Setting up swap on coreos

gistfile1.md

Setup a swap file in the stateful partition

Run these commands as root to create a 512 megabyte swap.

fallocate -l 512m /media/state/512MiB.swap
chmod 600 /media/state/512MiB.swap
mkswap /media/state/512MiB.swap

Create a unit to initialize it on boot

Create a unit file at /media/state/units/swapon.service with these contents:

[Unit]
Description=Turn on swap

[Service]
Type=oneshot
ExecStart=/sbin/swapon /media/state/512MiB.swap

[Install]
WantedBy=local.target

Enable the unit and start using swap

systemctl enable --runtime /media/state/units/swapon.service
systemctl start swapon

On your next reboot the swap will be turned on automatically.

I'm using this config in Digital Ocean, but it doesn't turn on swap automatically after rebooting. any ideas?

Same problem as @Kaijun. Also in DO.

@Kaijun and @intellent, remove the --runtime on systemctl enable command.