How To Solve Issues Related to Log – Failed to connect to master ; retrying…

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Related Issues – selected resources on related issues  
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Troubleshooting background

To troubleshoot Elasticsearch log “Failed to connect to master ; retrying…” it’s important to know common problems related to Elasticsearch concepts: discovery, master. See below-detailed explanations complete with common problems, examples and useful tips.


To help troubleshoot related issues we have gathered selected Q&A from the community and issues from Github , please review the following for further information :

Elasticsearch error failed to connect to master – no route to host
stackoverflow.com/questions/25885411/elasticsearch-error-failed-to-connect-to-master-no-route-to-host

Number of Views : 14.40 K  Score on Stackoverflow : 10

Connection Timeout To Master For Ne
discuss.elastic.co/t/connection-timeout-to-master-for-new-nodes/156059

 


Log Context

Log ”Failed to connect to master ; retrying…” classname is ZenDiscovery.java
We have extracted the following from Elasticsearch source code to get an in-depth context :

     private boolean joinElectedMaster(DiscoveryNode masterNode) {
        try {
            // first; make sure we can connect to the master
            transportService.connectToNode(masterNode);
        } 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 {






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