Re: Application fails to start.

[Martin Pala]

Hello,

can you try following steps?

1.) start your application manualy using your script

2.) provide 'ps -ef | grep A3Server'

3.) provide 'cat /var/run/cA3Server.pid' output

4.) start monit in debug mode ... using '-v' option


I'm not sure yet where the problem is, but i think it may be either:

- race condition between you startup script pidfile creation section and 
monit process start watching thread

- or inconsistency in pidfile and real process pid

Thanks,
Martin

jbelant wrote:
> Hello,
>
> I've just discovered monit, and have been experimenting with it. It 
> looks like a great application, but I am having a problem starting my 
> own applications.
>
> I created a wrapper script, since my app doesn't set a PID file. The 
> script looks like this.
>
> #!/bin/sh
> case $1 in
>   start)
>     cd /home/eminer/cA3Server
>     ( /home/eminer/cA3Server/cA3Server > /dev/tty6 ) &
>     pgrep cA3Server > /var/run/cA3Server.pid
>   ;;
>   stop)
>     kill `cat /var/run/cA3Server.pid`
>     rm /var/run/cA3Server.pid
>   ;;
>   *)
>     echo "usage: rc.a3server {start|stop}" ;;
> esac
>
> I have tried this script with and without the '&' to detach the process, 
> and monit can't control it either way. I can control the application 
> from a console using this script, and it works. Using this script, monit 
> can stop the application, but can't start it. A clip from my monit log 
> looks like this.
>
> [CST Mar 23 10:50:50] Starting monit daemon with http interface at [*:443]
> [CST Mar 23 10:50:50] Starting monit HTTP server at [*:443]
> [CST Mar 23 10:50:50] monit HTTP server started
> [CST Mar 23 10:50:56] 'A3Server' stop: /home/eminer/bin/rc.a3server
> [CST Mar 23 10:53:25] 'A3Server' stop: /home/eminer/bin/rc.a3server
> [CST Mar 23 10:56:45] 'A3Server' stop: /home/eminer/bin/rc.a3server
> [CST Mar 23 10:56:51] 'A3Server' start: /home/eminer/bin/rc.a3server
> [CST Mar 23 10:56:52] monit: pidfile `/var/run/cA3Server.pid' does not 
> contain a valid pidnumber
> [CST Mar 23 10:56:52] monit: pidfile `/var/run/cA3Server.pid' does not 
> contain a valid pidnumber
> [CST Mar 23 10:56:53] monit: pidfile `/var/run/cA3Server.pid' does not 
> contain a valid pidnumber
>
> The PID file is recreated at start, but it is empty. Running the start 
> script manually from a console correctly creates the PID file, with the 
> proper PID.
>
> Here is a clip of my monitrc file.
>
>  check process ssh
>     with pidfile "/var/run/sshd.pid"
>     start program = "/etc/rc.d/rc.sshd start"
>     stop program = "/etc/rc.d/rc.sshd stop"
>     if 2 restarts within 3 cycles then timeout
>
>  check process A3Server
>     with pidfile "/var/run/cA3Server.pid"
>     start program = "/home/eminer/bin/rc.a3server start"
>     stop program = "/home/eminer/bin/rc.a3server stop"
>     if 2 restarts within 3 cycles then timeout
>
> I can use monit to control ssh perfectly. It may be a problem with my 
> control script, but I haven't been able to find the problem. I have 
> searched these archives, but haven't been able to figure this problem out.
>
> Any help would be appreciated.
>
> Thanks,
>
> Jim Belant
>
>
> --
> To unsubscribe:
> http://lists.nongnu.org/mailman/listinfo/monit-general