daemon monitoring

[Sergey 'DoubleF' Zaharchenko]

On Mon, 24 Nov 2003 02:11:39 +0100 Alex de Kruijff <freebsd at akruijff.dds.nl> probably wrote:

> Dear Will,
> 
> I've moved you text to the buttom so its more readable for other.
> 
> On Sun, Nov 23, 2003 at 04:46:09PM -0800, Will Prater wrote:
> > On Nov 23, 2003, at 1:57 PM, Alex de Kruijff wrote:
> > >On Sun, Nov 23, 2003 at 10:52:48AM -0800, Will Prater wrote:
> > >>List,
> > >>
> > >>What are most of you using to monitor the running daemons? I have been
> > >>loooking into DJB daemontools which seems appropriate, but are there
> > >>any others that you reccomend?
> > >>
> > >>If DJB's daemontools is the one, could I get some more examples? I am
> > >>primarily trying to keep my mail system online: postfix, cyrus,
> > >>saslauthd, mysql, and spamassassin.
> > >
> > >I would advise Nagios.
> >
> > Sorry, I mispoke. I will be using Nagios to monitor, but I need to make 
> > sure they will restart if there is an error. Will nagios do this as 
> > well?
> > 
> I don't *think* so.
> 
> You could write a sh script (or any other) that does this. It could
> contain this line:
> result=px aux | grep SomeDaemon | wc -l
> 
> If the result is zero than SomeDaemon is not running.

You'd be better off using "ps auxc" here (that is, print only argv[0]):

$ ps aux|grep aux
df       642  0,0  0,4   648  444  p1  R+    8:49     0:00,00 grep aux (sh)
df       641  0,0  0,3   516  392  p1  R+    8:49     0:00,00 ps aux
<which is obviously wrong for your situation, since the "aux"
 `daemon' is not running>
$ ps auxc|grep auxc
<nothing, which is right>
$

And even a better solution would be to pipe the ps output to a [your
favorite scripting language] script to take only the name part of the
output (to avoid clash with usernames/etc.).

> 
> 
> -- 
> Alex
> 
> Articles based on solutions that I use:
> http://www.kruijff.org/alex/index.php?dir=docs/FreeBSD/
> _______________________________________________
> freebsd-questions at freebsd.org mailing list
> http://lists.freebsd.org/mailman/listinfo/freebsd-questions
> To unsubscribe, send any mail to "freebsd-questions-unsubscribe at freebsd.org"
> 


-- 
DoubleF
There is a Massachusetts law requiring all dogs to have their hind legs
tied during the month of April.

-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 187 bytes
Desc: not available
Url : http://lists.freebsd.org/pipermail/freebsd-questions/attachments/20031124/5eefb423/attachment.bin