Setting up Tailscale on Amazon Linux 2

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

Some versions of Amazon Linux 2 are unable to verify signatures from Tailscale, due to a bug in the gnupg2 package. If you encounter a signature verification error, check that your gnupg2 package is version 2.0.22-5.amzn2.0.4 or later. You can update if necessary with sudo yum update gnupg2

Install the Yum repository manager:
```
sudo yum install yum-utils
```

Add the Tailscale repository and install Tailscale:

sudo yum-config-manager --add-repo https://pkgs.tailscale.com/stable/amazon-linux/2/tailscale.repo
sudo yum 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.