In this video I show how to perform OPNSense 'HA' using a single VM and 1 IP. This technique makes use of homogenous network setups across identical nodes where failover in Proxmox comes into effect.
Recommended Hardware: https://github.com/JamesTurland/JimsGarage/blob/main/Homelab-Buyer's-Guide/Q3-2023.md
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GitHub: https://github.com/JamesTurland/JimsGarage
00:00 - Introduction to High Availability
01:18 - Network Overview
04:05 - Proxmox Overview
11:51 - Physical Overview
13:02 - Testing and Failover
15:12 - Ping During Failover
17:26 - Speed Tests
21:47 - Testing Migration in Real Time
23:43 - Outro