tailscale-relay's Introduction

tailscale-relay

This is a docker image based on alpine:3 for setting up a tailscale instance in relay mode and exit node.

Prerequisites

Defined docker network via docker network create -d bridge <network name>
Subnet network via docker inspect <NETWORK ID> | grep Subnet
If you want, you can add multiple subnets using comma to seperate, eg. 172.23.0.0/16,10.0.0.0/24
Auth key from https://login.tailscale.com/admin/authkeys (e.g. tskey-123abc...)

Requirements

--cap-add=NET_ADMIN
Volume for persistent storage /tailscale

Use

Run the following docker run command.

AUTHKEY=tskey-123abc...
ROUTES=172.31.0.0/16

docker run -d \
    -v /tailscale \
    --cap-add=NET_ADMIN \
    --network=<docker_net> \
    -e "ROUTES=<docker_network>" \
    -e "AUTHKEY=<your_auth_key>" \
    ido1990/tailscale-docker:latest

This version should pull the lastest version of Tailscale for every deployment (weekly). You can use Watchtower to keep Tailscale updated.

Find this image on Docker Hub

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tailscale-relay's Issues

Zombie process

Running this container results in a zombie process on the host:
root 3026 0.0 0.0 0 0 ? Z 16:42 0:00 [tailscale] <defunct>

Here's the docker run command that I used:

docker run -d \                                                                                                       
        -v /tailscale \
        --cap-add=NET_ADMIN \
        --network=<my_docker_network_name> \
        -e "ROUTES=list_of_local_subnets_in_192.168.x.x_format" \
        -e "AUTHKEY=xxxxxxxxxxxxxx" \
        ido1990/tailscale-docker:latest

Interestingly, tailscale seems to be functional.