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felegy/swap-init.sh

Created January 18, 2022 10:37
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swap-init.sh
#!/usr/bin/env bash
SWAP_SIZE=${SWAP_SIZE-"4G"}
SWAP_FILE=${SWAP_FILE-"/swap"}
fallocate -l "$SWAP_SIZE" "$SWAP_FILE"
chmod 600 "$SWAP_FILE"
mkswap "$SWAP_FILE"
swapon "$SWAP_FILE"
echo "$SWAP_FILE swap swap defaults 0 0" >>/etc/fstab
swapon --show
grub_file=$(sed "s/GRUB_CMDLINE_LINUX=\"\(.*\)\"/GRUB_CMDLINE_LINUX=\"cgroup_enable=memory swapaccount=1\"/" /etc/default/grub)
echo "$grub_file" >/etc/default/grub
update-grub 2> /dev/stdout
echo 'vm.swappiness=10' >> /etc/sysctl.conf
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