You can use the new mongrel_cluster gem to startup your mongrels one
at a time, and it will also clear any stale pid files.
Here's an example of part of my monitrc that uses the cluster start.
###
# monitor mongrel four
###
check process mongrel-8003
with pidfile /var/run/mongrel_cluster/mongrel.8003.pid
group mongrel
alert [EMAIL PROTECTED] only on { connection, resource }
start program = "/usr/bin/ruby /usr/bin/mongrel_rails cluster::start --only 80
03 --clean -C /etc/mongrel_cluster/website_mongrel_cluster.yml"
stop program = "/usr/bin/ruby /usr/bin/mongrel_rails cluster::stop --only 8003
-C /etc/mongrel_cluster/website_mongrel_cluster.yml"
if totalmem > 50.0 MB for 5 cycles then restart
if cpu is greater than 60% for 2 cycles then alert
if cpu > 80% for 5 cycles then restart
if failed url
http://localhost:8003/monit/index
and content == 'success'
with timeout 15 seconds then restart
On 3/29/07, Henry <[EMAIL PROTECTED]> wrote:
> Greetings -
>
> I dug around a bit and I couldn't find a definitive answer to this
> question, apologies if it's been covered before. A box running a
> apache 2.2 -> mongrel cluster for a rails app got power cycled at my
> ISP. Unfortunately monit couldn't start the mongrel processes
> because the pid files were still there. Here is my monit config (for
> each mongrel process):
>
> check process myapp_mongrel_8000 with pidfile /data/wwwroot/myapp.com/
> log/mongrel.8000.pid
> start program = "/usr/bin/mongrel_rails start -d -e
> production -p 8000 -a 127.0.0.1 -P log/mongrel.8000.pid -c /data/
> wwwroot/myapp.com --user mongrel --group mongrel"
> stop program = "/usr/bin/mongrel_rails stop -P log/mongrel.
> 8000.pid -c /data/wwwroot/myapp.com"
> if failed host 127.0.0.1 port 8000 protocol http
> and request "/" then alert
> if cpu is greater than 60% for 2 cycles then alert
> if cpu > 80% for 5 cycles then restart
> if loadavg(5min) greater than 10 for 8 cycles then restart
> if 3 restarts within 5 cycles then timeout
>
> Is there some other command line switch I can add to avoid this
> problem? Should I config monit to clear the .pid files first?
>
> Thanks,
> Henry
>
>
>
> _______________________________________________
> Mongrel-users mailing list
> [email protected]
> http://rubyforge.org/mailman/listinfo/mongrel-users
>
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