I've had success with Eden Li's patch here:
http://rubyforge.org/tracker/index.php?func=detail&aid=15427&group_id=1306&atid=5147.
Been using it in several production deploys for about 2 months.

If you're interested (and too lazy to apply the patch yourself) you can take
a look at my fork of mongrel that has mongrel_cluster doing rolling restarts
here:
  http://github.com/chuyeow/mongrel/commits/stable_1-1

You need to clone the repos, go into the projects/mongrel_cluster directory,
and run a rake task to package the gem.

Cheers,
Chu Yeow


On Wed, Feb 4, 2009 at 8:58 AM, Elliott Blatt <elli...@hitfix.com> wrote:

> Hello,
>
> I've been trying (unsuccessfully) to hack my mongrel_cluster to re-ststart
> in an alternating manner.
>
> Specifically, this soluiton:
> http://blog.carlmercier.com/2007/09/07/a-better-approach-to-restarting-a-mongrel-cluster/#content
>
> Which means I an call to mongrel_rails cluster::restart to do this:
>
> mongrel_rails start 8001
> mongrel_rails stop 8001
>
> mongrel_rails start 8002
> mongrel_rails stop 8002
>
> mongrel_rails start 8003
> mongrel_rails stop 8003
>
> mongrel_rails start 8004
> mongrel_rails stop 8004
>
> Instead of:
>
> mongrel_rails stop 8001
> mongrel_rails stop 8002
> mongrel_rails stop 8003
> mongrel_rails stop 8004
>
> [.....503....application offline.....]
>
> mongrel_rails start 8001
> mongrel_rails start 8002
> mongrel_rails start 8003
> mongrel_rails start 8004
>
> (yuck!)
>
> It's has been very difficult for me  to figure out where to install the
> hacked mongrel_cluster_ctl that  Carl provides in his blog.
> The execution path is not clear.
>
> Would anyone be willing to give me some ideas?
>
> Thank you,
> Elliott
>
>
> _______________________________________________
> Mongrel-users mailing list
> Mongrel-users@rubyforge.org
> http://rubyforge.org/mailman/listinfo/mongrel-users
>
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