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Ubuntu MAAS 2.7.0 Wake on LAN Driver Patch

The WOL driver has indeed been removed from MAAS 2.0, but WoL functionality is still needed.
This patch is based on Using Wake on LAN with MAAS 2.x, Ubuntu MAAS 2.2+ Wake on LAN Driver Patch and Ubuntu MAAS 2.2 Wake on LAN Driver Patch.

This patch uses wakeonlan package, but can be modified to use etherwake or powerwake in the wol_cmd variable. Though etherwake needs sudo added to the command variable.

Requirement:

  • Install the wakeonlan package (or etherwake, powerwake on your choice)
  • Install MAAS

Patch the WOL driver into MAAS as follows:

$ sudo apt-get install -y wakeonlan
$ PATCH_DIR="/usr/lib/python3/dist-packages/provisioningserver/"
$ sudo patch -p1 -d ${PATCH_DIR} < maas-wol.diff 
$ sudo systemctl restart maas-rackd maas-regiond

Note for etherwake

etherwake uses udp which requires it to run as root. The fix is to allow maas to become root.

run sudo visudo

add the line

maas ALL= NOPASSWD: /usr/sbin/etherwake

where /usr/sbin/etherwake is the result of which etherwake

Note to enable WOL host

WOL on the host can be enabled by adding this udev rule.

/etc/udev/rules.d/wol.rules

ACTION=="add", SUBSYSTEM=="net", NAME=="en*", RUN+="/sbin/ethtool -s $name wol g"