[PVE-User] Ceph MON quorum problem

[Humberto Jose De Sousa]

Hi. 

You could try the qdevice: https://pve.proxmox.com/pve-docs/chapter-pvecm.html#_corosync_external_vote_support 

Humberto 

De: "Fabrizio Cuseo" <f.cuseo at panservice.it> 
Para: "pve-user" <pve-user at pve.proxmox.com> 
Enviadas: Sexta-feira, 13 de setembro de 2019 16:42:06 
Assunto: [PVE-User] Ceph MON quorum problem 

Hello. 
I am planning a 6 hosts cluster. 

3 hosts are located in the CedA room 
3 hosts are located in the CedB room 

the two rooms are connected with a 2 x 10Gbit fiber (200mt) and in each room i have 2 x 10Gbit stacked switch and each host have a 2 x 10Gbit (one for each switch) for Ceph storage. 

My need is to have a full redundancy cluster that can survive to CedA (or CedB) disaster. 

I have modified the crush map, so I have a RBD Pool that writes 2 copies in CedA hosts, and 2 copies in CedB hosts, so a very good redundancy (disk space is not a problem). 

But if I loose one of the rooms, i can't establish the needed quorum. 

Some suggestion to have a quick and not too complicated way to satisfy my need ? 

Regards, Fabrizio 


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