[keycloak-user] Simple user SSO between keycloak instances

I have a pair of keycloak setup as cross datacenter HA as per https://www.keycloak.org/docs/4.0/server_installation/#setup All configuration data is replicated, and changes to session/config are seen immediately in both instances console. However, a user login to /auth/realms/master/account/ cannot re-use the same session between the instances. 1) login to http://host.domain.com:8080/auth/realms/master/account (instance 1) 2) go to http://host.domain.com:9080/auth/realms/master/account (instance 2) prompted to login again although all the cookies are sent to instance2 (AUTH_SESSION_ID, KEYCLOAK_SESSION, KEYCLOAK_IDENTITY) Any help appreciated Thanks a bunch! Regards, BL