How To Solve Issues Related to Log – Failed to connect to master ; retrying. (version 6.8)

How To Solve Issues Related to Log – Failed to connect to master ; retrying. (version 6.8)

Updated: Jan-20

Elasticsearch Version: 1.7-8.0


Before you begin reading this guide try our beta Elasticsearch Health Check-Up it analyses JSON’s to provide personalized recommendations that can improve your clusters performance.

To troubleshoot log “Failed to connect to master ; retrying. (version 6.8)” it’s important to understand a few problems related to Elasticsearch concepts discovery, master. See bellow important tips and explanations on these concepts

Log Context

Log”Failed to connect to master [{}]; retrying…” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

     private boolean joinElectedMaster(DiscoveryNode masterNode) {
        try {
            // first; make sure we can connect to the master
        } catch (Exception e) {
            logger.warn(() -> new ParameterizedMessage("failed to connect to master [{}]; retrying..."; masterNode); e);
            return false;
        int joinAttempt = 0; // we retry on illegal state if the master is not yet ready
        while (true) {
            try {

Related issues to this log

We have gathered selected Q&A from the community and issues from Github, that can help fix related issues please review the following for further information :

1 Elasticsearch error failed to connect to master – no route to host

14.40 K 10

Connection Timeout To Master For Ne  

About Opster

Opster detects root causes of Elasticsearch problems, provides automated recommendations and can perform various actions to prevent issues and optimize performance

Find Configuration Errors

Analyze Now