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Automatic merge from submit-queue Added a basic monitor for providing etcd version related info Fixes #41071 This tool scrapes metrics partly from etcd's /version and /metrics endpoints and partly using etcdctl and exposes them as prometheus metrics at `http://localhost:9101/metrics` endpoint on the master. Here is a summary of the metrics it exposes (self-explanatory from the code): - etcdVersionFetchCount = prometheus.NewCounterVec( prometheus.CounterOpts{ Namespace: "etcd", Name: "version_info_fetch_count", Help: "Number of times etcd's version info was fetched, labeled by etcd's server binary and cluster version", }, []string{"serverversion", "clusterversion"}) - etcdGRPCRequestsTotal = prometheus.NewCounterVec( prometheus.CounterOpts{ Namespace: namespace, Name: "grpc_requests_total", Help: "Counter of received grpc requests, labeled by grpc method and grpc service names", }, []string{"grpc_method", "grpc_service"}) For further info on how to run this as a binary/docker-container/kubernetes-pod and checking the metrics, have a look at the README.md file. cc @fgrzadkowski @wojtek-t @piosz