Created
July 5, 2016 22:56
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Swap service for CoreOS
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| # /etc/systemd/system/swapon.service | |
| # from: https://www.matthowlett.com/notes/2015/08/01/coreos-swap.html | |
| # sudo systemctl enable swapon.service | |
| # restart | |
| # or | |
| # sudo systemctl start swapon | |
| [Unit] | |
| Description=Turn on swap | |
| [Service] | |
| Type=oneshot | |
| Environment="SWAPFILE=/1024MiB.swap" | |
| RemainAfterExit=true | |
| ExecStartPre=/usr/bin/touch ${SWAPFILE} | |
| ExecStartPre=/usr/bin/chattr +C ${SWAPFILE} | |
| ExecStartPre=/usr/bin/fallocate -l 1024m ${SWAPFILE} | |
| ExecStartPre=/usr/bin/chmod 600 ${SWAPFILE} | |
| ExecStartPre=/usr/sbin/mkswap ${SWAPFILE} | |
| ExecStartPre=/usr/sbin/losetup -f ${SWAPFILE} | |
| ExecStart=/usr/bin/sh -c "/sbin/swapon $(/usr/sbin/losetup -j ${SWAPFILE} | /usr/bin/cut -d : -f 1)" | |
| ExecStop=/usr/bin/sh -c "/sbin/swapoff $(/usr/sbin/losetup -j ${SWAPFILE} | /usr/bin/cut -d : -f 1)" | |
| ExecStopPost=/usr/bin/sh -c "/usr/sbin/losetup -d $(/usr/sbin/losetup -j ${SWAPFILE} | /usr/bin/cut -d : -f 1)" | |
| [Install] | |
| WantedBy=multi-user.target |
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