[keycloak-user] Rebalancing problem while adding a new node to a domain

[John Bartko]

Do I understand correctly that:

- when running a domain clustered<https://keycloak.gitbooks.io/documentation/server_installation/topics/operating-mode/domain.html> deployment

- with relatively unmodified domain.xml/host-master.xml/host-slave.xml configurations

- with a domain controller instance (i.e. --host-config=host-master.xml) with node ID "server-one-master"
- with two existing slave instances (i.e. --host-config=host-slave.xml) with node IDs "server-twoslave" and "server-threeslave"
- the above appears to be working, *but*

- when adding another slave instance (e.g. "server-fourslave")

  1. it does not join the Infinispan cluster with other members?

  2. it does not receive traffic from the balancer on the domain controller?


Problem #1 would be caused by the new instance jgroups subsystem being unable to discover other instances.


Problem #2 *might* be caused by a statically configured/outdated lb-handler in the domain.xml. Be aware the out-of-the-box balancer "exists so that you can easily test drive clustering on your development machine" per the documentation.


You may not be getting responses because the keycloak-user list is not be the most appropriate place for help on these topics. The Wildfly, JGroups, and Infinispan projects' documentation provides a better explanation of these subsystems' more advanced capabilities than would be in the scope of Keycloak's docs to do.


https://docs.jboss.org/author/display/WFLY10/Documentation

http://wildfly.org/gethelp/


http://jgroups.org/ug.html

http://jgroups.org/irc.html


http://infinispan.org/docs/stable/index.html

http://infinispan.org/community/
________________________________
From: keycloak-user-bounces at lists.jboss.org <keycloak-user-bounces at lists.jboss.org> on behalf of Elnaz razmi <elnaz.razmit at gmail.com>
Sent: Saturday, May 27, 2017 4:41:42 AM
To: keycloak-user at lists.jboss.org
Subject: [keycloak-user] Rebalancing problem while adding a new node to a domain

hello
please help me about this problem:

We choose to install domain mode keycloak in our company. We have a load
balancer and three slave nodes. It's working properly with two active node
but when we want to run the third node to connect to load balancer, load
balancer don't rebalance with new node. It just say that node is regestered
but it don't show these lines as we can see in other node connect process :

[org.infinispan.CLUSTER] (remote-thread--p8-t45) ISPN000310: Starting
cluster-wide rebalance for cache work, topology CacheTopology{id=3,
rebalanceId=2, currentCH=ReplicatedConsistentHash{ns = 60, owners =
(2)[master:server-one-master: 30, srvca61-site232:server-threeslave: 30]},
pendingCH=ReplicatedConsistentHash{ns = 60, owners =
(3)[master:server-one-master: 20, srvca61-site232:server-threeslave: 20,
srvca61-site231:server-twoslave: 20]}, unionCH=null,
actualMembers=[master:server-one-master, srvca61-site232:server-threeslave,
srvca61-site231:server-twoslave]}
[org.infinispan.CLUSTER] (remote-thread--p8-t44) ISPN000310: Starting
cluster-wide rebalance for cache loginFailures, topology
CacheTopology{id=3, rebalanceId=2, currentCH=DefaultConsistentHash{ns=80,
owners = (2)[master:server-one-master: 40+0,
srvca61-site232:server-threeslave: 40+0]},
pendingCH=DefaultConsistentHash{ns=80, owners =
(3)[master:server-one-master: 27+0, srvca61-site232:server-threeslave:
27+0, srvca61-site231:server-twoslave: 26+0]}, unionCH=null,
actualMembers=[master:server-one-master, srvca61-site232:server-threeslave,
srvca61-site231:server-twoslave]}
[org.infinispan.CLUSTER] (remote-thread--p8-t42) ISPN000310: Starting
cluster-wide rebalance for cache authorization, topology
CacheTopology{id=3, rebalanceId=2, currentCH=DefaultConsistentHash{ns=80,
owners = (2)[master:server-one-master: 40+0,
srvca61-site232:server-threeslave: 40+0]},
pendingCH=DefaultConsistentHash{ns=80, owners =
(3)[master:server-one-master: 27+0, srvca61-site232:server-threeslave:
27+0, srvca61-site231:server-twoslave: 26+0]}, unionCH=null,
actualMembers=[master:server-one-master, srvca61-site232:server-threeslave,
srvca61-site231:server-twoslave]}
[org.infinispan.CLUSTER] (remote-thread--p8-t39) ISPN000310: Starting
cluster-wide rebalance for cache sessions, topology CacheTopology{id=3,
rebalanceId=2, currentCH=DefaultConsistentHash{ns=80, owners =
(2)[master:server-one-master: 40+0, srvca61-site232:server-threeslave:
40+0]}, pendingCH=DefaultConsistentHash{ns=80, owners =
(3)[master:server-one-master: 27+0, srvca61-site232:server-threeslave:
27+0, srvca61-site231:server-twoslave: 26+0]}, unionCH=null,
actualMembers=[master:server-one-master, srvca61-site232:server-threeslave,
srvca61-site231:server-twoslave]}
[org.infinispan.CLUSTER] (remote-thread--p8-t43) ISPN000310: Starting
cluster-wide rebalance for cache offlineSessions, topology
CacheTopology{id=3, rebalanceId=2, currentCH=DefaultConsistentHash{ns=80,
owners = (2)[master:server-one-master: 40+0,
srvca61-site232:server-threeslave: 40+0]},
pendingCH=DefaultConsistentHash{ns=80, owners =
(3)[master:server-one-master: 27+0, srvca61-site232:server-threeslave:
27+0, srvca61-site231:server-twoslave: 26+0]}, unionCH=null,
actualMembers=[master:server-one-master, srvca61-site232:server-threeslave,
srvca61-site231:server-twoslave]}
[org.infinispan.CLUSTER] (remote-thread--p8-t42) ISPN000336: Finished
cluster-wide rebalance for cache offlineSessions, topology id = 3
[org.infinispan.CLUSTER] (remote-thread--p8-t42) ISPN000336: Finished
cluster-wide rebalance for cache authorization, topology id = 3
[org.infinispan.CLUSTER] (remote-thread--p8-t42) ISPN000336: Finished
cluster-wide rebalance for cache loginFailures, topology id = 3
[org.infinispan.CLUSTER] (remote-thread--p8-t45) ISPN000336: Finished
cluster-wide rebalance for cache work, topology id = 3
[org.infinispan.CLUSTER] (remote-thread--p8-t45) ISPN000336: Finished
cluster-wide rebalance for cache sessions, topology id = 3
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