Cannot getrlimit RLIMIT NPROC because JNA is not available – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-8.9

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Briefly, this error occurs when Elasticsearch is unable to access the Java Native Access (JNA) library, which is required to get the resource limit (RLIMIT_NPROC). This could be due to a missing or incorrectly installed JNA. To resolve this issue, ensure that the JNA library is correctly installed and accessible by Elasticsearch. If it’s already installed, try updating it to the latest version. Also, check the Elasticsearch’s permissions to access the JNA library. If the problem persists, consider reinstalling Elasticsearch.

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This guide will help you check for common problems that cause the log ” cannot getrlimit RLIMIT_NPROC because JNA is not available ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: bootstrap.

Log Context

Log “cannot getrlimit RLIMIT_NPROC because JNA is not available” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :


    static void trySetMaxNumberOfThreads() {
        if (JNA_AVAILABLE == false) {
            logger.warn("cannot getrlimit RLIMIT_NPROC because JNA is not available");


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