[keycloak-user] Does Keycloak need sticky session at the load balancer?

Hello Keycloakers, I have some doubts regarding Keycloak and load balancers. I set up two keycloak replicas to provide HA. To start them I am using “./standalone.sh --server-config=standalone-ha.xml”. I am assuming that they will use multicast to replicate information between nodes, right? Then, I set up a load balancer layer using Apache HTTPD and AJP connector via 8009 port. To make everything work I needed to use sticky session; otherwise, the login would never happen. I am fine with the sticky session, however, if I stop one of the replicas where the user is logged in, when the user access Keycloak again, he/she is asked to present the credentials as if he/she was not logged in the other Keycloak replica. Is that the expected behavior? Is there some troubleshooting or test that I can perform to check if replication is being executed? -- Rafael Weingärtner