Failed to validate token since the security index doesn t exist – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 7-7.1

Briefly, this error occurs when Elasticsearch tries to validate a token but fails because the security index, which stores security-related information, doesn’t exist. This could be due to incorrect configuration or the index being accidentally deleted. To resolve this issue, you can recreate the security index if it was deleted. If it’s a configuration issue, ensure that the Elasticsearch security features are properly enabled. Also, check if the Elasticsearch cluster has the necessary permissions to create and manage the security index.

This guide will help you check for common problems that cause the log ” failed to validate token [{}] since the security index doesn’t exist ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin, index.

Log Context

Log “failed to validate token [{}] since the security index doesn’t exist” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

        Instant currentTime = clock.instant();
        if (currentTime.isAfter(userToken.getExpirationTime())) {
            listener.onFailure(traceLog("validate token"; userToken.getId(); expiredTokenException()));
        } else if (securityIndex.indexExists() == false) {
            // index doesn't exist so the token is considered invalid as we cannot verify its validity
            logger.warn("failed to validate token [{}] since the security index doesn't exist"; userToken.getId());
        } else {
            securityIndex.checkIndexVersionThenExecute(listener::onFailure; () -> {
                final GetRequest getRequest = client.prepareGet(SECURITY_INDEX_NAME; SINGLE_MAPPING_NAME; getTokenDocumentId(userToken))