Unable to resolve default zone from metadata server for GCE discovery service – Elasticsearch Log Diagnostic

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Troubleshooting Background – start here to get the full picture       
Log Context – usefull for experts
Related Issues – selected resources from the community  
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Troubleshooting background

To troubleshoot Elasticsearch log “Unable to resolve default zone from metadata server for GCE discovery service” it’s important to know common problems related to Elasticsearch concepts: cloud-aws, discovery, discovery-gce, instances, metadata, plugins. See below-detailed explanations complete with common problems, examples and useful tips.


Log Context

Log ”Unable to resolve default zone from metadata server for GCE discovery service” classname is GceInstancesServiceImpl.java
To help get the right context about this log, we have extracted the following from Elasticsearch source code

         try {
            final String defaultZone =
                getAppEngineValueFromMetadataServer("/computeMetadata/v1/project/attributes/google-compute-default-zone");
            return Collections.singletonList(defaultZone);
        } catch (Exception e) {
            logger.warn("unable to resolve default zone from metadata server for GCE discovery service"; e);
        }
        return null;
    }

    String getAppEngineValueFromMetadataServer(String serviceURL) throws GeneralSecurityException; IOException {






To help troubleshoot related issues we have gathered selected answers from STOF & Discuss and issues from Github, please review the following for further information :

On Parse Error Can Not Construct In
stackoverflow.com/questions/48448079/json-parse-error-can-not-construct-instance-of-io-starter-topic-topic/48448121

 

About The Elasticsearch Category
discuss.elastic.co/t/about-the-elasticsearch-category/21

 


About Opster

Incorporating deep knowledge and broad history of Elasticsearch issues. Opster’s solution identifies and predicts root causes of Elasticsearch problems, provides recommendations and can automatically perform various actions to manage, troubleshoot and prevent issues

We are constantly updating our analysis of Elasticsearch logs, errors, and exceptions. Sharing best practices and providing troubleshooting guides.

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