Hi,
On 9/18/24 10:00, Szabo, Istvan (Agoda) wrote:
We will reach this number so wonder do we really need 5 mon?
Currently we have 3 collocated mgr/mon on baremetal server with some multiste gw traffic, if needed I'd plan to simply add some mon on vm only.
The current recommended number of MONs is 5.
A new cluster deployed with cephadm wants to start 5 MONs.
When you have 3 MONs and 1 is down there is no room for any failure any
more. A second MON going down takes your cluster offline.
With 5 MONs you can lose 2 and the remaining 3 MONs still have quorum.
Regards
--
Robert Sander
Heinlein Consulting GmbH
Schwedter Str. 8/9b, 10119 Berlin
https://www.heinlein-support.de
Tel: 030 / 405051-43
Fax: 030 / 405051-19
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