Disconnected – How to solve this Elasticsearch error

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Disconnected – How to solve this Elasticsearch error

Opster Team

March-22, 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 ” disconnected ” 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 “disconnected”classname  is LeaderChecker.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 () -> new ParameterizedMessage(
 "master node [{}] disconnected; restarting discovery";
 new NodeDisconnectedException(discoveryNode; "disconnected")
 private void scheduleNextWakeUp() {


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