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pikvm/docs/tailscale.md

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Tailscale VPN

The Tailscale VPN can be used to access PiKVM from the Internet when using port forwarding is not possible or does not seem secure enough. Tailscale is a convenient and free (for private use) tool for organizing a small VPN network.

Basic Tailscale usage like whats shown below is provided as an example, any other setting or functionality needs to be redirected to the Tailscale support.

Configuring the PiKVM

  1. Install the client, run tailscaled service and register it in the network:

    [root@pikvm ~]# rw
[root@pikvm ~]# pacman -Syu
[root@pikvm ~]# pacman -S tailscale-pikvm
[root@pikvm ~]# systemctl enable --now tailscaled
[root@pikvm ~]# tailscale up

  2. Follow the link to authorize this installation.

  3. After success, perform reboot to make sure that everything is working correctly:

    [root@pikvm ~]# reboot

  4. Now you can try to view the IP address of Tailscale network interface:

    [root@pikvm ~]# ip addr show tailscale0

If everything is successful, PiKVM will become a member of your VPN network.

!!! warning Do not update Tailscale if you don't have access to PiKVM without VPN, because on breaking change in Tailscale, you may lose access.

Unfortunately sometimes updating the Tailscale client on PiKVM can cause problems.
This is happening since Tailscale has weak support of read-only systems.

Configuring a client device

  • Download and install the Tailscale client for your OS to the system you are using (not to the system you want to control).
  • Check the admin page to view your VPN network.
  • Follow the URL in the web browser: https://<tailscale_kvm_ip> and you will see PiKVM web interface.

Troubleshooting

If something not work, the usual advice is to completely remove the Tailscale from PiKVM and perform a clean installation:

[root@pikvm ~]# rw
[root@pikvm ~]# pacman -Rscnd tailscale
[root@pikvm ~]# rm -rf /var/lib/tailscale /var/cache/tailscale
[root@pikvm ~]# reboot

Next, follow this page from the beginning to install the Tailscale again.