Rails - Jan 2007 - Cluster 3 mongrel servers residing in different machines (Windows)

Hi All,

Machine A: has Apache 2.2 doing load balancing, also has DB and 8 
mongrel processes I''m using mongrel_cluster . Now, I want to run 
Mongrels on Machine''s B and C (ie Cluster 3 Mongrels in three 
different machines). Is this possible? If possible then, please 
describe me the steps required (I''m using windows machines, and 
already losdt one week :-( )

Best regards,
Santhu


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santhu wrote:
> Hi All,
> 
> Machine A: has Apache 2.2 doing load balancing, also has DB and 8
> mongrel processes I''m using mongrel_cluster . Now, I want to run
> Mongrels on Machine''s B and C (ie Cluster 3 Mongrels in three
> different machines). Is this possible? If possible then, please
> describe me the steps required (I''m using windows machines, and
> already losdt one week :-( )
> 
> Best regards,
> Santhu
I am not sure how you have your setup. However doing multi machine 
clusters with mongrel clusters usually means putting your rails app on 
each machine and starting the cluster. Next you will need to add entries 
to your apache config section where  you are doing your load balancing 
to include the extra machines (remember your weights need to total 1.0 
or 100%). On the app side if you are using sessions then you need to 
ensure they are stored in a central location (such as a DB using AR)or 
else your sessions will be disjoint and your site will not function 
right. For more info on the multi-machine cluster check the mongrel page 
and i think they have links to cluster with Apache httpd.conf examples 
for multi-machine. Also You can find 100''s of guides on how to switch 
your session storage with a simple Google search or by checking the 
Rails Site.

Ben

P.S. I am doing this from memory, so I may be a little off.

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Hi All,

Machine A: has Apache 2.2 doing load balancing, also has DB and 8 
mongrel processes I''m using mongrel_cluster . Now, I want to run 
Mongrels on Machine''s B and C (ie Cluster 3 Mongrels in three 
different machines). Is this possible? If possible then, please 
describe me the steps required (I''m using windows machines, and 
already losdt one week :-( )

Best regards,
Santhu


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Hi Santhu,

You might want to signup for the Rails-deploy group on google.  It''s a
new
group formed to address just this kind of question.

hth,
Bill 



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Hi Santhu,

I think what Darushin explained would be the most common setup.

Quick search turned this up:
http://blog.innerewut.de/articles/2006/04/21/scaling-rails-with-
apache-2-2-mod_proxy_balancer-and-mongrel

We have a hw load balancer and are load balancing apache processes and 
will soon load balance all the monrels using this too. Outside request 
-> LB -> [Apache 1, Apache 2, etc] -> LB -> [Machine 1 Mongrel 1, 
Machine 2 Mongrel 1, etc].

Fredrik

On Jan 29, 10:09 am, "Bill Walton"
<bill.wal...-xwVYE8SWAR3R7s880joybQ@public.gmane.org>
wrote:
> Hi Santhu,
>
> You might want to signup for the Rails-deploy group on google. 
It''s a new
> group formed to address just this kind of question.
>
> hth,
> Bill

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Hi Darushin/Bill ,

First of all thanks for the valuble information. I''m looking for some 
explicit steps required to set up a distributed "mongrel cluster [I 
mean a multi machine set up]" (I''m not not using capastrino :-(
for
the time being) . Please help me
Best regards,
Santhu


On Jan 29, 9:09 pm, "Bill Walton"
<bill.wal...-xwVYE8SWAR3R7s880joybQ@public.gmane.org>
wrote:
> Hi Santhu,
>
> You might want to signup for the Rails-deploy group on google. 
It''s a new
> group formed to address just this kind of question.
>
> hth,
> Bill

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Hi Santhu,

I''m replying just so you don''t think I''m ignoring
you.  There are folks here
on this list, like Darushin, who can help.  It''s way over my head,
though.
If you don''t find the help you need here, the experts are at
rails-deploy.

Best regards, and good luck,
Bill 



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Hi Fredrik,

Thanks for the great help, it started working for me. Now its too late 
here, will continue tommorrow.
Looking forward for more help......

best regards,
Santhosh .TR

On Jan 29, 9:40 pm, "Fredrik"
<fredrik.thures...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> Hi Santhu,
>
> I think what Darushin explained would be the most common setup.
>
> Quick search turned this
up:http://blog.innerewut.de/articles/2006/04/21/scaling-rails-with-
> apache-2-2-mod_proxy_balancer-and-mongrel
>
> We have a hw load balancer and are load balancing apache processes and
> will soon load balance all the monrels using this too. Outside request
> -> LB -> [Apache 1, Apache 2, etc] -> LB -> [Machine 1 Mongrel
1,
> Machine 2 Mongrel 1, etc].
>
> Fredrik
>
> On Jan 29, 10:09 am, "Bill Walton"
<bill.wal...-xwVYE8SWAR3R7s880joybQ@public.gmane.org> wrote:
>
>
>
> > Hi Santhu,
>
> > You might want to signup for the Rails-deploy group on google. 
It''s a new
> > group formed to address just this kind of question.
>
> > hth,
> > Bill- Hide quoted text -- Show quoted text -

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santhu wrote:
> Hi All,
> 
> Machine A: has Apache 2.2 doing load balancing, also has DB and 8
> mongrel processes I''m using mongrel_cluster . Now, I want to run
> Mongrels on Machine''s B and C (ie Cluster 3 Mongrels in three
> different machines). Is this possible? If possible then, please
> describe me the steps required (I''m using windows machines, and
> already losdt one week :-( )
> 
> Best regards,
> Santhu
http://mongrel.rubyforge.org/docs/apache.html

I think that guide should help you get your hardware going. If you have 
issues post them and we will see what we can do.

Ben

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