[keycloak-dev] Operational monitoring of Keycloak server

Hi, as we deployed KC to production mode for https://developers.redhat.com we started to think about operational monitoring, for example from Nagios or other systems of this type. KC user guide doesn't contain any chapter covering this topic, also no any success over google search, so looks like KC doesn't have any solution for this yet. But I believe this is an important area which must be solved when KC is used for production. I can imagine monitoring of JDBC connection if JPA is used, monitoring of Mongo connection if used as store, monitoring of LDAP connection if LDAP federation is used etc. Also some statistics like numbers of active sso session, number of logins per minute etc should be provided there. Monitoring is not about Keycloak core itself, it should be available for extension developers also. For example we implemented own UserFederationProvider which calls backend REST services. We should be able to add info about this integration into monitoring endpoint to be able to catch problems with this REST API. It should be probably implemented same way as used by underlying WildFly/EAP (JPA/JDBC is probably available for monitoring there). I'm not sure if JMX is used there still or if some new framework is available for it. Or KC should use some form of KC REST API for this, which should be extended by additional info from KC extensions? What do you think? Vlastimil P.S we have https://issues.jboss.org/browse/RHD-552 for Red Hat Developer instance of KC -- Vlastimil Elias Principal Software Engineer jboss.org Development Team