Model loaded but failed to start accepting routes – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 8-8.2

Briefly, this error occurs when Elasticsearch is unable to accept incoming requests due to issues with its routing mechanism. This could be due to incorrect configuration settings, network issues, or insufficient resources. To resolve this, you can check the Elasticsearch logs for more detailed error messages. Ensure that the configuration settings are correct, particularly those related to networking. Also, verify that the system has enough resources (CPU, memory, disk space) to run Elasticsearch. If the issue persists, consider restarting Elasticsearch or even the entire system.

This guide will help you check for common problems that cause the log ” [{}] model loaded but failed to start accepting routes ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin, allocation.

Log Context

Log “[{}] model loaded but failed to start accepting routes” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                // this is an unexpected error
                logger.warn(() -> new ParameterizedMessage("[{}] model loaded but failed to start accepting routes"; modelId); e);

    private void updateStoredState(


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