# ZeroTier GitHub Action

ZeroTier is an SDN platform that allows users to create virtual
networks that can span multiple devices, locations, and cloud
providers. ZeroTier creates an encrypted peer-to-peer mesh overlay
network that handles NAT traversal and authentication to network
resources.

The ZeroTier Github Action allows users to easily integrate
ZeroTier into their CI/CD workflows by temporarily joining and
authorizing runners onto private ZeroTier networks.

```yaml
- name: ZeroTier
  uses: zerotier/github-action@v1.0.1
  with:
    network_id: ${{ secrets.ZEROTIER_NETWORK_ID }}
    auth_token: ${{ secrets.ZEROTIER_CENTRAL_TOKEN }}
```

`ZEROTIER_CENTRAL_TOKEN` can be provisioned from `Account` section in the [ZeroTier Central](https://my.zerotier.com) admin panel.

This Action works on Ubuntu, MacOS, and Windows runners.

----

This action installs ZeroTier on the runner node and generates a unique ZeroTier identity.  
It then uses the supplied `auth_token` to authorize the runner onto the network.

```yaml
- name: ZeroTier
  uses: zerotier/github-action@v1.0.1
  with:
    network_id: ${{ secrets.ZEROTIER_NETWORK_ID }}
    auth_token: ${{ secrets.ZEROTIER_CENTRAL_TOKEN }}
    
- name: ping host
  shell: bash
  run: |
    count=10
    while ! ping -c 1 ${{ secrets.ZEROTIER_HOST_IP }} ; do
      echo "waiting..." ;
      sleep 1 ;
      let count=count-1
    done
    echo "ping success"
```

After the workflow has completed, a `post` step automatically cleans
up by removing the runner from the network.