Setting up Tailscale on CentOS Stream 9

Packages are available for x86 and ARM CPUs, in both 32-bit and 64-bit variants.

Add the Tailscale repository and install Tailscale:

sudo dnf config-manager --add-repo https://pkgs.tailscale.com/stable/centos/9/tailscale.repo
sudo dnf install tailscale

Use systemctl to enable and start the service:
```
sudo systemctl enable --now tailscaled
```
Connect your machine to your Tailscale network and authenticate in your browser:
```
sudo tailscale up
```
You’re connected! You can find your Tailscale IPv4 address by running:
```
tailscale ip -4
```

If the device you added is a server or remotely-accessed device, you may want to consider disabling key expiry to prevent the need to periodically re-authenticate.

Some routing features such as exit nodes may not work on CentOS because Tailscale’s routing is not yet compatible with firewalld.