upstart after rc

I run daemontools from upstart. I ran into a problem that one of my daemons needed dbus to be working, but upstart was starting daemontools before rc had a chance to start it. The bigger problem is that CentOS 6 is only a partial conversion to upstart in that it still uses rc files for most things.

I used to have start on runlevel [345] in /etc/init/daemontools.conf but that means daemontools is started at the same time (or even before) as rc.

I tried start on started rc but that means daemontools runs after rc is launched, not after rc has finished.

The solution is a custom event :

cat <<'SH' >/etc/init.d/rc-done
#!/bin/sh
#
# rc-done Emits events when rc has finished or nearly
#
# chkconfig:   2345 99 01

[ -e /etc/sysconfig/rc-done ] && . /etc/sysconfig/rc-done

case "$1" in
    start)
 initctl emit rc-done
        ;;
    stop)
 initctl emit rc-start
        ;;
    *)
        echo $"Usage: $0 {start|stop}"
        exit 2
esac
exit $?
SH
chmod +x /etc/init.d/rc-done
chkconfig --add /etc/init.d/rc-done

Now we put start on rc-done into daemontools.conf

Of course the interesting part is initctl emit rc-done. We could just as easily have put that at end of rc.local.