Systemd

Project page: https://freedesktop.org/wiki/Software/systemd/

Page with some useful info: https://wiki.archlinux.org/index.php/Systemd

Assorted commands

Reload all units

systemctl daemon-reload

Equivalent of

chkconfig unitname on

is

systemctl enable unitname

Equivalent of

service unitname start

is

systemctl start unitname

If you've created a file in /etc/systemd/system/ and you need to edit it, you can use

systemctl edit --full unitname

This will open the file in your editor and reload it afterwards. If you've edited the file directly, simply reload it afterwards with

systemctl reenable unitname

Things like nagios-nrpe on a multi-homed server where it's bound to just one interface might fail to start automatically because it tries to bind to the interface before it's been brought up. The solution is to make it wait for the network to be fully started.

systemctl edit --full nrpe.service

Replace the line

Requires=network.target

with the following

Requires=network.target network-online.target
Wants=network-online.target
After=network.target network-online.target