Monitoring execution failed – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-8.9

Briefly, this error occurs when Elasticsearch fails to execute a monitoring task. This could be due to a variety of reasons such as insufficient resources, network issues, or configuration errors. To resolve this issue, you can try increasing system resources, checking network connectivity, or reviewing and correcting your Elasticsearch configuration. Additionally, check the Elasticsearch logs for more detailed error messages that can provide further insight into the problem.

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

Log Context

Log “monitoring execution failed” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :


                public void onFailure(Exception e) {
                    logger.warn("monitoring execution failed"; e);

                public void onRejection(Exception e) {


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