Update README.md

README.md

@@ -1,2 +1,31 @@
 # cc-metric-collector
-A node agent for measuring, processing and forwarding node level metrics
+A node agent for measuring, processing and forwarding node level metrics.
+
+Open questions:
+
+* Are hostname unique with a computing center or is it required to store the cluster name in addition to the hostname?
+* What about memory domain granularity?
+
+# Configuration
+
+Configuration is implemented using a single json document that is distributed over network.
+
+``` json
+{
+sink: db.monitoring.center.de,
+granularity: core,
+frequency: {
+core: 30,
+node: 60
+}
+metrics: [
+ipc,
+flops_any,
+clock,
+load,
+mem_bw,
+mem_used,
+net_bw,
+file_bw
+]}
+```