Failed to invoke before index added to cluster callback – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-8.9

Briefly, this error occurs when Elasticsearch encounters an issue while executing a callback function before adding an index to the cluster. This could be due to a plugin malfunction, a configuration issue, or a problem with the cluster state. To resolve this, you can try disabling or updating the problematic plugin, checking your configuration settings, or verifying the health and state of your cluster. If the problem persists, consider checking the Elasticsearch logs for more detailed error information.

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

Log Context

Log “failed to invoke before index added to cluster callback” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

    public void beforeIndexAddedToCluster(Index index; Settings indexSettings) {
        for (IndexEventListener listener : listeners) {
            try {
                listener.beforeIndexAddedToCluster(index; indexSettings);
            } catch (Exception e) {
                logger.warn("failed to invoke before index added to cluster callback"; e);
                throw e;


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