Last modified: 2013-12-04 18:58:15 UTC
Elasticsearch monitoring should graph the number of active shards, number of active primary shards, etc. Basically all number you can get from _cluster/health.
Change 96796 had a related patch set uploaded by Manybubbles: Graph components of Elasticsearch health https://gerrit.wikimedia.org/r/96796
Change 96796 merged by Ottomata: Graph components of Elasticsearch health https://gerrit.wikimedia.org/r/96796