cluster upgrade

Hi Everyone! I am reading about Proxmox VE as planning to have it for our hosting (Appreciate the team for such a good admin guide - I haven't finished it yet) Now my question is, can I start with a single server PVE and later connect more servers and make clustered PVE without any downtime? If...

Hello. Is anybody know how can I safely add third node from drbd-cluster to pve-cluster? If I change redundancy level and nodes list in storage.cfg for drbd-storage, will it break guest systems, that work on this storage? Do I need to turn off all before make changes? or I can do it on the fly?

Hi all, wow, that was a busy hour or so ... On our 8-Node cluster (with ceph) I have started to update the nodes one by one. I've done this by migrating all VM (no LXC in use) to other nodes an then triggering the update and a restart from the web interface. This procedure did work many times...

Hi, I have a 5 Node production cluster (with local) storage. So i have already read the wiki entry about that. https://pve.proxmox.com/wiki/Upgrade_from_3.x_to_4.0 I have already done an in-Place testupgrade with a seperate machine ... without cluster... works great. My Question is on this...