Hi,

On 26.2.2016 09:33, Stian Thorgersen wrote:
This should work just fine without sticky sessions.

Sure, but there may be latencies or so between nodes which may bring problems, and it is always hard to troubleshoot this kind of problems. Sticky session generally lowers probability of this kind of operational problems, this is why I like them and use them ;-) But correctly configured replication is necessary even in case of sticky sessions to have failover.

We also don't support sticky sessions at the moment as there's no cookie to stick on. We're going to look into supporting sticky sessions soon.

Some loadbalancers are able to make sticky session on his owns, even if application itself do not provide any cookie. We use this on RHD website, we have F5 loadbalancer which handles sticky sessions for us (I think it creates his own cookie), and is able correctly failover when keycloak node dies.

So don't tell your users that Keycloak doesn't support sticky sessions at all, it works with sticky sessions correctly if provided by loadbalancer by some way not relying on cookie provided by Keycloak itself. ;-)

Vlastimil


On 26 February 2016 at 09:29, Vlastimil Elias <velias@redhat.com> wrote:
What about configuring Loadbalancer to use sticky sessions?

Vlastimil

On 25.2.2016 16:10, Peter Krivansky wrote:

Hello,

 

I have a Keycloak cluster with two servers, in front of each Keaycloak is Apache running.

 

LB

/\

  Host A    Host B

 

Now, Host-A and Host-B are in different subnets, due to this design we are running jGroups via TCP.

Now everything is working fine, except for the Keycloak Admin console, once a user tries to log in, they get for a milisecond in to the Admin console, but then they get redirected to the login page immediately.

When I disable Host-A or Host-B on the Loadbalancer, (new sessions will land only on Hst-A or Host-B) the Login to Keycloak Admin Console will work normally.

During the immediate redirection there is only this one WARNING in the Server.log:

 

15:41:42,886 WARN  [org.jboss.resteasy.core.ExceptionHandler] (default task-10) Failed executing GET /admin/serverinfo: org.jboss.resteasy.spi.UnauthorizedException: Bearer

         at org.keycloak.services.resources.admin.AdminRoot.authenticateRealmAdminRequest(AdminRoot.java:156)

         at org.keycloak.services.resources.admin.AdminRoot.getServerInfo(AdminRoot.java:209)

         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

         at java.lang.reflect.Method.invoke(Method.java:498)

         at org.jboss.resteasy.core.ResourceLocatorInvoker.createResource(ResourceLocatorInvoker.java:81)

         at org.jboss.resteasy.core.ResourceLocatorInvoker.createResource(ResourceLocatorInvoker.java:60)

         at org.jboss.resteasy.core.ResourceLocatorInvoker.invoke(ResourceLocatorInvoker.java:102)

         at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:356)

         at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:179)

         at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:220)

         at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:56)

         at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:51)

         at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)

         at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:86)

         at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:130)

         at org.keycloak.services.filters.KeycloakSessionServletFilter.doFilter(KeycloakSessionServletFilter.java:61)

         at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:60)

         at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:132)

         at io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:85)

         at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)

         at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)

         at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)

         at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

         at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131)

         at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)

         at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

         at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)

         at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)

         at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:58)

         at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:72)

         at io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50)

         at io.undertow.security.handlers.SecurityInitialHandler.handleRequest(SecurityInitialHandler.java:76)

         at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

         at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)

         at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

         at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

         at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:282)

         at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:261)

         at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:80)

         at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:172)

         at io.undertow.server.Connectors.executeRootHandler(Connectors.java:199)

         at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:774)

         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

         at java.lang.Thread.run(Thread.java:745)

 

I attached my domain.xml

Have I missed something, or what did I wrong? 

 

With Kind regards Peter



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-- 
Vlastimil Elias
Principal Software Engineer
Developer Portal Engineering Team

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-- 
Vlastimil Elias
Principal Software Engineer
Developer Portal Engineering Team