Comments on: Merb Master Process

By: Damien

Damien — Wed, 18 Feb 2009 23:44:49 +0000

Just found this article while setting up new merb clusters. How do you guys deal with pid files? (I’m specifying mine manually with -P /…/log/merb.cluster.%s.pid)

I can’t start up a new cluster when one is already running or I get:
FATAL: Merb is already running on port 4000.
pid file: /…/log/merb.cluster.4000.pid, process id is 12345.

If I remove the pid files first, the new app will start, but when I send a SIGINT to the master of the old cluster, all of my new pid files are deleted when the old cluster exits (even though the files have been recreated/updated)

By: Michael Klishin

Michael Klishin — Sun, 12 Oct 2008 02:51:07 +0000

@Hongli,

This forking functionality is optional and can be turned off explicitly. By default it’s off on Windows, MinGW and JRuby.

By: Hongli Lai

Hongli Lai — Thu, 09 Oct 2008 08:50:04 +0000

Nice! But how do you handle Windows and JRuby compatibility? Do you gracefully fallback to the old method on those platforms?

By: Jay Phillips

Jay Phillips — Tue, 07 Oct 2008 22:54:08 +0000

I agree — totally awesome stuff. Keep up the good work, guys.

By: Jörn Zaefferer

Jörn Zaefferer — Sun, 05 Oct 2008 18:46:51 +0000

Just waiting for the port to become available is a great thing. Would be nice to have more servers do that.

I still think “Ruby Enterprise Edition” is a really awkward name, after all the stupid Java Enterprise Edition crap which didn’t help that much in writing web applications… Who comes up with these names?

By: Jason Seifer

Jason Seifer — Sun, 05 Oct 2008 17:20:00 +0000

Amazing stuff. Great work.

By: Jeremy Nicoll

Jeremy Nicoll — Sat, 04 Oct 2008 03:22:52 +0000

Yay! I was just thinking about this stuff today. Glad to hear it’s making it into Merb finally.

By: wycats

wycats — Fri, 03 Oct 2008 19:27:44 +0000

@john it’s just the nature of the new approach. Because we literally wipe all of the state since the original code was loaded (by starting a brand-new process) it’s impossible for state post-file-load to leak back in.

By: Graham Ashton

Graham Ashton — Fri, 03 Oct 2008 17:33:08 +0000

This is great – it’s refreshing to see software that does the simple things right…

By: cheapRoc

cheapRoc — Fri, 03 Oct 2008 16:53:16 +0000

friggin awesome!!!1!