[keycloak-user] [EXTERNAL] Re: Cross-Site Replication

[Stian Thorgersen]

If you disable caches and can have sticky sessions (at least to a specific
DC so session replication isn't needed) then yes. However, you won't be
able to handle much load at all and response times will be bad.

On 24 January 2017 at 04:26, Jacobs, Michael <Michael.Jacobs at nuance.com>
wrote:

> Thanks, we were able to get this working.  However we are interested in
> avoiding JDG.   If we disable the user and realm caches, can we just have 2
> independent clusters each pointing at a database that that replicates via
> multi-master?
>
>
>
> *From:* Stian Thorgersen [mailto:sthorger at redhat.com]
> *Sent:* Tuesday, January 03, 2017 9:48 PM
> *To:* Jacobs, Michael <Michael.Jacobs at nuance.com>
> *Cc:* Marek Posolda <mposolda at redhat.com>; keycloak-user at lists.jboss.org
> *Subject:* Re: [EXTERNAL] Re: [keycloak-user] Cross-Site Replication
>
>
>
> Yes, db replication is still required
>
>
>
> On 3 January 2017 at 18:21, Jacobs, Michael <Michael.Jacobs at nuance.com>
> wrote:
>
> Thanks for posting this, I will model it out.  I assume this solution
> still requires DB replication to keep the underlying persisted data in
> sync.  All that is replicating is the invalidation messages to keep the
> in-memory caches in sync, correct?
>
> MJ
>
> -----Original Message-----
> From: Marek Posolda [mailto:mposolda at redhat.com]
> Sent: Monday, December 19, 2016 1:23 AM
> To: stian at redhat.com; Jacobs, Michael <Michael.Jacobs at nuance.com>
> Cc: keycloak-user at lists.jboss.org
> Subject: [EXTERNAL] Re: [keycloak-user] Cross-Site Replication
>
> On 19/12/16 09:49, Stian Thorgersen wrote:
> > We don't currently support cross-DC replication very well and it is
> > something we are looking at improving in 2017. We're tackling this in
> > stages:
> >
> > 1. Dealing with invalidation caches cross-DC - this is already
> > resolved and is done by using external Infinispan/JDG to replicate
> > invalidation messages cross-DC. I don't think we have documentation on
> > how to set this up yet though.
> I've added some notes for the basic setup https://urldefense.proofpoint.
> com/v2/url?u=https-3A__github.com_keycloak_keycloak_blob_
> master_misc_CrossDataCenter.md&d=DgIC-g&c=djjh8EKwHtOepW4Bjau0lKhLlu-
> DxM1dlgP0rrLsOzY&r=AGRIVkkrGet14litX3vdhf_ykaRtxRlysj94q0l8Lu8&m=
> 50RHm2Vt-LV-vgIORPfIfyuJign-H31DDtcYblp18zM&s=ZCC1joWEUE4PfZt_-SAhN_
> BCytxjKNDdnlCrw-RNT-I&e=
> . This is the setup for 1 external JDG server and with 2 Keycloak nodes,
> which are not in the cluster, but they both talk to the JDG server. Feel
> free to check it, just be aware of all the limitations related to sessions
> (points 2,3,4) .
>
> Marek
> > 2. Support with sessions affinity to a specific DC - as long as all
> > requests for a session is made to the same cluster everything should work
> > already. This is simpler to setup for SAML than for OIDC due to OIDC
> > backchannel requests from both browser and applications for the same
> session
> > 3. Support session replication - this requires a fair bit of rework on
> how
> > we do sessions, including during authentication flows, as currently there
> > is to much updates to a session to fully replicate these cross DCs
> > 4. Support without session affinity - allow requests to go to any DC for
> > any session
> >
> > On 16 December 2016 at 20:23, Jacobs, Michael <Michael.Jacobs at nuance.com
> >
> > wrote:
> >
> >> Greetings,
> >>
> >> I am looking at setting up Cross-site replication for multiple Keycloak
> >> clusters, possibly using DB replication.  I found this question asked
> back
> >> in May 2016, with no reply.
> >>
> >> https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.
> jboss.org_pipermail_keycloak-2Duser_2016-2DMay_006142.html&d=DgIC-g&c=
> djjh8EKwHtOepW4Bjau0lKhLlu-DxM1dlgP0rrLsOzY&r=AGRIVkkrGet14litX3vdhf_
> ykaRtxRlysj94q0l8Lu8&m=50RHm2Vt-LV-vgIORPfIfyuJign-H31DDtcYblp18zM&s=
> srtVXCGiBzVH8qe714EJTC85zvlVAUUUzueaTpZYwAs&e=
> >>
> >> Does anyone know the best way to set this up?
> >>
> >>
> >> MJ
> >>
> >>
> >> _______________________________________________
> >> keycloak-user mailing list
> >> keycloak-user at lists.jboss.org
> >> https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.
> jboss.org_mailman_listinfo_keycloak-2Duser&d=DgIC-g&c=
> djjh8EKwHtOepW4Bjau0lKhLlu-DxM1dlgP0rrLsOzY&r=AGRIVkkrGet14litX3vdhf_
> ykaRtxRlysj94q0l8Lu8&m=50RHm2Vt-LV-vgIORPfIfyuJign-H31DDtcYblp18zM&s=
> pm1gthZUvEyOoVFr9xS18pOZVqCSTIStLXU9Dm46Eac&e=
> >>
> > _______________________________________________
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> djjh8EKwHtOepW4Bjau0lKhLlu-DxM1dlgP0rrLsOzY&r=AGRIVkkrGet14litX3vdhf_
> ykaRtxRlysj94q0l8Lu8&m=50RHm2Vt-LV-vgIORPfIfyuJign-H31DDtcYblp18zM&s=
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>