ETCD Performance Check

etcd-perf-check

### Performance check command from etcd pod

# oc rsh <etcd-pod> -n openshift-etcd
$ etcdctl check perf --load="m"
$ etcdctl check perf --load='l'
$ etcdctl --write-out=table endpoint status
$ etcdctl --write-out=table endpoint health
$ etcdctl --write-out=table member list

### Collect metrics from the cluster.
[-] https://access.redhat.com/solutions/5489721

### Performance check command from master node for underlying storage performance
# ssh core@masternode
# sudo su
# podman run --volume /var/lib/etcd:/var/lib/etcd:Z quay.io/openshift-scale/etcd-perf