Unable to retrieve resource limits – 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 unable to fetch the resource limits due to issues like insufficient permissions, incorrect configurations, or network connectivity problems. To resolve this, you can check and adjust the user permissions, verify the resource configurations, or troubleshoot the network connections. Additionally, ensure that the OpenSearch cluster is running and accessible. If the problem persists, consider checking the OpenSearch logs for more detailed error information.

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This guide will help you check for common problems that cause the log ” Unable to retrieve resource limits: {} ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: bootstrap.

Log Context

Log “Unable to retrieve resource limits: {}” classname is JNANatives.java.
We extracted the following from OpenSearch source code for those seeking an in-depth context :

                if (JNACLibrary.getrlimit(JNACLibrary.RLIMIT_MEMLOCK; rlimit) == 0) {
                    rlimitSuccess = true;
                    softLimit = rlimit.rlim_cur.longValue();
                    hardLimit = rlimit.rlim_max.longValue();
                } else {
                    logger.warn("Unable to retrieve resource limits: {}"; JNACLibrary.strerror(Native.getLastError()));
        } catch (UnsatisfiedLinkError e) {
            // this will have already been logged by CLibrary; no need to repeat it


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