Raspberry Pi 3

A Raspberry Pi 3 is used in my Homelab as a Tailscale subnet router and exit node.

Raspberry Pi 3 OS Setup

1. Flash Raspberry Pi OS Lite (64-bit) to a micro SD card using Raspberry Pi Imager.

2. Click the cog icon on the bottom right to open the Advanced options menu and configure the following options:

   • Set hostname to subnet01.
   • Enable SSH and allow public key authentication only. Enter your public key in the authorized_keys field.
   • Set a username and password.
   • Set locale settings as appropriate.
   • Disable telemetry.

3. Once flashed, insert the micro SD card into the Raspberry Pi and boot it.

4. SSH to the Raspberry Pi:

   Tip

   If you experience issues with hostname resolution on MacOS, try restarting the mDNSResponder service:

   sudo killall -HUP mDNSResponder
   

   ssh <user>@subnet01.net.dbren.uk
   

5. Run the following commands on the Raspberry Pi to set a static IP address, update the system and expand the filesystem:

   # Become root
   sudo -i
   raspi-config
   # Select "Advanced Options" > "Network Config" > 2 NetworkManager
   # Select "Advanced Options" > "Expand Filesystem"
   
   # Set static IP address
   nmcli connection modify eth0 ipv4.method manual ipv4.addresses 192.168.0.2/24 ipv4.gateway 192.168.0.1 ipv4.dns 45.90.28.138,45.90.30.138 connection.autoconnect yes
   
   # Enable connection to apply changes
   nmcli connection up eth0
   
   # Update system
   apt-get update && apt-get upgrade -y
   reboot