[keycloak-dev] Facing Issue with Resource Server in Clustered Environment

[Marek Posolda]

Hi,

it's not stateless by default. Data about keycloak authenticated 
principal are saved in HTTP session by default and can be replicated 
across cluster nodes (replication works as long as your application is 
marked as "distributable" in web.xml).

However we support stateless adapter, which won't save anything in HTTP 
Session and won't create HTTP session and JSESSIONID cookie at all 
(unless you're calling httpRequest.getSession() in your own 
application). Instead all the data are saved in cookie.

Some more info in docs: 
http://docs.jboss.org/keycloak/docs/1.1.0.Final/userguide/html/applicationClustering.html#stateless-token-store

Marek

On 30.1.2015 11:26, Bappaditya Gorai (bgorai) wrote:
> Thanks for clarifying.  So, I think adapter has become stateless in 1.1.0.Final. Is my understanding correct?
>
>
> -----Original Message-----
> From: Stian Thorgersen [mailto:stian at redhat.com]
> Sent: Friday, January 30, 2015 1:18 PM
> To: Bappaditya Gorai (bgorai)
> Cc: keycloak-dev at lists.jboss.org
> Subject: Re: [keycloak-dev] Facing Issue with Resource Server in Clustered Environment
>
>
>
> ----- Original Message -----
>> From: "Bappaditya Gorai (bgorai)" <bgorai at cisco.com>
>> To: "Stian Thorgersen" <stian at redhat.com>
>> Cc: keycloak-dev at lists.jboss.org
>> Sent: Friday, 30 January, 2015 8:38:49 AM
>> Subject: RE: [keycloak-dev] Facing Issue with Resource Server in Clustered	Environment
>>
>> We are not talking about clustering for Keycloak server. The setup is
>> for Resource Server (Keycloak Adapter)  in clustered environment.
> Same answer
>
>> Thanks
>> Bappaditya Gorai
>>
>> -----Original Message-----
>> From: Stian Thorgersen [mailto:stian at redhat.com]
>> Sent: Friday, January 30, 2015 12:57 PM
>> To: Bappaditya Gorai (bgorai)
>> Cc: keycloak-dev at lists.jboss.org
>> Subject: Re: [keycloak-dev] Facing Issue with Resource Server in
>> Clustered Environment
>>
>> 1.0.4.Final had very limited support for clustering, please upgrade to
>> 1.1.0.Final and refer to chapter 24 and 25 in the documentation
>> (http://docs.jboss.org/keycloak/docs/1.1.0.Final/userguide/html/clustering.html).
>>
>> ----- Original Message -----
>>> From: "Bappaditya Gorai (bgorai)" <bgorai at cisco.com>
>>> To: keycloak-dev at lists.jboss.org
>>> Sent: Friday, 30 January, 2015 8:22:26 AM
>>> Subject: [keycloak-dev] Facing Issue with Resource Server in Clustered
>>> 	Environment
>>>
>>>
>>>
>>> Hi Team,
>>>
>>> Please find the details on setup and observation below. Please
>>> provide your suggestion on how to overcome this issue. We are using
>>> Keycloak 1.0.4.Final (Adapter & Server).
>>>
>>>
>>>
>>>
>>>
>>> Setup:
>>>
>>> 1. We have brought up Jboss cluster ( Using mod_cluster, httpd )
>>> with
>>> 2 nodes in domain mode and enabled session replication between these nodes.
>>>
>>> 2. Our Recourse server is deployed in this clustered environment
>>> with distributable and Sticky session Off.
>>>
>>>
>>>
>>> Behavior observed :
>>>
>>> During the Authorization/Authentication process ,when Initial
>>> call(Resource
>>> Access) lands on master and next redirection (post Code To token)
>>> falls on slave Adapter is treating it as a new session and
>>> redirecting to login URL again. So we ended up with circular redirection error.
>>> After further investigation seems like session replication delay is
>>> causing adapter to behave this way. As the redirection call happens
>>> very quickly and this results in circular redirection error.
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> NOTE: Sticky Session in mod_cluster environment solves the issue but
>>> it does not provide true load balancing. Therefore we are not
>>> considering Stick session option.
>>>
>>>
>>>
>>>
>>>
>>> Thanks
>>>
>>> Bappaditya Gorai
>>>
>>> _______________________________________________
>>> keycloak-dev mailing list
>>> keycloak-dev at lists.jboss.org
>>> https://lists.jboss.org/mailman/listinfo/keycloak-dev
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