Log Exception caught during discovery: – How To Solve Related Issues

Log Exception caught during discovery: – How To Solve Related Issues

Updated: Feb-20

Elasticsearch Version: 1.7-8.0


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To troubleshoot log “Exception caught during discovery:” it’s important to understand a few problems related to Elasticsearch concepts discovery, discovery-gce, hosts, plugins. See bellow important tips and explanations on these concepts

Log Context

Log”Exception caught during discovery: {}” classname is GceUnicastHostsProvider.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                     logger.warn("failed to add {}; address {}"; e; name; ip_private);

        } catch (Throwable e) {
            logger.warn("Exception caught during discovery: {}"; e; e.getMessage());

        logger.debug("{} node(s) added"; cachedDiscoNodes.size());
        logger.debug("using dynamic discovery nodes {}"; cachedDiscoNodes);

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 :


Github Issue Number 16967  


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