Signing credentials missing null – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 8.6-8.9

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Briefly, this error occurs when Elasticsearch cannot find the necessary credentials for signing a request. This could be due to missing, incorrect, or improperly configured authentication details. To resolve this issue, you can: 1) Verify that the necessary credentials are correctly entered and saved in your Elasticsearch configuration. 2) Check if the credentials are correctly passed in the request. 3) Ensure that the user associated with the credentials has the necessary permissions to perform the requested operation.

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This guide will help you check for common problems that cause the log ” Signing credentials missing; null ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Log Context

Log “Signing credentials missing; null” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :


    private static void logDiff(final List newCredentials; final AtomicReference> previousCredentialsRef) {
        if (newCredentials == null) {
            logger.warn("Signing credentials missing; null");
        } else if (newCredentials.isEmpty()) {
            logger.warn("Signing credentials missing; empty");


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