Hi Chris,

In that case I shall take a look at putting together a script that
doesn't use the start-stop-daemon. The reason I did use it is I'm
really a novice when it comes to scripts and couldn't think how to
get the PID out of the file easily to do the kill part.

I'll tackle it again in the morning, if you have any ideas then I'd
be greatful.

Thanks
Glyn
 
--- Christopher Browne <cbbrowne at ca.afilias.info> wrote:

> Glyn Astill <glynastill at yahoo.co.uk> writes:
> > Actually.. How do I run strace from with my start script?
> >
> >
> > I'm basically doing:
> >
> > prefix=/usr/local/pgsql
> > PGDATA="/data/postgres"
> > PGUSER="slony"
> > SLONLOG="$PGDATA/slon.log"
> > SLONCONF="-f $PGDATA/slon.conf"
> > SLONPID=="$PGDATA/slon.pid"
> > PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
> > DAEMON="$prefix/bin/slon"
> >
> > start-stop-daemon --start --verbose --pidfile $SLONPID --chuid
> > $PGUSER --exec $DAEMON -- $SLONCONF 
> 
> Actually, I think I now see the problem, at least partly.
> 
> I expect that "start-stop-daemon" isn't invoking slon the way it
> expects to be invoked.
> 
> start-stop-daemon is presumably a function with a bunch of
> parameters
> which then assembles a command line to use to invoke a daemon
> program.
> 
> I'll bet that it *isn't* assembling something looking like:
> 
>    /usr/local/pgsql/bin/slon -f /data/postgres/slon.conf
> 
> I don't know what it *is* building, but I can only assume that it's
> NOT that (and I'm pretty sure I'm right ;-)).
> 
> It may be assembling something like:
> 
>    /usr/local/pgsql/bin/slon -- -f /data/postgres/slon.conf
> 
> (though that is simply a wild guess)
> 
> I haven't tried to "seriously daemonize" the slon; it *isn't* a
> daemon
> in the sense of automatically throwing itself into the background,
> so
> I haven't tried to use tools that expect to work with true daemons.
> -- 
> let name="cbbrowne" and tld="acm.org" in String.concat "@"
> [name;tld];;
> http://www3.sympatico.ca/cbbrowne/linux.html
> Why are men like blenders?
> You need one, but you're not quite sure why. 
> 



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