Etcd Commands

• etcdctl supports the following commands in Version 2:

  etcdctl backup
  etcdctl cluster-health
  etcdctl mk
  etcdctl mkdir
  etcdctl set
  

• etcdctl commands in Version 3:

  etcdctl snapshot save 
  etcdctl endpoint health
  etcdctl get
  etcdctl put
  

• Set the API level with this command.

  export ETCDCTL_API=3
  

• If the API level is not set, it is assumed that Version 2 is in use.
• Must specify paths to certificates files, then etcdctl can then authenticate to the etcd API Server.
• The certificate files are available in the etcd-master pod at these paths:

  --cacert /etc/kubernetes/pki/etcd/ca.crt     
  --cert /etc/kubernetes/pki/etcd/server.crt     
  --key /etc/kubernetes/pki/etcd/server.key
  

• You must specify the API version and paths to certificate files, like in the below example:

  kubectl exec etcd-master -n kube-system -- sh -c "ETCDCTL_API=3 etcdctl get / --prefix --keys-only --limit=10 --cacert /etc/kubernetes/pki/etcd/ca.crt --cert /etc/kubernetes/pki/etcd/server.crt  --key /etc/kubernetes/pki/etcd/server.key"