66 is a collection of system tools built around s6 and s6-rc created to make the implementation and manipulation of service files on your machine easier. Wiki
66 manages services and other as trees. From the Wiki:
Trees are bundles of services, programs, daemons, that should run once, all the time, when you need them, depending on the type.
The tree boot, created in Installation, initialises system (setting hostname, timezone, open luks devices, etc) and starts agetty on tty1-4.
Install boot-66serv package and enable mandatory tree boot:
# 66-tree -n boot
# 66-enable -C -F -t boot boot@system
Configure bootprocess with:
# 66-env -t boot -e boot@system
# 66-enable -F -t boot boot@system
First command invokes $EDITOR to edit and the second applies the edits.
Add init=/usr/bin/66 to kernel commandline to boot with 66 instead of runit.
One can boot after the step described above but but they will soon discover that the reboot,shutdown and poweroff commands do not work, but CTRL+ALT+DEL does!
That is because the new init can capture the later, but the rest are still from the void-runit package and cannot work with 66. The 66 commands can be used directly by running /etc/66/halt, /etc/66/reboot etc as root, or you can symlink them, replacing the runit commands.
- Rename the old runit commands (as root):
# for i in /usr/bin/{reboot,poweroff,halt,shutdown}; do mv $i $i.runit; done
- Create the symlinks for the 66 commands (as root):
# for i in {reboot,poweroff,halt,shutdown}; do ln -s /etc/66/$i /usr/bin/$i; done
The two commands above will solve the problem in a system booted with 66, but they will create a similar in a runit-booted system. To reverse them, do the folowing:
- Delete the symlinks:
# rm /usr/bin/{reboot,poweroff,shutdown,halt}
- Rename the original runit scripts/binaries (as root):
# cd /usr/bin && for i in {reboot,poweroff,shutdown,halt}; do mv $i.runit $i; done
66 can work with the existing runit services, replacing only the first stage of the regular init process. This is necessary since there are no individual service files for 66 at the moment.
That can be accomplised by configuring runit to run only services that are not included in the boot-66serv package by removing the symlinks to their service directories. That should be the agetty services:
# rm /var/service/agetty-*
If you need to reverse the above, in case you need to boot with runit, fist boot as a single user/ recovery and then give the following command.
# for i in {agetty-tty1,agetty-tty2,agetty-tty2,agetty-tty3,agetty-tty4,agetty-tty5,agetty-tty6}; do ln -sr /etc/sv/$i /var/service/$i; done
and reboot the system.
The use the remaining runit services, the runit tree should be created and then the runit service enabled and started:
# 66-tree -nE runit
# 66-enable -t runit -S runit