[Mailman-Users] Monitor qrunner

[Robert Haack]

What would happen if during the check you told mailman to stop first?  
Could this mess things up or would it be fine?

Robert Haack
Programmer Analyst
North Clackamas School District #12
haack at nclack.k12.or.us



Mark Sapiro wrote:

>Jess Mooers wrote:
>  
>
>>So here is my question:
>>
>>	Is there a way to monitor qrunner to see if it is running?
>>    
>>
>
>If it is running, you will find its pid in data/master-qrunner.pid and
>there will also be two files in locks/, one named master-qrunner and
>containing the line
>
>master-qrunner.host.example.com.pid
>
>And the second named master-qrunner.host.example.com.pid and having the
>same contents where host.example.com is the actual host name and pid
>is the actual pid of the master qrunner process.
>
>Thus there are three files that if present will give you the pid of the
>master qrunner. Of course, if it died a horrible death, the files
>might be left behind, so you also have to check if the pid is running
>and is a mailmanctl process. If the files are missing or the pid
>doesn't exist or is not a python process invoked with a mailmanctl
>command, then the master qrunner isn't running.
>
>  
>
>>	Is there a way to start it automatically if it is not?
>>    
>>
>
>
>You can test all of that in a fairly simple shell script which will run
>
>bin/mailmanctl -s -q start
>
>if the master isn't running and then execute that shell script every 5
>or 10 minutes with cron.
>
>Or you can just run
>
>bin/mailmanctl start
>
>periodically with cron, but that will generate an error each time it is
>done with the master already running.
>
>And don't do 
>
>bin/mailmanctl -s start
>
>without testing first or you'll start multiple masters and qrunners.
>
>--
>Mark Sapiro <msapiro at value.net>       The highway is for gamblers,
>San Francisco Bay Area, California    better use your sense - B. Dylan
>
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