Unable to link C library native methods seatbelt will be disabled – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-8.9

Briefly, this error occurs when Elasticsearch is unable to link to the C library’s native methods, resulting in the disabling of the seatbelt feature. This could be due to an incorrect library path or missing dependencies. To resolve this issue, you can: 1) Check the library path and ensure it’s correctly pointing to the C library. 2) Verify that all necessary dependencies are installed and up-to-date. 3) Reinstall Elasticsearch to ensure all components are correctly installed. 4) Check the system’s permissions to ensure Elasticsearch has the necessary access to link the C library.

This guide will help you check for common problems that cause the log ” unable to link C library. native methods (seatbelt) will be disabled. ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: bootstrap.

Log Context

Log “unable to link C library. native methods (seatbelt) will be disabled.” classname is SystemCallFilter.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

        MacLibrary lib = null;
        if (Constants.MAC_OS_X) {
            try {
                lib = Native.loadLibrary("c"; MacLibrary.class);
            } catch (UnsatisfiedLinkError e) {
                logger.warn("unable to link C library. native methods (seatbelt) will be disabled."; e);
        libc_mac = lib;


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