Failed to load default project id fallback – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 7.13-8.9

Briefly, this error occurs when Elasticsearch is unable to load the default project ID fallback. This could be due to incorrect configuration settings or missing project ID in the Elasticsearch setup. To resolve this issue, you can check and correct your configuration settings, ensuring that the default project ID is correctly set. Alternatively, you may need to create a new project ID if it doesn’t exist or is inaccessible. Also, ensure that Elasticsearch has the necessary permissions to access and load the project ID.

This guide will help you check for common problems that cause the log ” failed to load default project id fallback ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: repository-gcs, repositories.

Log Context

Log “failed to load default project id fallback” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                        if (projectId != null) {
                } catch (Exception e) {
                    logger.warn("failed to load default project id fallback"; e);
        if (gcsClientSettings.getCredential() == null) {
            try {