High availability with Caudium

Hello,

Does someone have some experience with using Caudium in a
redondant
environnement?

My idea is to have a farm of Caudium serving my websites
hidden behind
some devices. The idea is that i could shutdown some server
in case of
maintenance, and a server would automatically be parked in
case of
failure.

Since i'm using 2nd level virtual hosting, with everything
stored in a
database, i guess it would be easy to achieve once i'll
store PHP
sessions and HTTP logs in a database too.

I think i remember Kiwi had a BigIP for testing, and James
had a project
named "cabal" that could do this.

Would that work out of the box? What kind of device would
you use for
load-balancing the servers?

-- 
Bertrand

As long as you're synchronizing your configurations, you
shouldn't  
have any problems. If you don't replicate session
information, you'll  
want to use "sticky sessions" where the load
balancer will prefer one  
app server for a given user session until it becomes
unavailable. If  
you are replicating the session information, you don't need
this at  
all, but I find it makes troubleshooting much easier, as
once you  
figure out where a client is being directed, it stays
there.

I've got some ideas for maintaining a cluster of caudium  
configurations. It  might even make it into 1.6. For those 

interested, I think we might be having a session about
scaling up at  
the Pike Conference in Copenhagen.

Bill

> Hello,
>
> Does someone have some experience with using Caudium in
a redondant
> environnement?
>
> My idea is to have a farm of Caudium serving my
websites hidden behind
> some devices. The idea is that i could shutdown some
server in case of
> maintenance, and a server would automatically be parked
in case of
> failure.
>
> Since i'm using 2nd level virtual hosting, with
everything stored in a
> database, i guess it would be easy to achieve once i'll
store PHP
> sessions and HTTP logs in a database too.
>
> I think i remember Kiwi had a BigIP for testing, and
James had a  
> project
> named "cabal" that could do this.
>
> Would that work out of the box? What kind of device
would you use for
> load-balancing the servers?
>
> -- 
> Bertrand

On Mon, Oct 15, 2007 at 12:46:40PM -0400, H. William
Welliver III wrote:
> I think we might be having a session about scaling up
at  
> the Pike Conference in Copenhagen.

that would be a good isea. the roxen guys will surely give
some pointers
about there experience with that.

greetings, martin.
-- 
cooperative communication with sTeam      -     caudium,
pike, roxen and unix
offering: programming, training and administration   - 
anywhere in the world
--
pike programmer   working in new zealand       
open-steam.org|webhaven.co.nz
unix system-      bahai.or.at                       
iaeste.(tuwien.ac|or).at
administrator     (caudium|gotpike).org                     
    is.schon.org
Martin Bähr       http://www.iaeste.or
.at/~mbaehr/

Yep, I think that was the idea. Actually, I think that there
are a  
number of people that will have some good thoughts. Even if
you're  
not a hard-core pike developer, I highly recommend the
conference as  
a good opportunity for anyone out there to get their
questions  
answered and suggestions considered. I'll be there, and I
think a few  
others from the Caudium crew will be there, so make your
travel plans  
now! 

Conference website: http://dk2007.gotpike.org

Bill

On Oct 15, 2007, at 9:04 PM, Martin Bähr wrote:

> On Mon, Oct 15, 2007 at 12:46:40PM -0400, H. William
Welliver III  
> wrote:
>> I think we might be having a session about scaling
up at
>> the Pike Conference in Copenhagen.
>
> that would be a good isea. the roxen guys will surely
give some  
> pointers
> about there experience with that.

On Tue, Oct 16, 2007 at 10:04:26AM +0200, Bertrand LUPART
wrote:
> - Eclipse Pike plugin
> - Common Pike-based application server API and MVC
programming
> - Frameworks: Fins, AJAX, RXML... Some other people
shows consistent
> tools: http://www.symfony-pr
oject.com/
> - Revision system hosting for various projects

sounds good. 
i'll try to take a look at webpage managment with git, and
see if i can
contribute an example for that.

greetings, martin.
-- 
cooperative communication with sTeam      -     caudium,
pike, roxen and unix
offering: programming, training and administration   - 
anywhere in the world
--
pike programmer   working in new zealand       
open-steam.org|webhaven.co.nz
unix system-      bahai.or.at                       
iaeste.(tuwien.ac|or).at
administrator     (caudium|gotpike).org                     
    is.schon.org
Martin Bähr       http://www.iaeste.or
.at/~mbaehr/

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