Hi Chris,

It seems it may not be the start-stop-daemon afterall. I changed my
script to not use it and just start via su. 

E.g. I have this:

su - $PGUSER -c "$SLONDAEMON -f $SLONCONF &" >> "$SLONLOG" 2>&1 <
/dev/null
echo "su - $PGUSER -c '$SLONDAEMON -f $SLONCONF &' >> "$SLONLOG" 2>&1
< /dev/null"

And it echos to the screen the following

su - slony -c '/usr/local/pgsql/bin/slon -f /data/postgres/slon.conf'
>> /data/postgres/
slon.log 2>&1 < /dev/null

Does that look wrong?

Either way, I end up with the following in my log file:

2008-01-10 12:34:59 GMT ERROR  could not open configuration file
"/data/postgres/slon.conf"
2008-01-10 12:34:59 GMT CONFIG main: slon version 1.2.12 starting up
usage: /usr/local/pgsql/bin/slon [options] clustername conninfo

And slon.conf is there:

-rwxrw-rw- 1 slony slony 4513 2008-01-09 17:55
/data/postgres/slon.conf



--- 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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