Hi,

I think you are right. I was too focused on the following line in docs: "A cluster will run fine with a single monitor; however,*a single monitor is a single-point-of-failure*." I will try to add another monitor. Hopefully, this will fix my issue.

Anyway, I think that "ceph status" or "ceph health" should report at least something in such state. Its quite weird that everything stops...

Thank you
Jiri

On 1/01/2015 15:51, Lindsay Mathieson wrote:
On Thu, 1 Jan 2015 03:46:33 PM Jiri Kanicky wrote:
Hi,

I have:
- 2 monitors, one on each node
- 4 OSDs, two on each node
- 2 MDS, one on each node
POOMA U here, but I don't think you can reach quorum with one out of two
monitors, you need a odd number:

http://ceph.com/docs/master/rados/configuration/mon-config-ref/#monitor-quorum

Perhaps try removing one monitor, so you only have one left, then take the
node without a monitor down.



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