Michal Schmidt <mschmidt <at> redhat.com> writes: > ... > > 2. > > main-service-2.service: > > [Unit] > > Description=Main service 2 > > After= ... > > ... > > [Service] > > Type=forking<---------------------- any other type too ? > > ExecStartPre= exec /etc/init.d/sub-service-1 > > ExecStartPre= exec /etc/init.d/sub-service-2 > > ExecStart= /usr/sbin/some-service > > ExecStartPost= > > ExecStartPost= > > ... > > Are there any restrictions on those Pre (and Post) commands ? > > One limitation was already mentioned somewhere in this thread - these > commands must not fork off daemons.
This is interesting. Or perhaps I read too much into your above statement ? We know already that ExecStartPre must contain a command to be executed. > > ExecStartPre= exec /etc/init.d/sub-service-1 Note the 'exec' command, which means "Replace the shell with the given command." with immediate return. How does systemd know what's in the "/etc/init.d/sub-service-1" process, to be able to figure out if any daemon is to be forked off ? > ... > >> Parallelism in systemd happens between multiple units, but never between > >> ExecStart* commands of one unit. > >> Requesting parallelism within one unit seems like over-engineering to > >> me. You can always split your unit to smaller ones if you want > >> parallelism. > > > > But this is what Steve, I believe, wants to do with nfs (to have a bunch of > > services started from the main one, as under current SysV init system, so > > his users are not confused by the startup of all these individual service > > files). > > I proposed a way to do this cleanly using systemd targets elsewhere in > this discussion. Or my example 1 would serve him too ? > ... JB -- devel mailing list devel@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/devel
