swap 생성

스왑 확인

swapon --summary

스왑 생성

fallocate -l 512M /swapfile
dd if=/dev/zero of=/swapfile bs=1M count=512
chmod 600 /swapfile
ls -a / | grep swapfile

-rw------- 1 root root 536870912 Feb 12 23:55 swapfile

mkswap /swapfile
swapon /swapfile

vim /etc/fstab

/swapfile none swap defaults 0 0