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From Igor Cicimov <icici...@gmail.com>
Subject Re: [users@httpd] Active Active Data center and stickyness
Date Wed, 30 Mar 2011 00:07:58 GMT
Also the difference between GTM and LTM is that GTM enables fail-over
between geographically different sites and for LTM that is possible only for
local sites. Nothing to do with the persistence feature.

On Wed, Mar 30, 2011 at 10:59 AM, Igor Cicimov <icicimov@gmail.com> wrote:

> Strange because a quick search gives me this
>
>
> http://devcentral-sea.f5.com/Community/GroupDetails/tabid/1082223/asg/50/aft/26947/showtab/groupforums/Default.aspx
>
>
> On Wed, Mar 30, 2011 at 10:17 AM, Mohit Anchlia <mohitanchlia@gmail.com>wrote:
>
>> 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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>> Project.
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>> >
>> >
>>
>> ---------------------------------------------------------------------
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>>
>>
>

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