Re: monit configuration problem

[Martin Pala]

Hi,

Monit currently ensures the correct start/stop/restart order in 
dependency chain, but doesn't wait for the parents to come up (i.e. 
soft-dependency). We plan to improve it in the future and provide 
hard-dependency as well.

However, it is possible to configure monit the way you asked for - you 
can use the exec action for failed and recovery events, for example:

--8<--
  check process mydb with pidfile /var/run/mydb.pid
    start program '...'
    stop program '...'
    if failed port 3306 protocol mysql then exec '/bin/monit unmonitor 
myjava' else if recovered then exec '/bin/monit monitor myjava'

  check process myjava with pidfile /var/run/myjava.pid
    start program '...'
    stop program '...'
--8<--

In the future multiple actions per rule should be also supported, thus 
it will provide alternative to hard-dependency as well 
(http://www.tildeslash.com/monit/doc/next.php#21)


Martin


Efrat Malka wrote:
> Hi,
>
> I have configured my monit configuration file with 2 entries: DB 
> connectivity and a Java program, where the *Java *program* depends *on 
> the* DB connectivity*.
>
>  
>
> Currently I use the restart option if the DB connectivity is lost. 
> However, this poses a problem, since once the connectivity fails and 
> restarts, the Java program restarts as well (whereas at this point, the 
> connectivity fails…).
>
>  
>
> It would have been optimal for me to use for the “if failed” of the DB 
> connectivity, stop for the Java program, and add an “if successful” 
> condition to the DB connectivity, with Java start. Is this at all 
> possible? If not, is there an alternative for that, so that my java 
> program won’t keep restarting itself?
>
>  
>
>  
>
> **Thanks,**
>
> **Efrat Malka**
>
> **BigBand Networks**
>
> (
>
>         
>
> 03-607-1207
>
> 7
>
>         
>
> 03-607-1222
>
> ,
>
>         
>
> address@hidden <mailto:address@hidden>_
>
> ý
>
>         
>
> _www.bigbandnet.com <http://www.bigbandnet.com/>_
>
>  
>
>