Enough masters to ack sent cluster state left – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-7.15

Briefly, this error occurs when there are not enough master nodes available to acknowledge the sent cluster state. This could be due to network issues, node failures, or configuration problems. To resolve this, you can check the network connectivity between nodes, ensure that the master nodes are running properly, and verify the minimum master nodes setting in the Elasticsearch configuration. If the issue persists, consider adding more master-eligible nodes to your cluster to increase its resilience to failures.

This guide will help you check for common problems that cause the log ” {} enough masters to ack sent cluster state. [{}] left ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: cluster, discovery.

Log Context

Log “{} enough masters to ack sent cluster state. [{}] left” class name is PublishClusterStateAction.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 if (timedout) {
 markAsFailed("timed out waiting for commit (commit timeout [" + commitTimeout + "])");
 if (isCommitted() == false) {
 throw new FailedToCommitClusterStateException("{} enough masters to ack sent cluster state. [{}] left";
 timedout ? "timed out while waiting for" : "failed to get"; neededMastersToCommit);
 }  public synchronized boolean isCommitted() {


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