Linux Systemd – Managing Dependencies and Boot Order

fedoralinuxsystemd

I need to specify a boot order for processes to start. I have 389 Directory Server and Samba running on Fedora 18. How can I have the network services boot, then 389 DS, then Samba? Is there a GUI to manage this in Fedora?

I have enabled Samba to start with systemctl enable smb.service. I have also enabled 389 DS with systemctl enable dirsrv.target.

Best Answer

Use systemctl edit smb.service to update the dependencies.

After=dirsrv.target - Will ensure the smb.service is started after dirsrv.target.

For robustness, (which will be worth while if you're tinkering with this stuff) you may also wish to include some of the following:

Requires=dirsrv.target - Activate dirsrv.target when smb.service is activated. Will cause smb.service to fail if dirsrv.target fails.

Wants=dirsrv.target - Activate dirsrv.target when smb.service is activated. Won't cause smb.service to fail if dirsrv.target fails.

BindsTo=dirsrv.target - If dirsrv.target is deactivated, deactivate smb.service.

Source: http://www.freedesktop.org/software/systemd/man/systemd.unit.html

systemd-ui provides a GUI for systemd. Gives a good view of the state of systemd but you'll still have to use a text editor to modify the unit files.

Related Topic