Re: Monit remote servers custom process

[Martin Pala]

Hi,

Monit <= 5.7 purges the environment variables and sets only spartan 
PATH="/bin:/usr/bin:/sbin:/usr/sbin" + set of MONIT_* variables (documented in 
the manual) ... this was done to run the program in a sandbox and not pass any 
extra informations from parent process environment to child, but caused 
problems in some cases, where the script depends on environment settings.

=> Monit upgrade to 5.8 or later should fix it ... alternatively you can load 
the environment in the script or define required environment variables and/or 
use absolute path.

Regards,
Martin


On 31 Jul 2014, at 10:43, Gokulnath Arjunan <address@hidden> wrote:

> Hi,
>  
> I have setup monit with check_program. I am running monit on local server and 
> monit check the program at regular intervel. it is stopping the tomcat server 
> if  thread count is more than my threshold but not starting the tomcat server 
> back.  Getting below log in monit.log. Please suggest what I am missing here.
>  
> [UTC Jul 31 08:14:59] error    : 'ThreadCount' '/data/scripts/jmx.sh' failed 
> with exit status (35) -- no output from program
> [UTC Jul 31 08:14:59] info     : 'ThreadCount' trying to restart
> [UTC Jul 31 08:14:59] info     : 'ThreadCount' stop: 
> /opt/tomcat-9620/bin/shutdown.sh
> [UTC Jul 31 08:14:59] info     : 'ThreadCount' start: 
> /opt/tomcat-9620/bin/startup.sh
>  
> Monit configuration:
>  
> check program ThreadCount with path "/data/scripts/jmx.sh"
> start program = "/opt/tomcat/bin/startup.sh"
> stop program = "/opt/tomcat/bin/shutdown.sh"
> if status > 35 then restart
>  
>  
> jmx.sh
>  
> #!/bin/bash
> TC=`/usr/local/nagios/libexec/check_jmx -U 
> service:jmx:rmi:///jndi/rmi://localhost:9652/jmxrmi -O 
> java.lang:type=Threading -A ThreadCount | cut -d '=' -f2 | cut -d '|' -f1`
> if [ $TC -gt 35 ]
> then
> exit $TC
> else
> exit $TC
> fi
>  
> Thanks
> Gokul
>  
>  
> From: address@hidden [mailto:address@hidden On Behalf Of Hearns, John
> Sent: Friday, May 23, 2014 7:25 PM
> To: This is the general mailing list for monit
> Subject: RE: Monit remote servers custom process
>  
> 
> 
> Hi,
> 
> I am planning to use monit for below purpose. Can I achieve below cases by 
> using monit? I installed monit and trying to find the right configuration. 
> But I am unable to get the configuration for remote server monitor.  
> 
> Monitor remote server custom process without pid file from monit server.
> Restart remote server custom process from monit server based on 
> error/exception. 
> Alert remote server custom process if it is down.
> 
> 
> Yes, you can do this.
> 
> Use a 'check program'
> 
> 
> check program remote-service with path "/usr/local/bin/remote-service"
> 
> 
> The script in /usr/local/bin will ssh into the remote system and perform the 
> checks you want,
> Perhaps by running the 'pgrep' command.
> If the script sees that the remote service is OK 
> exit0
> 
> If the remote service is down
> exit 1
> 
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