Create swap file on CentOS

PUBLISHED ON SEP 6, 2019 — CENTOS, HOW-TO, LINUX

I needed swap for a t2.micro ec2 machine because it was dying almost twice a week, so I created a swap file for this.

Run as root or the following commands:

fallocate -l 1G /swapfile
chmod 600 /swapfile
mkswap /swapfile
swapon /swapfile

let’s add the following line to the /etc/fstab file

/swapfile swap swap defaults 0 0

Testing

free -h
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