Manage etcd

etcd is a consistent, distributed key-value store that provides a reliable way to store data that needs to be accessed by a distributed system or cluster of machines. It handles leader elections during network partitions and can tolerate machine failure, even in the leader node.

For MKE, etcd serves as the Kubernetes backing store for all cluster data, with an etcd replica deployed on each MKE manager node. This is a primary reason why Mirantis recommends that you deploy an odd number of MKE manager nodes, as etcd uses the Raft consensus algorithm and thus requires that a quorum of nodes agree on any updates to the cluster state.