Ubuntu Cassandra 3 “Unable to lock JVM memory (ENOMEM)” Troubleshooting Easy Guide

March 3, 2016 | By the+gnu+linux+evangelist.

Linux Ubuntu Solving Cassandra 4 “Unable to lock JVM memory (ENOMEM)”

The Linux Ubuntu Tip Try to Solve Cassandra 4 “Unable to lock JVM memory (ENOMEM)” Issue for Ubuntu GNU/Linux.

Here Below You find detailed Step-by-Step Instructions on How to Solve Cassandra 4 “Unable to lock JVM memory (ENOMEM)”.

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  1. Open a Command Line Terminal Window

    Linux Ubuntu Cassandra 4
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  3. Edit the limits.conf File.

    sudo nano /etc/security/limits.conf

    If Got “User is Not in Sudoers file” then see: How to Enable sudo

    * hard memlock unlimited
    * soft memlock unlimited
    * - nofile 100000
    * - nproc 32768
    * - as unlimited

    Ctrl+x to Save & Exit from nano editor ;)

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  5. Edit the sysctle.conf File.

    sudo nano /etc/sysctl.conf


    vm.max_map_count = 131072

    Save & Exit!

  6. Reboot.

    sudo reboot

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