Ignoring master ; because the version is lower than the minimum compatible version – How to solve related issues

Opster Team

Feb-20, Version: 1.7-8.0

Before you begin reading this guide, we recommend you run Elasticsearch Error Check-Up which can resolve issues that cause many errors.

This guide will help you check for common problems that cause the log ” Ignoring master ; because the version is lower than the minimum compatible version ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: discovery, elect, master and version.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up to analyze Elasticsearch configuration and help resolve this error.

Log Context

Log “ignoring master [{}]; because the version [{}] is lower than the minimum compatible version [{}]” classname is ElectMasterService.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

             return null;
        }
        DiscoveryNode masterNode = sortedNodes.get(0);
        // Sanity check: maybe we don't end up here; because serialization may have failed.
        if (masterNode.getVersion().before(minMasterVersion)) {
            logger.warn("ignoring master [{}]; because the version [{}] is lower than the minimum compatible version [{}]"; masterNode; masterNode.getVersion(); minMasterVersion);
            return null;
        } else {
            return masterNode;
        }
    }




 

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