Comments on: Monitoring Rails Apps: Pulse + More http://blog.hungrymachine.com/2007/10/26/monitoring-rails-apps-pulse-more/ The guys behind LivingSocial Tue, 17 Aug 2010 11:04:25 -0400 http://wordpress.org/?v=2.9.2 hourly 1 By: Will Green http://blog.hungrymachine.com/2007/10/26/monitoring-rails-apps-pulse-more/comment-page-1/#comment-122 Will Green Fri, 26 Oct 2007 20:40:00 +0000 blog.hungrymachine.com/2007/10/26/monitoring-rails-apps-pulse-more#comment-122 So, what does haproxy do if gets back an error? Does it restart your db, or email you? So, what does haproxy do if gets back an error? Does it restart your db, or email you?

]]> By: Nahum Wild http://blog.hungrymachine.com/2007/10/26/monitoring-rails-apps-pulse-more/comment-page-1/#comment-123 Nahum Wild Fri, 26 Oct 2007 20:40:00 +0000 blog.hungrymachine.com/2007/10/26/monitoring-rails-apps-pulse-more#comment-123 I'm not sure about the DB check ay. What happens if all mongrels report having lost access to the DB? Haproxy will send back a 'no response from server' which to me means 'no server here'. But getting an error page isn't nice either... If you rely on errors being emailed/sms'ed from your app as the only way to know about errors (I know lots of sites like this) then the rescue in the pulse action could prevent you from finding out about this at all. So my question is, what do people do when haproxy can't find a server that works? I’m not sure about the DB check ay.

What happens if all mongrels report having lost access to the DB? Haproxy will send back a ‘no response from server’ which to me means ‘no server here’. But getting an error page isn’t nice either…

If you rely on errors being emailed/sms’ed from your app as the only way to know about errors (I know lots of sites like this) then the rescue in the pulse action could prevent you from finding out about this at all.

So my question is, what do people do when haproxy can’t find a server that works?

]]> By: Nahum Wild http://blog.hungrymachine.com/2007/10/26/monitoring-rails-apps-pulse-more/comment-page-1/#comment-124 Nahum Wild Fri, 26 Oct 2007 20:40:00 +0000 blog.hungrymachine.com/2007/10/26/monitoring-rails-apps-pulse-more#comment-124 Also, all filters should be skipped for the pulse action to make it as light weight as possible. If anyone knows how to stop an action from appearing in the log I'd love to know. Also, all filters should be skipped for the pulse action to make it as light weight as possible. If anyone knows how to stop an action from appearing in the log I’d love to know.

]]>