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wg-mesh-bash

This is a bash script to create a simple mesh network using WireGuard. Configuration is all performed over SSH and private keys never leave the machines.

Tested on Debian 11 and Raspberry Pi OS 11.

Requirements:

  • SSH access to all hosts, either as root or as a user with password-less sudo rights
  • A direct network connection between all hosts (this could be over the public Internet or local LAN)

Usage

  1. Rename or copy the inventory-example file to inventory then edit it to your needs. See the comments for usage information.
  2. Edit the variables at the top of deploy.sh if required
  3. Run ./deploy.sh to deploy and activate the network

What the script does

  • Install the wireguard package and its dependencies if it is not already present
  • Allocates a static IP address on the mesh network for each host, this is stored in the cfg directory
  • Generate private and public keys on each host, these are generated once per host+interface.
  • Generate and install the config file for the mesh network interface on each host
  • (optionally) Start or reconfigure the mesh network interface on each host