Explicitly enforcing bootstrap checks – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 1-2.9

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Briefly, this error occurs when OpenSearch is in production mode and fails to pass the bootstrap checks, which are a set of best-practice configuration checks. This could be due to incorrect network settings, JVM settings, or file descriptors. To resolve this, ensure that your configuration adheres to the recommended production settings. Check your network settings, JVM settings, and the number of allowed file descriptors. Also, ensure that you’re not using deprecated settings. If the error persists, review the OpenSearch logs for more specific information about the failed checks.

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This guide will help you check for common problems that cause the log ” explicitly enforcing bootstrap checks ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: bootstrap, checks.

Log Context

Log “explicitly enforcing bootstrap checks” classname is BootstrapChecks.java.
We extracted the following from OpenSearch source code for those seeking an in-depth context :


        if (enforceLimits) {
            logger.info("bound or publishing to a non-loopback address; enforcing bootstrap checks");
        } else if (enforceBootstrapChecks) {
            logger.info("explicitly enforcing bootstrap checks");

        for (final BootstrapCheck check : checks) {
            final BootstrapCheck.BootstrapCheckResult result = check.check(context);
            if (result.isFailure()) {


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