PVE v3 Cluster, one node crash, road to Cluster v4

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morfair

Renowned Member
Feb 20, 2013
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Hi all!!

I have Proxmox v3 cluster with three nodes. Today one node crash, all data at disk was lost. I restored all guests at other nodes. Now I should reinstall node, and I want go to v4 Cluster.

How to proceed? On this page https://pve.proxmox.com/wiki/Proxmox_VE_4.x_Cluster wrote:

NOTE: It is not possible to mix Proxmox VE 3.x and earlier with Proxmox VE 4.0 cluster
Click to expand...

Because of this, I have a question. I should install v3 Cluster and then upgrade from v3 to v4 (https://pve.proxmox.com/wiki/Upgrade_from_3.x_to_4.0), or I can just install v4?

Sorry for my English!
 
Last edited:
morfair said:
Hi all!!

I have Proxmox v3 cluster with three nodes. Today one node crash, all data at disk was lost. I restored all guests at other nodes. Now I should reinstall node, and I want go to v4 Cluster.

How to proceed? On this page https://pve.proxmox.com/wiki/Proxmox_VE_4.x_Cluster wrote:



Because of this, I have a question. I should install v3 Cluster and then upgrade from v3 to v4 (https://pve.proxmox.com/wiki/Upgrade_from_3.x_to_4.0), or I can just install v4?

Sorry for my English!
Click to expand...

I would update the existing pve 3 node to pve4, then do a fresh install on the other node and create the cluster.
 
You can install the crashed Node with a Fresh PVE4 and migrate (offline, via backup and restore for example) ones node VMs to the new PVE 4 Node.
Then you could upgrade the node which has now no VMs on it, and repeat the process for the third node.

There is some post on our mailing list which gives instructions for a live upgrade ( http://pve.proxmox.com/pipermail/pve-devel/2015-October/017680.html ) but I hadn't time to try it.

At the end all nodes must be on the same Version (PVE4) how you upgrade them is not really important, choose the way which suits your needs best.
And carefully read the wiki, missed steps result in errors!
 
t.lamprecht said:
You can install the crashed Node with a Fresh PVE4 and migrate (offline, via backup and restore for example) ones node VMs to the new PVE 4 Node.
Then you could upgrade the node which has now no VMs on it, and repeat the process for the third node.

There is some post on our mailing list which gives instructions for a live upgrade ( http://pve.proxmox.com/pipermail/pve-devel/2015-October/017680.html ) but I hadn't time to try it.

At the end all nodes must be on the same Version (PVE4) how you upgrade them is not really important, choose the way which suits your needs best.
And carefully read the wiki, missed steps result in errors!
Click to expand...

Ok, another question. When I install Fresh PVE4 on crashed node, Should I add the node to exists v3 Cluster, or I must first uprade other node to v4?
 
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