On 4/1/21 18:58, Leandro Roggerone wrote:
Hi guys :
Hi,
Im preparing my second proxmox box to create my first cluster. IT does not contain any usefull data yet , so I can play aorund a little bit. Have some questions. Is it possible to create a cluster with only two boxes ?
yes
I understood it is possible , but can not move VMs without service disruption.
if you mean HA, yes you need at least 3 nodes or 2 nodes + a quorum device, also the storage needs to be avaiable on both nodes
live migration still works even with 2 nodes, and even with local storage
And if I want to move VMs without services disruption I need a third box. What is ceph storage for ? what is ZFS pool for ?
what do you mean? ceph is distributed, redundant, software defined storage zfs is a type of local filesystem and disk management
In case I need I can add it on any of my available bays o any box ? Do pve boxes need to be on same network subnet ?
generally no, i think, but it makes it easier
I have two datacenters , I was thinking in the idea to install them on each location just for redundancy. Lets supose network connection performance is optimal ... Is there any problem with that ?
i'd advise against that. our clustering stack uses corosync, which needs low latency links to work properly
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