[keycloak-user] warn about node-identifier

[pavel.kokush]

Hello, I am running keycloak in cluster. I see following warn on start:
WARN  [org.jboss.as.txn] (ServerService Thread Pool -- 49) WFLYTX0013: The
node-identifier attribute on the /subsystem=transactions is set to the
default value. This is a danger for environments running multiple servers.
Please make sure the attribute value is unique

Should I care about it? I guess it is about distributed transaction?
Keycloak does not use it?