How To Solve Issues Related to Log – Cannot register console handler because JNA is not available

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Updated: Jan-20

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Troubleshooting background

To troubleshoot Elasticsearch log “Cannot register console handler because JNA is not available” it’s important to understand common problems related to Elasticsearch concepts: bootstrap, handler. See detailed explanations below complete with common problems, examples and useful tips.


To help troubleshoot related issues we have gathered selected Q&A from the community and issues from Github , please review the following for further information :

1 Unable to load JNA native support library Elasticsearch 6.x 5.82 K 6

2Elasticsearch 2 0 Warning Jna Is No  


Log Context

Log ”Cannot register console handler because JNA is not available” classname is Natives.java
We have extracted the following from Elasticsearch source code to get an in-depth context :

         return JNANatives.getShortPathName(path);
    }

    static void addConsoleCtrlHandler(ConsoleCtrlHandler handler) {
        if (!JNA_AVAILABLE) {
            logger.warn("cannot register console handler because JNA is not available");
            return;
        }
        JNANatives.addConsoleCtrlHandler(handler);
    }







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