Hi Don, actually you can use Apache Curator, to create a connection to Zookeeper and then instantiate a LeaderSelector object. If you pass as path the path under which you mesos master nodes register for formaming an ensemble then the that object you can call getLeader() or getParticipants and that is a json object that has an attribute calls isLeader. The participant that has this set to true is the leader. To receive that for Marathon you must search for /marathon/leader again with the same notion. Also take into consideration with LeaderSelector you can be notified for changes of the cluster topology(failure of the leader and re election).
http://curator.apache.org http://curator.apache.org/apidocs/index.html hope it’s clear. kind regards Nikolaos Ballas | Software Development Manager Technology Nexus S.a.r.l. 2-4 Rue Eugene Rupert 2453 Luxembourg Delivery address: 2-3 Rue Eugene Rupert,Vertigo Polaris Building Tel: + 3522619113580 [email protected]<mailto:[email protected]> | nexusgroup.com<http://www.nexusgroup.com/> LinkedIn.com<http://www.linkedin.com/company/nexus-technology> | Twitter<http://www.twitter.com/technologynexus> | Facebook.com<https://www.facebook.com/pages/Technology-Nexus/133756470003189> [cid:19B646FC-B8E7-4F77-BBD3-75DD7B4B5BF7] On 07 Jul 2015, at 15:02, Donald Laidlaw <[email protected]<mailto:[email protected]>> wrote: Has anyone ever developed Java code to detect the mesos masters and leader, given a zookeeper connection? The reason I ask is because I would like to monitor mesos to report various metrics reported by the master. This requires detecting and tracking the leading master to query its /metrics/snapshot REST endpoint. Thanks, -Don
