zerotier-systemd-manager

README

Get ZeroTier playing nice with systemd-networkd and resolvectl

THIS REPOSITORY HAS MOVED TO this url.

This is a small tool to enable the systemd-networkd service as well as resolvectl to enable per-interface DNS settings. We take this directly from zerotier-one (on your machine) metadata. This service does not reach out to the internet on its own.

The result is per-interface DNS settings, which is especially nice when you are using zeronsd with multiple networks.

Usage

Compile it with golang:

# be outside of gopath when you do this
go get github.com/erikh/zerotier-systemd-manager

Install our slightly modified zerotier-one.service file in /usr/lib/systemd/system on Ubuntu, but this location may be different for other operating systems. This will make zerotier-one depend on systemd-networkd.

Ensure systemd-networkd is properly configured and resolvectl works as intended.

Finally, run the tool as root: zerotier-systemd-manager. If you have interfaces with DNS assignments in ZeroTier, it will populate files in /etc/systemd/network. No DNS assignment, no file.

Run systemctl restart systemd-networkd. Eventually some diffing logic will be added to determine when to kick the service, but you may just want to run it by hand when you join a network until then.

There is no detection of left networks, to avoid destroying files you care about. Remove these files manually. For better or worse, they are set up in a way that creates no interference, so as long as you don't get a similar interface name (unlikely), you're on solid ground.

Author

Erik Hollensbe github@hollensbe.org

License

BSD 3-Clause