I am currently using keycloak 4.5.0 with 2 nodes. I know sessions are stored in infinispan cache and distributed across the cluster with jgroups.
I would like to upgrade to keycloak 8.0.1 but the jgroups version in 4.5.0 and 8.0.1 are not compatible, so I have this error
packet has different version (4.0.11) from ours (4.1.4) and the sessions are not replicated from one old instance to a new one.
Is there something existing to allow to upgrade keycloak without loosing currently opened sessions ?