On 1/30/20 1:34 PM, vishal(a)denovogroup.org wrote:
Iam testing failure scenarios for my cluster. I have 3
monitors. Lets say if mons 1 and 2 go down and so monitors can't form a quorum, how
can I recover?
Are the instructions at followling link valid for deleting mons 1 and 2 from monmap,
https://access.redhat.com/documentation/en-us/red_hat_ceph_storage/1.2.3/ht…
One more question - lets say I delete mons 1 and 2 from monmap. And the cluster has only
mon 3 remaining so mon 3 has quorum. Now what happens if mon 1 and 2 come up? Do they join
mon 3 and so there will again be 3 monitors in the cluster?
The epoch of the monmap has increased by removing mons 1 and 2 from the
map. Only mon 3 has this new map with the new epoch.
Therefor, if mon 1 and 2 boot they see the epoch of mon 3 is newer and
thus won't be able to join.
Wido
> Thanks
> _______________________________________________
> ceph-users mailing list -- ceph-users(a)ceph.io
> To unsubscribe send an email to ceph-users-leave(a)ceph.io
>