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

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
   Ctrl+Alt+t

   

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2. 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
   Append:

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

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

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3. Edit the sysctle.conf File.

   sudo nano /etc/sysctl.conf

   Append:

   vm.max_map_count = 131072

   Save & Exit!

4. Reboot.

   sudo reboot