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diff --git a/_posts/2023-08-04-upgrading-my-proxmox.md b/_posts/2023-08-04-upgrading-my-proxmox.md new file mode 100644 index 0000000..b1c6109 --- /dev/null +++ b/_posts/2023-08-04-upgrading-my-proxmox.md @@ -0,0 +1,39 @@ +--- +layout: post +title: Upgrading my Proxmox +date: 2023-08-04 17:03 +0200 +lang: en +categories: tech +--- + +So yeah, today I was [upgrading my Proxmox from v7 to v8](https://pve.proxmox.com/wiki/Upgrade_from_7_to_8). + +Due to the recommendations in their wiki I decided against doing a live upgrade +and instead went with reinstalling the new version. + +So... What do I do with the existing machines in the meantime? I could just do a backup and +restore... But I wanted to try out the cluster thing. Reasoning was "if something goes wrong, +I still need my DNS server" (which runs in a Proxmox container). With the cluster +feature, I can move the VMs / containers to a different PC. + +So, I first set up a VM on my Linux PC (with libvirt / KVM / QEMU), installed Proxmox +there, created a cluster from my current "main Proxmox", and joined the new machine. +All via the web interface, which went very neat. + +After I migrated the containers over, I shut down my "main Proxmox" and wanted to +remove it from the cluster (to avoid problems when re-adding it later). +So I followed [the Wiki](https://pve.proxmox.com/wiki/Cluster_Manager), +ssh'ed to my now "backup Proxmox", happily wanted to execute `pvecm delnode srv-proxmox` +with the result of ... `cluster not ready - no quorum?`. Huh? Wait, what? + +Well, turns out, Proxmox by default seems to assume enterprise setups, and no enterprise +has just two machines ;-). No, I didn't read about the specifics, but apparently you need +at least two online machines at any given time when you have a cluster. I looked it up, +after executing `pvecm expected 1` I was able to remove the soon-to-be-upgraded machine from +the cluster. + +So, the installation itself went smooth. After the installation, I joined my "main Proxmox" +back into the cluster, ssh'ed into it, executed a `pvecm updatecerts` as mentioned in the Wiki. + +Currently, I still have a cluster, although I may as well dissolve it, have to look up how. +The second machine in a VM will go. I have no need for it anymore... until the next upgrade. |