Re: My simple monit rules not working as expected

[Martin Pala]

Hello,

monit runs the scripts in sandbox and strips all environment variables (for 
security reasons) - it sets only the spartan 
"PATH=/bin:/usr/bin:/sbin:/usr/sbin" variable. If your script depends on some 
env. variable, it may fail when executed by monit.

You can log the script output and possible errors for example this way:
--8<--
start program = "/bin/bash -c '/etc/init.d/airtime-liquidsoap start  >> 
/tmp/start.log 2>&1'" with timeout 5 seconds
--8<--

Regards,
Martin


On Mar 22, 2013, at 7:13 PM, Martin Konečný <address@hidden> wrote:

> Hello, I'm monitoring an process that occasionally freezes hard and it is not 
> enough for me to check if it is simply running. I need to connect to the 
> process via telnet and verify it is actually responding to requests. I have 
> the following rules:
> 
>  check process airtime-liquidsoap
>     with pidfile "/var/run/airtime-liquidsoap.pid"
>     start program = "/etc/init.d/airtime-liquidsoap start" with timeout 5 
> seconds
>     stop program = "/etc/init.d/airtime-liquidsoap stop"
>     if mem > 600 MB for 3 cycles then restart
>     if failed host localhost port 1234
>       send "version\r\nexit\r\n"
>       expect "Liquidsoap"
>     with timeout 2 seconds retry 3 for 2 cycles
>     then restart 
> 
> 
> This morning I found that the process had frozen again and stayed in that 
> state, meaning there is something wrong with my monit config?
> 
> My log is repeating non-stop with the following:
> 
> [UTC Mar 22 15:00:33] info     : monit daemon at 255 awakened
> [UTC Mar 22 15:00:33] info     : Awakened by User defined signal 1
> [UTC Mar 22 15:00:33] info     : 'airtime-liquidsoap' monitor action done
> [UTC Mar 22 15:00:43] error    : 'airtime-liquidsoap' process is not running
> [UTC Mar 22 15:00:43] info     : 'airtime-liquidsoap' trying to restart
> [UTC Mar 22 15:00:43] info     : 'airtime-liquidsoap' start: 
> /etc/init.d/airtime-liquidsoap
> [UTC Mar 22 15:00:44] info     : 'airtime-liquidsoap' monitor on user request
> [UTC Mar 22 15:00:44] info     : monit daemon at 255 awakened
> [UTC Mar 22 15:00:48] error    : 'airtime-liquidsoap' failed to start
> [UTC Mar 22 15:00:48] info     : Awakened by User defined signal 1
> [UTC Mar 22 15:00:48] info     : 'airtime-liquidsoap' monitor action done
> [UTC Mar 22 15:00:58] error    : 'airtime-liquidsoap' process is not running
> [UTC Mar 22 15:00:58] info     : 'airtime-liquidsoap' trying to restart
> [UTC Mar 22 15:00:58] info     : 'airtime-liquidsoap' start: 
> /etc/init.d/airtime-liquidsoap
> [UTC Mar 22 15:00:58] info     : 'airtime-liquidsoap' started
> [UTC Mar 22 15:00:58] info     : 'airtime-liquidsoap' monitor on user request
> [UTC Mar 22 15:00:58] info     : monit daemon at 255 awakened
> 
> I had to run
> 
> /etc/init.d/airtime-liquidsoap stop
> 
> and 
> 
> /etc/init.d/airtime-liquidsoap start
> 
> manually to get everything back in order. Any ideas?
> 
> -- 
> Open source radio in the cloud. Get yours now! ---> http://airtime.pro
> 
> 
> 
> 
> Martin Konecny
> Software Developer, Sourcefabric
> address@hidden
> 
> 720 Bathurst St. Suite 203
> M5S 2R4, Toronto, ON, Canada
> +1 (416) 892-8420
> Skype: martin.konecny15
> 
> http://www.sourcefabric.org
> http://www.twitter.com/Sourcefabric
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