Using Upstart like old fashion init script

Question

How can I use Upstart and have the same we use to have by using "# Should-Start:" at the BEGIN INIT INFO of the init script?

Is it there any way I can tailor the "start on started" based on a variable?

Answer 1

There is no direct equivalent in Upstart terms. If you want to do something similar, you can put your optional deps into pre-start section in your job.

Example (add to your conf file):

pre-start script
  set +e
  start <dep1>
  start <dep2>
  start <dep3>
  start <dep4>
end script

That makes Upstart try starting said optional services and if they are missing, the error is ignored.