You may want/need to create and enable a swap file on your Linux machine (or server). For example, on some AWS EC2 instances you don't get ephemeral (temporary) storage disks that can be used for swap, so you might want to create a swap file on the main EBS volume to alleviate potential memory issues.
You can create a swap file on your Linux server via a terminal. Note, you'll need
sudo access for this.
First let's check if any swap files have already been enabled:
Output will list any swap files already active. To turn off all swap devices use [
sudo swapoff -a].
The following will create and enable a 8GB swap file at
Making swap persistent
Doing the above will simply enable swap. After a server reboot swap won't be enabled. Do the following to make it persistent:
Now make sure you run (see below) which will check for errors. If nothing (no errors) show then you should be good to go. If errors, don't reboot until you fix (or restore from backup).