Setting Up a 2-Node Proxmox Cluster
Today I completed the initial setup of my 2-node Proxmox cluster. Here’s what I learned about quorum and why a QDevice is essential for 2-node setups.
The cluster uses Corosync for communication and requires careful network planning. I dedicated VLAN 10 for cluster traffic to ensure reliable heartbeat communication.
Key takeaways:
- Always use dedicated network for cluster communication
- QDevice prevents split-brain scenarios
- Test failover before going to production