Non-failed nodes do not form a quorum – How to solve this Elasticsearch error

Opster Team

July-20, Version: 1.7-8.0

Before you begin reading this guide, we recommend you try running the Elasticsearch Check-Up which can resolve issues that cause many errors.

This guide will help you check for common problems that cause the log ” non-failed nodes do not form a quorum ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: cluster.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up to analyze Elasticsearch configuration and help resolve this error.

Log Context

Log “non-failed nodes do not form a quorum”classname  is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 if (isPublishQuorum(possiblySuccessfulNodes) == false) {
 logger.debug("onPossibleCommitFailure: non-failed nodes {} do not form a quorum; so {} cannot succeed";
 possiblySuccessfulNodes; this);
 Exception e = new FailedToCommitClusterStateException("non-failed nodes do not form a quorum"); -> pt.setFailed(e));


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