Re: Pen for pure fail over setup?

From: Dominic Marks <>
Date: Sun, 26 Mar 2006 16:28:07 +0100

Ulric Eriksson wrote:
> On Sun, 26 Mar 2006, Dominic Marks wrote:
>> Hello,
>> A quick question on pen's weighting feature which I couldn't find the
>> answer to in the documentation. Can pen be configured with two servers
>> to direct requests so that the first server will always receive
>> requests if available and the second server used if the primary server
>> is down.
>> I'd like to run pen in front of apache so I can restart / shut down
>> apache any time I like and have pen deliver any incoming requests to a
>> static html site being served by another lightweight httpd (probably
>> thttpd) with a 'down for maintainence' message.
> Specify an "emergency" server using the -e option.
> -e host:port
> host:port specifies the emergency server to contact
> if all regular servers become unavailable.
> So you run pen something like this:
> pen 80 www1:80 -e www2:80
> Pen will send everything to www1 until it goes down, and then it will
> automatically blacklist www1 and send everything to www2 instead.
> Ulric

Perfect Ulric. I should have seen that. I did read the manual page,
obviously not very well though!

I see that I can use the -b option to configure how long pen will wait
before retrying the primary server. This is exactly what I need.

Thanks for pen :)

Received on Sun Mar 26 2006 - 17:28:16 CEST

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