On 2/20/07, Charles Brian Quinn <[EMAIL PROTECTED]> wrote:
>
> We use both monit and nagios -- I find nagios hard to setup, every
> time, but it sure does work well. On the purely rails and mongrel
> side of things, I use a custom capistrano task to setup monit along
> with mongrel_cluster to manage mongrels. It looks a little something
> like this:
>
> desc "Setup monit daemon monitoring"
> task :setup_monit do
>
> monit_configuration = render :template => <<-EOF
> # This monit configuration was generated dynamically
> #
> EOF
>
> (0..mongrel_servers-1).each do |server|
> monit_configuration +=<<-EOF
> check process mongrel-#{mongrel_start_port + server} with pidfile
> #{deploy_to}/current/log/mongrel.#{mongrel_start_port + server}.pid
> group mongrel
> start program = "/usr/local/bin/ruby /usr/local/bin/mongrel_rails
> start -d -e production -p #{mongrel_start_port + server} -a 127.0.0.1
> -l #{deploy_to}/current/log/mongrel.log -P
> #{deploy_to}/shared/log/mongrel.#{mongrel_start_port + server}.pid -c
> #{deploy_to}/current"
> stop program = "/usr/local/bin/ruby /usr/local/bin/mongrel_rails
> stop -P #{deploy_to}/shared/log/mongrel.#{mongrel_start_port +
> server}.pid"
> if totalmem > 100.0 MB for 5 cycles then restart
> if failed port #{mongrel_start_port + server} protocol http with
> timeout 10 seconds then restart
>
> EOF
> end
>
> put monit_configuration, "/etc/monit.d/rails.conf"
>
> end
>
> You'll need to add the appropriate --user and --group in there too,
> otherwise they start back up as root. I've been experimenting with
> that timeout -- it's pretty low... Also probably could use the
> addition of Bradley Taylor's mongrel_cluster --cleanup with single
> mongrels specified....
>
> Let us (rails-deployment) know what you go for.
>
> shameless plug -- I also use heartbeat for simple monitoring of my
> site and making sure important rails actions are still responding in a
> timely manner: http://heartbeat.highgroove.com/
>
> cheers
> --
> Charles Brian Quinn
> self-promotion: www.seebq.com
> highgroove studios: www.highgroove.com
> slingshot hosting: www.slingshothosting.com
> main: 678.389.9462 fax: 678.826.0969
>
> Ruby on Rails Bootcamp at the Big Nerd Ranch
> Intensive Ruby on Rails Training:
> http://www.bignerdranch.com/classes/ruby.shtml
>
Thanks for the advice here...we have nagios installed, just not
configured at all yet.
Also, I *knew* someone had developed a very simple monitoring app like
Heartbeat, I just couldn't remember the name. Thanks for reminding me
off it before I went a wrote something myself =). It seems the
Railsday SVN doesn't work anymore, is the code still available and
open to play with or extend?
- Rob
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