[Plone-docs] Where's the "Sticky sessions and mod_proxy_balancer" Plone Knowledge Base article?

[Ricardo Dias Marques]

Hi all,

I believe this is my First Post in the Plone Mailing Lists, so Hello
everyone! :)

I have read the following (great) Plone Knowledge Base (KB) article
about "High Availability" and "Load Balancing" for Zope and Plone,
authored by "Goldmund, Wyldebeast & Wunderliebe":

HA-Cluster with loadbalancing for Zope (and Plone)
http://plone.org/documentation/kb/ha-load-balanced-cluster-for-zope-and-plone

Halfway down that web page, there's the following sentence:

"Note that this configuration does not add 'sticky sessions' to the
balancing. To achieve this, we refer to another howto on this site."

The "another howto" expression in the above sentence is a hyperlink to
the following URL:

http://plone.org/documentation/kb/sticky-sessions-and-mod_proxy_balancer

However, if I click on that link I get the following error message:

----------------------------------------
We’re sorry, but there seems to be an error…

The error has been logged as entry number 1314810706.590.767316766604.

If you need to report this to the Site Administration, please include
this entry number in your message.
----------------------------------------

So, can anyone confirm that there still is a "Sticky sessions and
mod_proxy_balancer" Plone KB article / howto and tell me if the URL
has changed, please? I tried entering some search queries in the
"Search" box of the Plone.org web site, but I couldn't find it! :(

Thanks in advance! :)

Best wishes,
Ricardo Dias Marques
lists AT ricmarques DOT net

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[Alex Clark]

Hi

On 8/31/11 1:26 PM, Ricardo Dias Marques wrote:
> Hi all,
>
> I believe this is my First Post in the Plone Mailing Lists, so Hello
> everyone! :)

Welcome!

>
>
> I have read the following (great) Plone Knowledge Base (KB) article
> about "High Availability" and "Load Balancing" for Zope and Plone,

> authored by "Goldmund, Wyldebeast& Wunderliebe":

>
> HA-Cluster with loadbalancing for Zope (and Plone)
> http://plone.org/documentation/kb/ha-load-balanced-cluster-for-zope-and-plone
>
>
> Halfway down that web page, there's the following sentence:
>
> "Note that this configuration does not add 'sticky sessions' to the
> balancing. To achieve this, we refer to another howto on this site."
>
>
> The "another howto" expression in the above sentence is a hyperlink to
> the following URL:
>
> http://plone.org/documentation/kb/sticky-sessions-and-mod_proxy_balancer
>
>
> However, if I click on that link I get the following error message:
>
> ----------------------------------------
> We’re sorry, but there seems to be an error…
>
> The error has been logged as entry number 1314810706.590.767316766604.
>
> If you need to report this to the Site Administration, please include
> this entry number in your message.
> ----------------------------------------
>
>
>
> So, can anyone confirm that there still is a "Sticky sessions and
> mod_proxy_balancer" Plone KB article / howto and tell me if the URL
> has changed, please? I tried entering some search queries in the
> "Search" box of the Plone.org web site, but I couldn't find it! :(

It's been marked obsolete, and is therefore private (i.e. not visible to
anonymous). And the error you are seeing is a PloneHelpCenter bug, it
should display a login screen instead of an error.

Alex

>
>
> Thanks in advance! :)
>
> Best wishes,
> Ricardo Dias Marques
> lists AT ricmarques DOT net
>
> ------------------------------------------------------------------------------
> Special Offer -- Download ArcSight Logger for FREE!
> Finally, a world-class log management solution at an even better
> price-free! And you'll get a free "Love Thy Logs" t-shirt when you
> download Logger. Secure your free ArcSight Logger TODAY!
> http://p.sf.net/sfu/arcsisghtdev2dev

--
Alex Clark · http://aclark.net

[Ricardo Dias Marques]

Hi Alex,

On Wed, Aug 31, 2011 at 22:05, Alex Clark <acl...@aclark.net> wrote:

> [The page about "Sticky Sessions and mod_proxy_balancer" -
> http://plone.org/documentation/kb/sticky-sessions-and-mod_proxy_balancer -
> has] been marked obsolete, and is therefore private (i.e. not visible to

> anonymous). And the error you are seeing is a PloneHelpCenter bug, it
> should display a login screen instead of an error.

Thank you very much for the feedback. I have now registered a username
in the Plone.org web site and tried to access the page
http://plone.org/documentation/kb/sticky-sessions-and-mod_proxy_balancer
while logged in with my new account, but I got the same error message.

Concerning this matter of "Sticky Sessions", I have found the
following "Stack Exchange" discussion that includes a post from Hanno
Schlichting (Plone 4 Release Manager) confirming that this is
"obsolete" in Plone 4:

apache - Are sticky sessions needed when load-balancing Plone 3.3.5? -
Stack Overflow
http://stackoverflow.com/questions/5650716/are-sticky-sessions-needed-when-load-balancing-plone-3-3-5

Here's what it seems to me to be the most relevant paragraph in that discussion:

" In Plone 3 there is still some code left in the object creation
logic which does indeed use sessions. It's there to support a
widget-like interface, where object creation is spread across multiple
actual requests. This support and the code is gone in Plone 4. "

Thanks again for replying Alex! :)

Best wishes,
Ricardo Dias Marques
lists AT ricmarques DOT net

------------------------------------------------------------------------------
Special Offer -- Download ArcSight Logger for FREE!
Finally, a world-class log management solution at an even better
price-free! And you'll get a free "Love Thy Logs" t-shirt when you
download Logger. Secure your free ArcSight Logger TODAY!
http://p.sf.net/sfu/arcsisghtdev2dev

[Alex Clark]

Hi

On 8/31/11 7:50 PM, Ricardo Dias Marques wrote:
> Hi Alex,
>
> On Wed, Aug 31, 2011 at 22:05, Alex Clark<acl...@aclark.net> wrote:
>
>> [The page about "Sticky Sessions and mod_proxy_balancer" -
>> http://plone.org/documentation/kb/sticky-sessions-and-mod_proxy_balancer -
>> has] been marked obsolete, and is therefore private (i.e. not visible to
>> anonymous). And the error you are seeing is a PloneHelpCenter bug, it
>> should display a login screen instead of an error.
>
> Thank you very much for the feedback. I have now registered a username
> in the Plone.org web site and tried to access the page
> http://plone.org/documentation/kb/sticky-sessions-and-mod_proxy_balancer
> while logged in with my new account, but I got the same error message.

Right, because even as a registered user you don't have permission to
see it.

>
> Concerning this matter of "Sticky Sessions", I have found the
> following "Stack Exchange" discussion that includes a post from Hanno
> Schlichting (Plone 4 Release Manager) confirming that this is
> "obsolete" in Plone 4:
>
> apache - Are sticky sessions needed when load-balancing Plone 3.3.5? -
> Stack Overflow
> http://stackoverflow.com/questions/5650716/are-sticky-sessions-needed-when-load-balancing-plone-3-3-5
>
> Here's what it seems to me to be the most relevant paragraph in that discussion:
>
> " In Plone 3 there is still some code left in the object creation
> logic which does indeed use sessions. It's there to support a
> widget-like interface, where object creation is spread across multiple
> actual requests. This support and the code is gone in Plone 4. "
>
>
> Thanks again for replying Alex! :)

You bet!

Alex

>
> Best wishes,
> Ricardo Dias Marques
> lists AT ricmarques DOT net
>
> ------------------------------------------------------------------------------
> Special Offer -- Download ArcSight Logger for FREE!
> Finally, a world-class log management solution at an even better
> price-free! And you'll get a free "Love Thy Logs" t-shirt when you
> download Logger. Secure your free ArcSight Logger TODAY!
> http://p.sf.net/sfu/arcsisghtdev2dev

--
Alex Clark · http://aclark.net