Re: mod_proxy_balancer: how to define failover (only)/hot standby behavior?

[Jim Jagielski <ji...@jaguNET.com>]

Actually, dev@httpd.apache.org is best, since that is where
the development of this module is being done. I have changed
the email headers accordingly.

A sort of "warm standby" is something that I had planned to
work into the balancer code post 2.2.1.

On Jan 24, 2006, at 11:14 AM, <an...@gzs.de> wrote:

> Hello,
>
> using Apache 2.2.0/mod_proxy_balancer, is it possible to configure a
> proxy balancer with two balancer members, where one of the two only  
> gets
> the requests, if the other one fails?
>
> In mod_jk that was possible using "local_worker_only", but with
> mod_proxy_balancer I have not yet understood how to define such  
> behavior
> (defining "loadfactor=0" would be a way, probably working right away,
> but is definded to be a number between 1 and 100).
>
> As far as I understand at the moment, it is only possible to define an
> "almost-only-hot-standby"-behavior, where the failover-backend gets
> 1/100 of all requests..
>
> Thanks in advance and best regards,
> Andreas
>
> P.S.: I posted the question to the apache-httpd-users mailing list 3
> days ago, but it seems to fit better to here..I would post the answer
> there, if I got one here.
>
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Re: mod_proxy_balancer: how to define failover (only)/hot standby behavior?

[Mladen Turk <mt...@apache.org>]

Jim Jagielski wrote:
> Actually, dev@httpd.apache.org is best, since that is where
> the development of this module is being done. I have changed
> the email headers accordingly.
> 
> A sort of "warm standby" is something that I had planned to
> work into the balancer code post 2.2.1.
>

Like said earlier.

Hot standby already works with mod_proxy balancer.
The 'hot standby' BalancerMember must be initially 'disabled'.
Other members must have 'redirect' option set to the name of
'hot standby' member.

The thing we would need to backport from mod_jk 1.2.14+ is
hot-standby to 'domain'.


Regards,
Mladen.