Create a swap file

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Create a swap file

Last Modified: Oct 21, 2018, 8:26 pm

Some VPSs do not come with a swap file. DirectAdmin recommends to 2 Gig of ram, and 4 Gig of swap.
The more ram the better, but much more than 4Gig of swap isn't as useful.

To add 4 Gig of swap, assuming you have enough space on disk, would be to run:

dd if=/dev/zero of=/swapfile count=4096 bs=1MiB
chmod 600 /swapfile
mkswap /swapfile
swapon /swapfile

and confirm it's loaded in with:

free -m

or by running "top".

If it works, then add this into your /etc/fstab:

/swapfile swap swap sw 0 0