Multi zone masters on HA setup?

[GiovanniBarile]

Hello, is there a way to create a multi zone control plane? For example
1x master in Helsinki, 1x in Falkenstein and 1x in Nuremberg ?
So it can really be HA, this way if something happens in a specific datacenter, all the masters go down at the same time

Thank you

[vitobotta]

Hi, it’s on the plan, but it’s not available right now. By default, hetzner-k3s uses etcd for the control plane data storage, and etcd is really sensitive to latency issues. So, having masters in different regions wouldn’t work well without a lot of adjustments and tests. Based on my experience, etcd can be quite challenging in setups like this.

hetzner-k3s v2 lets you use a relational database, such as Postgres or MySQL, instead of etcd, which solves the latency problem. This part is already in place, but I still need to add support for configuration options that let you choose where to place the masters. I can’t give you an exact timeframe for this because I have a lot of other tasks and limited time.