ETCD ID Mismatch in Kubernetes: How to Fix It
ETCD ID Mismatch in Kubernetes ETCD is the key-value store used by Kubernetes to keep cluster state. Sometimes you may see the following error in ETCD logs: 2025-11-11 12:13:10.134330 E | rafthttp: request cluster ID mismatch (got fc5dec74b3dcf6fa want 4e38d7b9b94fe83c) It usually happens when a member of the ETCD cluster has a different ID than what the cluster expects. Causes Restoring a backup incorrectly. Copying ETCD data directories between nodes. Node reinstallation without cleaning old ETCD state. Cluster misconfiguration after scaling or failover. How to Fix Step 1: Identify the problem member ...