Ceph-users is the proper ML to post questions like this.
On Thu, Dec 20, 2018 at 2:30 PM Joao Eduardo Luis <joao@xxxxxxx> wrote:
On 12/20/2018 04:55 PM, João Aguiar wrote:
> I am having an issue with "ceph-ceploy mon”
>
> I started by creating a cluster with one monitor with "create-deploy new"… "create-initial”...
> And ended up with ceph,conf like:
> ...
> mon_initial_members = node0
> mon_host = 10.2.2.2
> ….
>
> Later I try to deploy a new monitor (ceph-deploy mon create node1), wait for it to get in quorum and then destroy the node0 (ceph-deploy mon destroy node0).
Is the new monitor forming a quorum with the existing monitor? If not,
then you won't have monitors running when you remove node0.
Does ceph-deploy remove the mon being destroyed from the monmap? If not,
you'll have two monitors in the monmap, and you'll need a majority to
form quorum; for a 2 monitor deployment that means you'll need 2
monitors up and running.
> Result: Ceph gets unresponsive.
This is the typical symptom of absence of a quorum.
-Joao
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