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From Mohit Anchlia <mohitanch...@gmail.com>
Subject Re: [users@httpd] Active Active Data center and stickyness
Date Tue, 29 Mar 2011 23:17:59 GMT
Are you referrring to GTM or LTM. I have looked into it and even
talked to F5 but currently they don't have this functionality for
Prod.

On Tue, Mar 29, 2011 at 4:16 PM, Igor Cicimov <icicimov@gmail.com> wrote:
> Hi guys,
>
> Just scanned through the thread quickly so not sure if this makes any sense
> but what about F5 source IP stickiness?
>
> Cheers,
> Igor
>
> On Wed, Mar 30, 2011 at 3:34 AM, Mohit Anchlia <mohitanchlia@gmail.com>
> wrote:
>>
>> Currently, the load balancer don't provide the user
>> stickyness/persistence for 'x' amount of time. At this point only
>> option I see is that of creating a custom solution. It looks like
>> there is no good solution.
>>
>> Problem here is User can be directed to any site by load balancer in
>> active active scenario where load is being balanced as 1:1 ratio.
>>
>> Cookie was a good option but doesn;t work for non-browser client where
>> browser connection to server A and then server A then make Http
>> request. So in essence it's the ip of server A that is making the
>> request and there is no way to use cookies in such scenarios.
>>
>> On Tue, Mar 29, 2011 at 7:25 AM, Ben Timby <btimby@gmail.com> wrote:
>> > On Mon, Mar 28, 2011 at 10:42 PM, Mohit Anchlia <mohitanchlia@gmail.com>
>> > wrote:
>> >> Thanks! We are using F5 GTM as global load balancer with LTM. So
>> >> global load balancing is not a problem. Problem is user stickyness
>> >> that need to persist beyond individual session.
>> >>
>> >> I forgot to mention that the problem is that these connections come
>> >> from the servers using http rather than browser and that's why cookies
>> >> here will probably not work.
>> >
>> > Then you will have to review your load balancer docs and see what
>> > options are available and go from there. A common load balancing
>> > method is SOURCE, where the source of the request is hashed to
>> > determine the backend server to direct the request to. This would
>> > ensure the same source always hits the same backend (as long as it is
>> > available). The downside to this method is that upstream proxies hide
>> > the client's IP address and undermine the load balancing effectiveness
>> > of this method. However, you know the user (or group of users) will be
>> > sticky.
>> >
>>
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>
>

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