Re: dependent processes starts simultaneously

[Stanisław Trytek]

On Tue, 23 May 2006 13:51:56 +0200, Martin Pala <address@hidden>  
wrote:

> Stanisław Trytek wrote:
> >  Using monit I found some problems with starting dependent processes.
> > Starting depandent processes is being done simultaneously (or  
> > sequentialy but without waiting for the start script to finish).
> > Searching through monit general list I have found out that it is monit  
> > intended characteristic.
> > I want to monitor some processes where both dependiecies and waiting  
> > for process start are required.
> > I have to start the next process only in case I know the previous one  
> > is up (becouse it takes some time to initialize some processes).
> > Starting/ restarting processes causes a big mess now. Sometimes not  
> > knowing why I have even two instances of the same process.
> >  My questions are:
> > Have anybody ever tried to deal with that problem?
> > Is it possible to force monit to wait for dependent processes to start  
> > as it is during stoping sequence? Mayby some changes in source code is  
> > enough?
>
> This problem was discussed in february:
> http://lists.gnu.org/archive/html/monit-general/2006-02/msg00005.html
>
> The solution could probably be to use the service related testing rules  
> definition for making sure that the parent is up and running => the  
> procedure could look like:
>
>   1.) start the parent
>   2.) check that the parent is running and there are no errors (using  
> monit service check interface)

If it was possible to check errors it would be great. It seems to be a  
good solution.
Sorry, it is not clear for me. "Monit service check interface" - I can not  
imagine how to use it to check errors?

>   3.) if there are no errors, continue with the childs
>
>
> Martin

Thank you for help.

Stanislaw