Multiple Ceph Clusters on Same Network

[Mike.S]

I have a production 4-node Proxmox 4.x/Ceph cluster. Each node has one 10GB NIC connected to a 10GB switch. I do not have a 10GB router.

Proxmox network is 10.100.50.0/24
Ceph network is 10.100.60.0/24

I am building a new Proxmox 5.x/Ceph cluster. I built the new Proxmox cluster on the same network as the old (10.100.50.0/24). I'm about to create the new Ceph cluster using a different Ceph cluster name on the SAME network as the production Ceph cluster (10.100.60.0/24). Before I do this I want to be certain that having 2 clusters on the same network will not cause a problem with my production system. My goal is to be able to mount the old production Ceph cluster on the new Proxmox 5.x cluster and copy vm's to the new Ceph bluestore cluster. Once copied, I will upgrade the old 4-nodes and add them to the new Proxmox/Ceph cluster.

Again, just looking to confirm that 2 Ceph clusters on same network is not an issue.

 

[Alwin]

Again, just looking to confirm that 2 Ceph clusters on same network is not an issue.

This should work, usually each cluster has a different ID (fsid) and IP networks are different, AFAIU.

 

[Mike.S]

I actually ended up creating a separate vlan for the new ceph network and multi-homed each node. New bluestore cluster is now in production. I'm seeing almost double the write speeds over the old filestore.

 

[sb-jw]

So its work for you? Could you give us here more Informationen how you do it or on what you have to pay attention?

This might help other People, if they have the same Problem.