# Pbl

**URL:** <https://www.ruby-forum.com/t/pbl/85556>\
**Category:** Deployment\
**Created:** [February 14, 2007, 3:44pm UTC](https://www.ruby-forum.com/t/pbl/85556 "2007-02-14T15:44:38Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![tapH20guru](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/7feea3/32.png) [@tapH20guru](https://www.ruby-forum.com/u/tapH20guru)\
**Post date:** [February 14, 2007, 3:44pm UTC](https://www.ruby-forum.com/t/pbl/85556/1 "2007-02-14T15:44:38Z")

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I’ve seen Pen and Pound discussed, but has anyone used PBL (http://  
plb.sunsite.dk/ha.html) in their rails setup?

-Scott

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**Author:** ![tapH20guru](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/7feea3/32.png) [@tapH20guru](https://www.ruby-forum.com/u/tapH20guru)\
**Post date:** [February 14, 2007, 5:01pm UTC](https://www.ruby-forum.com/t/pbl/85556/2 "2007-02-14T17:01:53Z")

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On Wed, 14 Feb 2007 14:43:16 -0000  
“tapH20guru” [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote:

> I’ve seen Pen and Pound discussed, but has anyone used PBL (http://  
> plb.sunsite.dk/ha.html) in their rails setup?

Yeah I saw this recently too. It looks really interesting, but I don’t  
have anything to test it on at the moment.

FYI: The current status on Pound and Pen though is they’re only good  
for small setups at around 3-5 mongrels. I’ve ran into a few folks who  
were trying to push Pound toward 30-40 or more and it was killing them.

–  
Zed A. Shaw, MUDCRAP-CE Master Black Belt Sifu

> **[Zed A. shaw](https://zedshaw.com/)**
>
> Personal essays and writings by Zed A. Shaw.

[http://www.awprofessional.com/title/0321483502](http://www.awprofessional.com/title/0321483502) – The Mongrel Book  
[http://mongrel.rubyforge.org/](http://mongrel.rubyforge.org/)  
[http://www.lingr.com/room/3yXhqKbfPy8](http://www.lingr.com/room/3yXhqKbfPy8) – Come get help.

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**Author:** ![tapH20guru](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/7feea3/32.png) [@tapH20guru](https://www.ruby-forum.com/u/tapH20guru)\
**Post date:** [February 14, 2007, 5:55pm UTC](https://www.ruby-forum.com/t/pbl/85556/3 "2007-02-14T17:55:58Z")

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On 2/14/07, tapH20guru [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote:

> I’ve seen Pen and Pound discussed, but has anyone used PBL (http://  
> plb.sunsite.dk/ha.html) in their rails setup?

It’s not suitable for load balancing mongrel, unless you want to have  
an application spread over many machines with one mongrel per server.  
The config accepts multiple IP addresses, but you can only add one  
port to connect to. I just tested it out and confirmed that:

servers\_ip 127.0.0.1  
servers\_port 8000 8001 8002

does not work.

– Wes

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**Author:** ![tapH20guru](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/7feea3/32.png) [@tapH20guru](https://www.ruby-forum.com/u/tapH20guru)\
**Post date:** [February 15, 2007, 12:37pm UTC](https://www.ruby-forum.com/t/pbl/85556/4 "2007-02-15T12:37:53Z")

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Or you can just have multiple IPs on one machine. But this seems a  
very odd limitation =)

Vish

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<div class="post-metadata">

**Author:** ![tapH20guru](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/7feea3/32.png) [@tapH20guru](https://www.ruby-forum.com/u/tapH20guru)\
**Post date:** [February 15, 2007, 10:00pm UTC](https://www.ruby-forum.com/t/pbl/85556/5 "2007-02-15T22:00:11Z")

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Sure, but I doubt that would work very well with mongrel\_cluster.  
You’d have to write something that started each mongrel on a different  
IP.  
Bleh.

– Wes