Re: daemon monitoring

From: Alex de Kruijff (freebsd_at_akruijff.dds.nl)
Date: 11/24/03

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    Date: Mon, 24 Nov 2003 18:46:10 +0100
To: Sergey 'DoubleF' Zaharchenko <doublef@tele-kom.ru>

    On Mon, Nov 24, 2003 at 09:02:29AM +0300, Sergey 'DoubleF' Zaharchenko wrote:
    > On Mon, 24 Nov 2003 02:11:39 +0100 Alex de Kruijff <freebsd@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>
    > $

    Your ride i forgot that one. I'll give an adjustment:
    result=px aux | grep SomeDaemon | grep -v aux | wc -l 

    -- 
Alex
Articles based on solutions that I use:
http://www.kruijff.org/alex/index.php?dir=docs/FreeBSD/
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