Index is closed This is likely to prevent security from functioning correctly – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 7.3-8.9

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Briefly, this error occurs when an Elasticsearch index is closed, which means it’s not available for read or write operations. This can affect the functioning of security features. To resolve this issue, you can reopen the index using the ‘open index’ API. Alternatively, you can delete the closed index if it’s no longer needed. However, ensure you have a backup before deleting. Lastly, check your index lifecycle management policies to prevent indices from being closed unexpectedly.

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This guide will help you check for common problems that cause the log ” Index [{}] is closed. This is likely to prevent security from functioning correctly ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin, index.

Log Context

Log “Index [{}] is closed. This is likely to prevent security from functioning correctly” classname is SecurityIndexManager.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

            indexState = null;
            indexHealth = null;
        } else if (indexMetadata.getState() == IndexMetadata.State.CLOSE) {
            indexState = IndexMetadata.State.CLOSE;
            indexHealth = null;
            logger.warn("Index [{}] is closed. This is likely to prevent security from functioning correctly"; concreteIndexName);
        } else {
            indexState = IndexMetadata.State.OPEN;
            final IndexRoutingTable routingTable = event.state().getRoutingTable().index(indexMetadata.getIndex());
            indexHealth = new ClusterIndexHealth(indexMetadata; routingTable).getStatus();
        }

 

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