{buildroot}%{_sysconfdir}/%{name}/%{name}.json
 install -Dpm 0600 example-configs/collectors.json %{buildroot}%{_sysconfdir}/%{name}/collectors.json
 install -Dpm 0600 example-configs/sinks.json %{buildroot}%{_sysconfdir}/%{name}/sinks.json
@@ -54,7 +54,7 @@ install -Dpm 0644 scripts/%{name}.sysusers %{buildroot}%{_sysusersdir}/%{name}.c

 %files
 # Binary
-%attr(-,clustercockpit,clustercockpit) %{_bindir}/%{name}
+%attr(-,root,root) %{_bindir}/%{name}
 # Config
 %dir %{_sysconfdir}/%{name}
 %attr(0600,clustercockpit,clustercockpit) %config(noreplace) %{_sysconfdir}/%{name}/%{name}.json
Author	SHA1	Message	Date
dependabot[bot]	6dd8d028ab	Bump github.com/fsnotify/fsnotify from 1.10.0 to 1.10.1 Bumps [github.com/fsnotify/fsnotify](https://github.com/fsnotify/fsnotify) from 1.10.0 to 1.10.1. - [Release notes](https://github.com/fsnotify/fsnotify/releases) - [Changelog](https://github.com/fsnotify/fsnotify/blob/main/CHANGELOG.md) - [Commits](https://github.com/fsnotify/fsnotify/compare/v1.10.0...v1.10.1) --- updated-dependencies: - dependency-name: github.com/fsnotify/fsnotify dependency-version: 1.10.1 dependency-type: direct:production update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] <support@github.com>	2026-05-11 03:27:51 +00:00
Holger Obermaier	656ea73d12	Fix: num_cpus could not be excluded	2026-05-07 14:47:23 +02:00
Holger Obermaier	330f923596	Fixed exclude_metrics and check for used metrics	2026-05-07 12:25:07 +02:00
Holger Obermaier	8e58072ff6	Use NewMetric to create a new metric	2026-05-06 13:22:02 +02:00
Holger Obermaier	0f6fee9db4	Do not save current state of infiniband counters, only last state is required	2026-05-06 10:42:06 +02:00
Holger Obermaier	7585ee7289	Add bandwidth metrics for ib_total and ib_total_pkts	2026-05-05 14:13:38 +02:00
Michael Panzlaff	30b2eb69dd	Merge pull request #213 from ClusterCockpit/fix/libdrm-ubuntu-deb CI: Install libdrm-dev for building (required on Ubuntu)	2026-05-04 14:30:44 +02:00
Michael Panzlaff	2a51bd17f3	CI: Install libdrm-dev for building (required on Ubuntu)	2026-05-04 14:17:59 +02:00
dependabot[bot]	34d3d8970e	Bump github.com/fsnotify/fsnotify from 1.9.0 to 1.10.0 Bumps [github.com/fsnotify/fsnotify](https://github.com/fsnotify/fsnotify) from 1.9.0 to 1.10.0. - [Release notes](https://github.com/fsnotify/fsnotify/releases) - [Changelog](https://github.com/fsnotify/fsnotify/blob/main/CHANGELOG.md) - [Commits](https://github.com/fsnotify/fsnotify/compare/v1.9.0...v1.10.0) --- updated-dependencies: - dependency-name: github.com/fsnotify/fsnotify dependency-version: 1.10.0 dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com>	2026-05-04 13:30:59 +02:00
dependabot[bot]	50c7eba192	Bump github.com/ClusterCockpit/cc-lib/v2 from 2.11.0 to 2.12.0 Bumps [github.com/ClusterCockpit/cc-lib/v2](https://github.com/ClusterCockpit/cc-lib) from 2.11.0 to 2.12.0. - [Release notes](https://github.com/ClusterCockpit/cc-lib/releases) - [Commits](https://github.com/ClusterCockpit/cc-lib/compare/v2.11.0...v2.12.0) --- updated-dependencies: - dependency-name: github.com/ClusterCockpit/cc-lib/v2 dependency-version: 2.12.0 dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com>	2026-04-27 12:13:32 +02:00
Michael Panzlaff	d215cabb3e	rpm: The installed binary is not secret and should be rx'able	2026-04-13 12:28:48 +02:00
Michael Panzlaff	86da3c15f7	rpm: The main binary should be owner by root The system user should not be allowed to modify the ccmc binary.	2026-04-08 16:46:19 +02:00
Michael Panzlaff	93cd397b79	Revert "rpm: chown on /usr/bin/cc-metric-collector is unnecessary" This reverts commit `65b9c0ea14`.	2026-04-08 16:45:57 +02:00
Michael Panzlaff	65b9c0ea14	rpm: chown on /usr/bin/cc-metric-collector is unnecessary The file belongs to root otherwise. The monitoring user can already execute it. The monitoring user should not be allowed to change the file, which is slightly more restricting. However it is in line with what 99.9% of packages will do.	2026-04-08 15:56:11 +02:00
dependabot[bot]	0ecf06cee7	Bump github.com/ClusterCockpit/go-rocm-smi from 0.3.0 to 0.4.0 Bumps [github.com/ClusterCockpit/go-rocm-smi](https://github.com/ClusterCockpit/go-rocm-smi) from 0.3.0 to 0.4.0. - [Commits](https://github.com/ClusterCockpit/go-rocm-smi/compare/v0.3...v0.4.0) --- updated-dependencies: - dependency-name: github.com/ClusterCockpit/go-rocm-smi dependency-version: 0.4.0 dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com>	2026-03-30 13:08:36 +02:00
Thomas Roehl	9eaf77db4f	Update README.md	2026-03-24 19:50:51 +01:00
Thomas Roehl	7cb5d1b47a	Add/update sudo configuration to all collectors with 'use_sudo'	2026-03-24 19:50:41 +01:00
Thomas Roehl	319e71a853	IpmiCollector: Remove unused configuration 'exclude_devices'	2026-03-24 19:48:34 +01:00
Michael Panzlaff	1251f9ef6b	Merge pull request #207 from ClusterCockpit/ipmi-sudo Add IPMI sudo support	2026-03-24 15:32:37 +01:00
Michael Panzlaff	f816f4991b	ipmi: refactor and add sudo support	2026-03-24 15:06:47 +01:00
Michael Panzlaff	e40816eb17	ipmi: refactor and add sudo support	2026-03-24 14:24:35 +01:00
Michael Panzlaff	b947f98459	update cc-lib to v2.11.0	2026-03-24 14:24:25 +01:00
dependabot[bot]	c328fbf05a	Bump github.com/ClusterCockpit/go-rocm-smi from 0.3.0 to 0.4.0 Bumps [github.com/ClusterCockpit/go-rocm-smi](https://github.com/ClusterCockpit/go-rocm-smi) from 0.3.0 to 0.4.0. - [Commits](https://github.com/ClusterCockpit/go-rocm-smi/compare/v0.3...v0.4.0) --- updated-dependencies: - dependency-name: github.com/ClusterCockpit/go-rocm-smi dependency-version: 0.4.0 dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com>	2026-03-23 13:00:23 +01:00
dependabot[bot]	37ec7c19e6	Bump github.com/ClusterCockpit/cc-lib/v2 from 2.8.2 to 2.10.0 Bumps [github.com/ClusterCockpit/cc-lib/v2](https://github.com/ClusterCockpit/cc-lib) from 2.8.2 to 2.10.0. - [Release notes](https://github.com/ClusterCockpit/cc-lib/releases) - [Commits](https://github.com/ClusterCockpit/cc-lib/compare/v2.8.2...v2.10.0) --- updated-dependencies: - dependency-name: github.com/ClusterCockpit/cc-lib/v2 dependency-version: 2.10.0 dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com>	2026-03-23 12:48:02 +01:00
Thomas Roehl	13fc8a53d3	Memstat: Fix mem_shared and add more metrics	2026-03-17 18:07:30 +01:00
Thomas Röhl	1937ef2587	Update cc-lib to 2.8.2	2026-03-13 18:00:26 +01:00
Holger Obermaier	35510d3d39	Use strict JSON decoding	2026-03-13 17:57:33 +01:00
Holger Obermaier	ef5e4c2604	Corrected json config	2026-03-13 17:57:33 +01:00
Holger Obermaier	44401318e4	Enable same linters as in CI pipeline	2026-03-13 17:57:33 +01:00
Holger Obermaier	2e60d3111c	Add config option to exclude metrics	2026-03-13 17:57:33 +01:00
Holger Obermaier	e8734c02db	Add config option for manual device configuration	2026-03-13 17:57:33 +01:00
Holger Obermaier	54650d40a6	Store query command for later reuse	2026-03-13 17:57:33 +01:00
Holger Obermaier	e7050834f5	* Honor config option excluded devices * Use device type in read command	2026-03-13 17:57:33 +01:00
Holger Obermaier	893a0d69de	Improve error reporting	2026-03-13 17:57:33 +01:00
Holger Obermaier	345119866a	Switch from lp.NewMessage to lp.NewMetric	2026-03-13 17:57:33 +01:00
Holger Obermaier	ec917cf802	Switch from lp.NewMessage to lp.NewMetric	2026-03-13 17:57:33 +01:00
Holger Obermaier	c7cfc0723b	Fix all linter warnings	2026-03-13 17:57:33 +01:00
Holger Obermaier	4f2685f4c4	Addapt to new ccMessage syntax	2026-03-13 17:57:33 +01:00
Thomas Roehl	439bfacfd9	Add SmartMonCollector to CollectorManager	2026-03-13 17:57:33 +01:00
Thomas Roehl	cd4ac9c885	Add Collector for S.M.A.R.T disk data	2026-03-13 17:57:33 +01:00
Holger Obermaier	eeb60ba0df	Add target to build stripped executable	2026-03-12 11:39:43 +01:00
Holger Obermaier	a481a34dcd	Avoid duplicate error printing	2026-03-12 10:08:23 +01:00
Holger Obermaier	b65576431e	Stricter json parsing (#204 )	2026-03-11 15:59:14 +01:00
Holger Obermaier	a927565868	Fix router config syntax	2026-03-10 13:51:06 +01:00
dependabot[bot]	0b67993eb0	Bump github.com/ClusterCockpit/cc-lib/v2 from 2.7.0 to 2.8.0 Bumps [github.com/ClusterCockpit/cc-lib/v2](https://github.com/ClusterCockpit/cc-lib) from 2.7.0 to 2.8.0. - [Release notes](https://github.com/ClusterCockpit/cc-lib/releases) - [Commits](https://github.com/ClusterCockpit/cc-lib/compare/v2.7.0...v2.8.0) --- updated-dependencies: - dependency-name: github.com/ClusterCockpit/cc-lib/v2 dependency-version: 2.8.0 dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com>	2026-03-09 07:58:27 +01:00
dependabot[bot]	4164e3d1a3	Bump golang.org/x/sys from 0.41.0 to 0.42.0 Bumps [golang.org/x/sys](https://github.com/golang/sys) from 0.41.0 to 0.42.0. - [Commits](https://github.com/golang/sys/compare/v0.41.0...v0.42.0) --- updated-dependencies: - dependency-name: golang.org/x/sys dependency-version: 0.42.0 dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com>	2026-03-09 07:58:11 +01:00