So I followed this blog to get get an apache.god set up:
http://blog.blenderbox.com/2008/03/11/monitoring-apache-with-god/
I stop apache by hand and then start it with god -c apache.god. god
status indicates that apache is up. All seems good. The problem is
when I stop apache with sudo /etc/init.d/apache2 stop by hand, god
tries to start it (and seems to succeed since I can get to my site
still) but then if I watch the log it keeps trying to start it every
20 seconds... It seems to be based on the start_grace value.
Originally the author had 10.seconds so I upped it to 20.seconds but
it doesn't seem to matter what value I use.
The only things I added were a flapping condition and I changed the
commands since I don't have apachectl installed to use /etc/init.d/
apache2. Here is my config and below that is output from god log
apache:
%w{80}.each do |port|
God.watch do |w|
w.name = "apache"
w.interval = 30.seconds # default
w.start = "/etc/init.d/apache2 start"
w.stop = "/etc/init.d/apache2 stop"
w.restart = "/etc/init.d/apache2 restart"
w.start_grace = 20.seconds
w.restart_grace = 20.seconds
w.start_if do |start|
start.condition(:process_running) do |c|
c.interval = 5.seconds
c.running = false
end
end
# lifecycle
w.lifecycle do |on|
on.condition(:flapping) do |c|
c.to_state = [:start, :restart]
c.times = 5
c.within = 5.minute
c.transition = :unmonitored
c.retry_in = 10.minutes
c.retry_times = 5
c.retry_within = 2.hours
end
end
end
end
# god log apache
I [2009-03-16 16:27:26] INFO: apache Loaded config
I [2009-03-16 16:27:26] INFO: apache move 'unmonitored' to 'up'
I [2009-03-16 16:27:26] INFO: apache moved 'unmonitored' to 'up'
I [2009-03-16 16:27:26] INFO: apache [trigger] process is not running
(ProcessRunning)
I [2009-03-16 16:27:26] INFO: apache move 'up' to 'start'
I [2009-03-16 16:27:26] INFO: apache start: /etc/init.d/apache2 start
I [2009-03-16 16:27:46] INFO: apache moved 'up' to 'up'
I [2009-03-16 16:27:46] INFO: apache [trigger] process is not running
(ProcessRunning)
I [2009-03-16 16:27:46] INFO: apache move 'up' to 'start'
I [2009-03-16 16:27:46] INFO: apache start: /etc/init.d/apache2 start
I [2009-03-16 16:28:06] INFO: apache moved 'up' to 'up'
I [2009-03-16 16:28:06] INFO: apache [trigger] process is not running
(ProcessRunning)
I [2009-03-16 16:28:06] INFO: apache move 'up' to 'start'
I [2009-03-16 16:28:06] INFO: apache start: /etc/init.d/apache2 start
I [2009-03-16 16:28:26] INFO: apache moved 'up' to 'up'
I [2009-03-16 16:28:26] INFO: apache [trigger] process is not running
(ProcessRunning)
I [2009-03-16 16:28:26] INFO: apache move 'up' to 'start'
I [2009-03-16 16:28:26] INFO: apache start: /etc/init.d/apache2 start
I [2009-03-16 16:28:46] INFO: apache moved 'up' to 'up'
I [2009-03-16 16:28:46] INFO: apache [trigger] process is not running
(ProcessRunning)
I [2009-03-16 16:28:46] INFO: apache move 'up' to 'start'
I [2009-03-16 16:28:46] INFO: apache start: /etc/init.d/apache2 start
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