Failed to update system index metadata – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 7.1-8.9

Briefly, this error occurs when Elasticsearch is unable to update the metadata of a system index due to issues like insufficient permissions, network problems, or disk space issues. To resolve this, you can ensure the user has the correct permissions to update the system index. Also, check the network connectivity between the nodes and ensure there’s enough disk space. If the issue persists, consider restarting the Elasticsearch cluster or reindexing the system index.

This guide will help you check for common problems that cause the log ” failed to update system index metadata ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: metadata, index, cluster.

Log Context

Log “failed to update system index metadata” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :


        public void onFailure(Exception e) {
            updateTaskPending = false;
            logger.error("failed to update system index metadata"; e);

        public void clusterStateProcessed(ClusterState oldState; ClusterState newState) {
            updateTaskPending = false;


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