Monitoring mongrel with monit
- by matnagel
I wrote a monit.d file for mongrels which works in this version:
check process redmine with pidfile /home/redmine/service/redmine.pid
group webservice
start program = "/usr/bin/mongrel_rails start -p 41328 -e production -d --pid /home/redmine/service/redmine.pid --user redmine --group redmine -a 127.0.0.1 -c /home/redmine/app"
stop program = "/usr/bin/mongrel_rails stop --pid /home/redmine/service/redmine.pid -c /home/redmine/app && rm /home/redmine/service/redmine.pid > /dev/null 2>&1
if cpu greater 50% for 2 cycles then alert
if cpu greater 80% for 3 cycles then restart
if totalmem greater 60.0 MB for 5 cycles then restart
if loadavg (5min) greater 4 for 8 cycles then restart
if 3 restarts within 5 cycles then timeout
$ Checking monit control file syntax...
$ Control file syntax OK
I want to also monitor the http response, so I add this line at the end:
if failed port 41328 protocol http with timeout 10 seconds then restart
Now monit complains:
$ Checking monit control file syntax...
$ /etc/monit.d/redmine:16: Error: exceeded maximum number of program arguments 'http'
$ ERROR: CHECK MONIT CONFIG FILE SYNTAX
How do I correctly monitor the port?
