Very Computer

by **SST** » Fri, 30 Mar 2001 23:27:24

Hi

Can I put an entry in inittab with respawn action to execute a script?
I have written a script to check if application is
running, if not, the script restarts it.

Thanks in advance

SST

by **Alberto 'JCL-9000' Varesi** » Sat, 31 Mar 2001 00:22:26

> Hi

> Can I put an entry in inittab with respawn action to execute a script?
> I have written a script to check if application is
> running, if not, the script restarts it.

> Thanks in advance

> SST

Hi
most of the entries of inittab do launch a script. What the script does is up to
it.

In your case you have keep the script running and periodically check the state
of your application, making it a daemon

If you check and exit, then init will relaunch the script as soon as it
discovers it has finished, so you end up with a CPU eater ...

Have a loop in the script that checks and sleeps for a while.
Restart is used to immediately restart daemons in case they crash.

HTH
--
Alberto 'JCL-9000' Varesio -AIX V4.3 System Support- Phone: +39-011-415-8111
EDIST Spa - Via Goito 51/A Riding the world Fax: +39-0270040-8636
10195 Grugliasco (TO) ITALY on a Honda CB500 Cell: +39-349-492-4769

by **Dale Talco** » Fri, 30 Mar 2001 22:31:57

...
>> Can I put an entry in inittab with respawn action to execute a script?
>> I have written a script to check if application is
>> running, if not, the script restarts it.
>most of the entries of inittab do launch a script. What the script does is
>up to it.
...
>Have a loop in the script that checks and sleeps for a while.

You might also consider using AIX's System Resource Controller. It's
designed for this purpose. Check the man pages for mkssys, startsrc,
and stopsrc, and this URL:

http://www.rs6000.ibm.com/doc_link/en_US/a_doc_lib/aixbman/admnconc/s...

--
Dale Talcott, Purdue University Computing Center

by **XP Le** » Fri, 13 Apr 2001 03:59:44

The cron command is also very good for this kind of thing.

> ...
> >> Can I put an entry in inittab with respawn action to execute a script?
> >> I have written a script to check if application is
> >> running, if not, the script restarts it.

> >most of the entries of inittab do launch a script. What the script does
is
> >up to it.
> ...
> >Have a loop in the script that checks and sleeps for a while.

> You might also consider using AIX's System Resource Controller. It's
> designed for this purpose. Check the man pages for mkssys, startsrc,
> and stopsrc, and this URL:

http://www.rs6000.ibm.com/doc_link/en_US/a_doc_lib/aixbman/admnconc/s...
overview.htm

- Show quoted text -

> --
> Dale Talcott, Purdue University Computing Center

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