WSL2 DNS synchronizer.

Install:

• Run: npm i -g wsl2-dns
• From your Windows installation go to C:\Windows\System32\drivers\etc and take ownership of this file and/or make it writable from non-elevated Notepad instance. You can do that manually, but I recommend to use WinAero Tweaker to add Take ownership entry into file context menu.

How it works:

This app will update IPs of your existing domains defined in Windows' hosts file to match wsl2 distro IP address (which changes when wsl2 shuts down).

It will not add new entries.

Note that Windows does not support wildcard subdomains, so you still have to list your domains manually there even if you run wsl2-dns with wildcard subdomains specified.

Usage:

• wsl2-dns domain1 [domain2 domain3 ...domainN]
  ^ where domain is either a full domain name to update or "wildcard" name starting with . dot to update all subdomains of that domain (excluding root domain itself!)

Example:

• wsl2-dns bigproject.local .localhost
  ^ to update bigproject.local, small.localhost, other.localhost, but not localhost

Warning: It is not recommended to replace localhost root level domain. Some Windows apps may rely on that pointing to 127.0.0.1.

Recommended usage

• put wsl2-dns command in your ~/.profile file, this way each time you start a new terminal window you will have your dns domains updated
• choose single or multiple top-level domain (.localhost or any custom, I use .dzek) to avoid updating the .profile file each time you add new subdomain (remember you need to update Windows' hosts file)

FAQ / Errors:

Error: hosts file is not writable.

See Install part of this file. Running as root will not help - it's the Windows host that prevents editing the file, not Linux permissions.

Error: Specify domains to update

See Usage.

Error: ip addr command failed to start

Your distro is missing ip application.

• Debian/Ubuntu: install it with sudo apt-get install iproute2
• Centos: install it with yum install iproute
• Other distros: You have to Google that yourself.

Could not find IP address

ip addr returns unexpected results. This apps looks for eth0 network IP address. Please try running ip addr manually and report an issue.

License

MIT