How to Get Details of ETCD Cluster?

Problem

Obtain the details of an ETCD cluster including RAFT TERM, INDEX, and DB SIZE for a Kubernetes cluster. 

Environment

• Platform9 Managed Kubernetes - v4.0 and Higher
• ETCD

Procedure

1. Copy etcdctl binary from the etcd container on any of the master nodes.
   

   # docker cp <etcd containerName>:/usr/local/bin/etcdctl <destination path> 

2. Get etcd endpoints list and store into the ETCDCTL_ENDPOINTS variable.
   

   # export ETCDCTL_ENDPOINTS=$(./etcdctl --ca-file /etc/pf9/kube.d/certs/etcdctl/etcd/ca.crt --cert-file /etc/pf9/kube.d/certs/etcdctl/etcd/request.crt --key-file /etc/pf9/kube.d/certs/etcdctl/etcd/request.key member list | cut -d " " -f4 | sed -e 's/clientURLs=//g'| paste -sd ',')

3. Set the etcd API version to 3.

   # export ETCDCTL_API=3
   

4. Run the following command to get the ETCD cluster details. 
   

   # ./etcdctl --cacert /etc/pf9/kube.d/certs/etcdctl/etcd/ca.crt --cert /etc/pf9/kube.d/certs/etcdctl/etcd/request.crt --key /etc/pf9/kube.d/certs/etcdctl/etcd/request.key endpoint status --write-out table