Yggdrasil

End-to-end encrypted IPv6 networking to connect worlds

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macOS

Yggdrasil is well supported on macOS out of the box, thanks to the inclusion of the utun driver in macOS.

Notes

Installation

System Integrity Protection in macOS prevents you from copying files into /usr/bin, therefore you should install into /usr/local/bin instead. This may not exist by default so create it if it doesn’t exist:

sudo mkdir -p /usr/local/bin

Then download the latest Yggdrasil binary and install it:

sudo cp ~/Downloads/yggdrasil-x.x.xx-darwin-amd64 /usr/local/bin/yggdrasil
sudo chmod +x /usr/local/bin/yggdrasil

Alternatively, compile Yggdrasil from source (below) and install:

sudo cp /path/to/yggdrasil-go/yggdrasil /usr/local/bin/yggdrasil
sudo chmod +x /usr/local/bin/yggdrasil

Generate configuration

Before starting Yggdrasil, you should generate configuration:

sudo yggdrasil -genconf > /etc/yggdrasil.conf

Run Yggdrasil

Run once

Open Terminal.app and start Yggdrasil using your generated configuration:

sudo nohup yggdrasil -useconffile /etc/yggdrasil.conf &

Alternatively, start Yggdrasil in auto-configuration mode:

sudo nohup yggdrasil -autoconf &

Run as a background service

Running as a background system service means that Yggdrasil will automatically start up in the background when your Mac boots. It also ensures that Yggdrasil will be restarted automatically if the process is terminated for some reason.

You can install Yggdrasil as a launchd service using the launchd scripts in the Git repository. Locate the yggdrasil.plist file in the contrib folder of the repository and make sure that the paths match your installation (i.e. /usr/local/bin/yggdrasil and /etc/yggdrasil.conf) and then copy it into /Library/LaunchDaemons/.

If you already have the source repository to hand, you can instead retrieve yggdrasil.plist from there instead of downloading as above:

cd /path/to/yggdrasil-go
sudo cp contrib/macos/yggdrasil.plist /Library/LaunchDaemons/

Once the yggdrasil.plist file is in /Library/LaunchDaemons/, you can start the service:

sudo launchctl load /Library/LaunchDaemons/yggdrasil.plist

When using the launchd scripts from the repository, standard output is logged to /tmp/yggdrasil.stdout.log and error output is logged to /tmp/yggdrasil.stderr.log.

If you want to stop the Yggdrasil service and prevent it from being restarted by launchd:

sudo launchctl unload /Library/LaunchDaemons/yggdrasil.plist

Build instructions

macOS has most of the tools needed to build Yggdrasil from source - you just need to install Go 1.9 or later.

  1. Download the latest Go .pkg installer for macOS
  2. Run the installer to install Go on your system
  3. Open Terminal.app, clone the repository and build:
    cd /path/to
    git clone https://github.com/yggdrasil-network/yggdrasil-go
    cd yggdrasil-go
    ./build
    
  4. The resulting yggdrasil file is your build - optionally install it into your system, as above.