Removed PID file creation, as not required by systemd

README.md

@@ -54,8 +54,6 @@ Usage of metric-collector:
     	Path for logfile (default "stderr")
   -once
     	Run all collectors only once
-  -pidfile string
-    	Path for PID file (default "/var/run/cc-metric-collector.pid")
 ```
 
 

metric-collector.go

@@ -24,7 +24,6 @@ import (
 type CentralConfigFile struct {
 	Interval            int    `json:"interval"`
 	Duration            int    `json:"duration"`
-	Pidfile             string `json:"pidfile,omitempty"`
 	CollectorConfigFile string `json:"collectors"`
 	RouterConfigFile    string `json:"router"`
 	SinkConfigFile      string `json:"sinks"`
@@ -87,14 +86,12 @@ 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")
-	pidfile := flag.String("pidfile", "/var/run/cc-metric-collector.pid", "Path for PID file")
 	once := flag.Bool("once", false, "Run all collectors only once")
 	debug := flag.Bool("debug", false, "Activate debug output")
 	flag.Parse()
 	m = make(map[string]string)
 	m["configfile"] = *cfg
 	m["logfile"] = *logfile
-	m["pidfile"] = *pidfile
 	if *once {
 		m["once"] = "true"
 	} else {
@@ -125,25 +122,6 @@ func ReadCli() map[string]string {
 //	return nil
 //}
 
-//func CreatePidfile(pidfile string) error {
-//	file, err := os.OpenFile(pidfile, os.O_CREATE|os.O_RDWR, 0600)
-//	if err != nil {
-//		log.Print(err)
-//		return err
-//	}
-//	file.Write([]byte(fmt.Sprintf("%d", os.Getpid())))
-//	file.Close()
-//	return nil
-//}
-
-//func RemovePidfile(pidfile string) error {
-//	info, err := os.Stat(pidfile)
-//	if !os.IsNotExist(err) && !info.IsDir() {
-//		os.Remove(pidfile)
-//	}
-//	return nil
-//}
-
 // General shutdownHandler function that gets executed in case of interrupt or graceful shutdownHandler
 func shutdownHandler(config *RuntimeConfig, shutdownSignal chan os.Signal) {
 	defer config.Sync.Done()
@@ -174,11 +152,6 @@ func shutdownHandler(config *RuntimeConfig, shutdownSignal chan os.Signal) {
 		cclog.Debug("Shutdown SinkManager...")
 		config.SinkManager.Close()
 	}
-
-	//	pidfile := config.ConfigFile.Pidfile
-	//	RemovePidfile(pidfile)
-	//	pidfile = config.CliArgs["pidfile"]
-	//	RemovePidfile(pidfile)
 }
 
 func mainFunc() int {
@@ -226,8 +199,6 @@ func mainFunc() int {
 		return 1
 	}
 
-	//	err = CreatePidfile(rcfg.CliArgs["pidfile"])
-
 	// Set log file
 	if logfile := rcfg.CliArgs["logfile"]; logfile != "stderr" {
 		cclog.SetOutput(logfile)

scripts/cc-metric-collector.config

@@ -15,6 +15,3 @@ CONF_DIR=/etc/cc-metric-collector
 CONF_FILE=/etc/cc-metric-collector/cc-metric-collector.json
 
 RESTART_ON_UPGRADE=true
-
-# Only used on systemd systems
-PID_FILE_DIR=/var/run

scripts/cc-metric-collector.service

@@ -14,11 +14,7 @@ Restart=on-failure
 WorkingDirectory=/tmp
 RuntimeDirectory=cc-metric-collector
 RuntimeDirectoryMode=0750
-ExecStart=/usr/sbin/cc-metric-collector                                             \
+ExecStart=/usr/sbin/cc-metric-collector --config=${CONF_FILE}
-                            --config=${CONF_FILE}                                   \
-                            --pidfile=${PID_FILE_DIR}/cc-metric-collector.pid
-
-
 LimitNOFILE=10000
 TimeoutStopSec=20
 UMask=0027