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How to Get Details of ETCD Cluster?

  • Updated

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