The ceph mons should never be started with an even number in quorum.
The desired state should always be an odd number of mons to ensure
a healthy majority quorum. The operator now rejects a request for
an even number of mons.
If there are not a sufficient number of nodes for mons to be on a
unique host, the operator also returns an early error instead of
getting stuck waiting for a pending mon. This is not foolproof since
there might be fewer available nodes for the mons, but at least it
is a quick check for the common case.
Signed-off-by: Travis Nielsen <tnielsen@redhat.com>
Travis Nielsen
c7e0338d5e