Re: Who actually gets the TERM signal in "runsvctrl down"?

[Lloyd Zusman <ljz@asfast.com>]

I just answered my own question.  See below ...


Lloyd Zusman <ljz@asfast.com> writes:

> Charlie Brady <charlieb-smarden-supervision@budge.apana.org.au> writes:
>
>> On Fri, 25 Jun 2004, Lloyd Zusman wrote:
>>
>> [ ... ]
>>
>> Being started and being restarted are both covered by what is done in the 
>> run script. If you need something special done when you stop a daemon 
>> (which usually is not the case), then with runit you can provide a 
>> "finish" script.
>
> But look more carefully at the script fragment I wrote in the previous
> message: I want to do something different between "restart" and
> "graceful" ...
>
>   restart:   before sending the signal to httpd, clean up some
>              subdirectories under /tmp that are used in certain web apps
>              on my site; and only _then_ send the signal to httpd (do
>              this before "start", also, but that's a trivial case)
>
>   graceful:  just send the signal to httpd and _do_ _not_ clean up any
>              directories, because in apache, a "graceful" restart keeps
>              connections open, etc., and I don't want existing
>              data to be lost
>              
> How do I cause my /tmp directories to get cleaned up during "restart",
> but not during "graceful"?

Hmm ... maybe I can do it this way (almost the same as what you had
suggested, but with a slight difference for "graceful") ...

Use something akin to your suggested "run" script ...

  #! /bin/sh
  exec 2>&1
  do_your_cleanup_stuff
  TZ=xxxxx exec chpst -P /usr/sbin/httpd -DNO_DETACH

Then ...

  start:     runsvctrl u apache
  (causes cleanup stuff to run)

  stop:      runsvctrl d apache
  (no cleanup stuff gets run)

  graceful:  runsvctrl 1 apache
  (no cleanup stuff gets run)

  restart:   runscvtrl t apache; runsvctrl u apache
  (causes cleanup stuff to run during the second command)


-- 
 Lloyd Zusman
 ljz@asfast.com
 God bless you.