[Fixed] Moving klipper to the stub ccm broke our project

[mysticaltech]

Hello @brandond,

Just FYI, moving klipper to the ccm (as explained here) it broke one of our feature on kube-hetzner, because we are already using the hetzner ccm, and enabling klipper now breaks the cluster deployment, as port 10258 is already used by the stub ccm for klipper.

What a shame really! Now we have to changes lots of things in order to use metallb instead.

[brandond]

You know you can change the hetzner cloud-controller's listener port with the --secure-port option, or disable it entirely by setting it to 0, right? All it does is serve a few prometheus metrics so it's hardly important.

brandond@dev01:~$ docker run --rm -it hetznercloud/hcloud-cloud-controller-manager:v1.13.2 --help 2>&1 | grep secure-port
      --bind-address ip                        The IP address on which to listen for the --secure-port port. The associated interface(s) must be reachable by the rest of the cluster, and by CLI/web clients. If blank or an unspecified address (0.0.0.0 or ::), all interfaces will be used. (default 0.0.0.0)
      --secure-port int                        The port on which to serve HTTPS with authentication and authorization. If 0, don't serve HTTPS at all. (default 10258)

I'll open an issue to make the k3s cloud-controller manager args configurable so that you can disable or reconfigure our port instead, if you prefer. In the mean time simply changing the hetzner port seems like a reasonable workaround.

[mysticaltech]

@brandond I did not know; thank you for the info! 🙏 I will try modifying the --secure-port for now! 👍👍

[mysticaltech]

@brandond Confirmed working! I used --secure-port=10288 (I chose that number as not used anywhere else in Kube).

Thanks again for that quick tip! 🙏

[brandond]

I forgot that we actually do already allow configuring the CCM args. You can start k3s with --kube-cloud-controller-manager-arg=secure-port=0 to prevent K3s from occupying that port.

[mysticaltech]

Oh wow, simpler indeed! Thank you 🙏🙏