From: John Wilkins Date: Wed, 21 Aug 2013 18:01:48 +0000 (-0700) Subject: doc: Clarified quorum requirements. X-Git-Tag: v0.69~84 X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=576dce03f0eeedeefdb4619de92e2dbe3241b6b4;p=ceph.git doc: Clarified quorum requirements. fixes: #5412 Signed-off-by: John Wilkins --- diff --git a/doc/rados/deployment/ceph-deploy-mon.rst b/doc/rados/deployment/ceph-deploy-mon.rst index fcd25756e647..a6123e596cad 100644 --- a/doc/rados/deployment/ceph-deploy-mon.rst +++ b/doc/rados/deployment/ceph-deploy-mon.rst @@ -13,10 +13,9 @@ only install one monitor per host.** For high availability, you should run a production Ceph cluster with **AT LEAST** three monitors. Ceph uses the Paxos algorithm, which requires a -consensus among the majority of monitors in a quorum. You can establish a -monitor quorum with only one monitor; however, you can not determine a majority -with two monitors. A majority of monitors must be counted as such: 1:1, 2:3, -3:4, 3:5, 4:6, etc. +consensus among the majority of monitors in a quorum. With Paxos, the monitors +cannot determine a majority for establishing a quorum with only two monitors. A +majority of monitors must be counted as such: 1:1, 2:3, 3:4, 3:5, 4:6, etc. See `Monitor Config Reference`_ for details on configuring monitors.