[ale] RedHat chkconfig & init scripts

[Jeff Lightner]

Apparently I am not explaining it well or you're not getting it.  It
does NOT call the script at all during the shutdown so nothing in the
script will be executed on the stop.

Anyway I think I've found the answer though I need to test it:
In /etc/rc script it has:
# Check if the subsystem is already up.
     subsys=${i#/etc/rc$runlevel.d/K??}
     [ -f /var/lock/subsys/$subsys -o -f /var/lock/subsys/$subsys.init ]
\ 
          || continue

I had seen detail about creating and removing a lock file in the script
I modeled from but didn't use that as I though the lock was specific to
the daemon that was being started for that process.   From a Google
search it appears /etc/rc itself is using the lock to determine whether
or not it needs to stop.  If there is no lock file it doesn't stop
because it assumes it never started.

One has to add syntax in the start routine to create the lock file
(touch to create an empty file) then syntax in the stop to remove the
lock file.   It appears the lock file's main purpose is to prevent
restarting items that were started in other run levels if you switch to
another run level that has the S##name script for starting.


-----Original Message-----
From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of
To: ale at ale.org
James P. Kinney III
Sent: Friday, March 30, 2007 10:34 AM
To: Atlanta Linux Enthusiasts
Subject: Re: [ale] RedHat chkconfig & init scripts

OK. So do the manual process below:

cd /etc/rc6.d
ln -s ../init.d/pc1_mid_tier K01pc1_mid_tier

now, edit the pc1_mid_tier script. Add a pair of lines
echo "STOPPING pc1_mid_tier NOW" 
sleep 5s
to the stop case block. Verify that the line
. /etc/rc.d/init.d/functions
is at the top of the script after the comments and before anything else.

Now try the reboot.

On Fri, 2007-03-30 at 09:27 -0400, Jeff Lightner wrote:
> In my original description I noted that I manually ran it successfully
> for both start and stop from command line.
> 
> It succeeds on start after boot.
> 
> It does not even TRY to stop.   Again I don't believe the problem is
> with the script - I believe the script is never even being attempted
on
> the stop during shutdown. 
> 
> -----Original Message-----
> From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of
> James P. Kinney III
> Sent: Thursday, March 29, 2007 9:07 PM
> To: Atlanta Linux Enthusiasts
> Subject: Re: [ale] RedHat chkconfig & init scripts
> 
> On Thu, 2007-03-29 at 16:01 -0400, Jim Popovitch wrote:
> > On Thu, 2007-03-29 at 15:55 -0400, Jeff Lightner wrote:
> > > Yep.  I have it as K01pc1_mid_tier.   - the next thing to be
stopped
> is
> > > K03dataeng and it runs fine.
> > > 
> > > On start it is the last thing started (S99pc1_mid_tier).
> > 
> > Couple of other things to check...
> > 
> > Is the execute bit set on /etc/init.d/pc1_mid_tier ?
> 
> What happens if you manually run /etc/init.d/pc1_mid_tier stop ?
> If the app does not stop, the problem is on the init script stop case
> statement.
> > 
> > Can you execute /etc/rc3.d/S99pc1_mid_tier
> > and /etc/rc3.d/K019pc1_mid_tier?  (to make sure the symlinks are
> > correct)
> > 
> > Does /etc/init.d/pc1_mid_tier depend on any env variables that might
> not
> > exist at shutdown?  Things like $PATH, $LANG, etc.
> > 
> > -Jim P.
> > 
> > _______________________________________________
> > Ale mailing list
> > Ale at ale.org
> > http://www.ale.org/mailman/listinfo/ale
-- 
James P. Kinney III          
CEO & Director of Engineering 
Local Net Solutions,LLC        
770-493-8244                    
http://www.localnetsolutions.com

GPG ID: 829C6CA7 James P. Kinney III (M.S. Physics)
<jkinney at localnetsolutions.com>
Fingerprint = 3C9E 6366 54FC A3FE BA4D 0659 6190 ADC3 829C 6CA7