How To Solve Issues Related to Log – Value for setting is too low. This can result in data loss! Please set it to at least a quorum of master-

Prevent Your Next ELK Incident

Try our free Check Up to test if your ES issues are caused from misconfigured settings

Fix Issue

Updated: Dec-19

In-Page Navigation (click to jump) :

Opster Offer’s World-Class Elasticsearch Expertise In One Powerful Product
Try Our Free ES Check-Up   Prevent Incident

Troubleshooting background

To troubleshoot Elasticsearch log “Value for setting is too low. This can result in data loss! Please set it to at least a quorum of master-” it’s important to understand common problems related to Elasticsearch concepts: discovery-azure-classic, elect. See detailed explanations below 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 :

1 Whats Means Cloudoc1 Value For Sett  

2Elasticearch Load Balanced 2 Master  

Upgraded Node In My Cluster But Sta


Log Context

Log ”Value for setting {} is too low. This can result in data loss! Please set it to at least a quorum of master-“ classname is ElectMasterService.java
We have extracted the following from Elasticsearch source code to get an in-depth context :

     }

    public void logMinimumMasterNodesWarningIfNecessary(ClusterState oldState; ClusterState newState) {
        // check if min_master_nodes setting is too low and log warning
        if (hasTooManyMasterNodes(oldState.nodes()) == false && hasTooManyMasterNodes(newState.nodes())) {
            logger.warn("value for setting \"{}\"" is too low. This can result in data loss! Please set it to at least a quorum of master-"" +
                    ""eligible nodes (current value: [{}]; total number of master-eligible nodes used for publishing in this round: [{}])"";
                ElectMasterService.DISCOVERY_ZEN_MINIMUM_MASTER_NODES_SETTING.getKey(); minimumMasterNodes();
                newState.getNodes().getMasterNodes().size());
        }
    }

"


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.

Learn more: Glossary | Blog| Troubleshooting guides | Error Repository

Need help with any Elasticsearch issue ? Contact Opster