We hope this troubleshooting chapter has provided you with some insight into some of the common issues that are most likely to surface in a Proxmox cluster. As mentioned earlier in this chapter, this is by no means a complete list of all the possible issues. If at all possible, always hold off major Proxmox upgrades for a production cluster. Give it some time to work out the bugs. This way, your cluster will have very little chance of going down due to any unforeseen bugs.

Purchasing a Proxmox subscription is the best way to ensure that there are fewer bugs in the repositories, since Proxmox Enterprise repositories go through an additional layer of scrutiny and testing. For information on Proxmox subscriptions, refer to https://www.proxmox.com/proxmox-ve/pricing.

The Proxmox forum is also a great place to ask for help or share issues with the community. There are many...