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Re: [monit] How does start/stop/restart work ?

From: John
Subject: Re: [monit] How does start/stop/restart work ?
Date: Sat, 7 Jun 2008 12:30:41 -0700 (PDT)

--- On Fri, 6/6/08, Jonathan Vanasco <address@hidden> wrote:

> From: Jonathan Vanasco <address@hidden>
> Subject: [monit] How does start/stop/restart work ?
> To: address@hidden
> Date: Friday, June 6, 2008, 10:04 AM
> I have monit configured to restart a website.
> the problem is that i get 30 alerts and all failed
> restarts... and  
> there seems to be no logging whatsoever of the attempt
> aside from  
> 'failed' in the monit log
> so i do not know why monit can restart
> can anyone tell me how i can get better reporting from
> monit , and  
> how the start/stop actually works?
> my system requirements mean i can not have scripts in /etc
> - they  
> need to go in user spaces.  i'm wondering if problems
> have to do with  
> my setup (below).  though I can't tell because of no
> logging.
> check process devsite
>       with pidfile
> "/home/devsite/_current/log/"
>       start program =
> "/home/devsite/_current/production-start"
>       stop program =
> "/home/devsite/_current/production-kill"
>       if failed port 5102 with timeout 5 seconds then
> restart
>       if failed url  then
> restart
>       if 5 restarts within 5 cycles then timeout
>       set alert address@hidden
> /home/devsite/_current/production-start
>       paster serve --pid-file=log/ --log-file=log/
> production.log production.ini &
> /home/devsite/_current/production-kill
>       kill `cat /home/devsite/_current/log/`

If monit can restart which I assume you mean your process, this leads me to 
believe the problem with your start is a permission issue. I use monit to 
monitor my MythTV backend and I had the same problem you were having. I run my 
system as a user instead of root. The reason for my problems was a result of 
monit not being able to write the pid file to the directory that had root 
permissions. I tried doing the same thing you did by moving the pid file to a 
different directory but it still failed since Myth also creates a lock file and 
I couldn't change the directory. I think what's happening is once you start the 
system monit can restart since the pid and lock files have already been 
created. In the end, I found a different start script that allowed me to set 
the user thus it solved my problem.


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