Hey Filisimus, the nodes that error message is referring to appears to be your Graylog nodes. Use the default file locations of the Graylog files here to edit the “JVM Settings”. You will see Xms and Xmx arguments within the long string within that file that you can set to your desired amount of heap for your Graylog nodes. After doing this, you need to fully reboot the hosts Graylog is installed on to restart the JVM with the new arguments. This should resolve your issue.