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juanfont.headscale/docs/running-headscale-openbsd.md
2022-06-11 17:23:01 +08:00

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# Running headscale on OpenBSD
## Goal
This documentation has the goal of showing a user how-to install and run `headscale` on OpenBSD 7.1.
In additional to the "get up and running section", there is an optional [rc.d section](#running-headscale-in-the-background-with-rcd)
describing how to make `headscale` run properly in a server environment.
## Install `headscale`
1. Install from ports (Not Recommend)
As of OpenBSD 7.1, there's a headscale in ports collection, however, it's severely outdated(v0.12.4).
You can install it via `pkg_add headscale`.
2. Install from source on OpenBSD 7.1
```shell
# Install prerequistes
# 1. go v1.18+: headscale newer than 0.15 needs go 1.18+ to compile
# 2. gmake: Makefile in the headscale repo is written in GNU make syntax
pkg_add -D snap go
pkg_add gmake
git clone https://github.com/juanfont/headscale.git
cd headscale
# optionally checkout a release
# option a. you can find offical relase at https://github.com/juanfont/headscale/releases/latest
# option b. get latest tag, this may be a beta release
latestTag=$(git describe --tags `git rev-list --tags --max-count=1`)
git checkout $latestTag
gmake build
# make it executable
chmod a+x headscale
# copy it to /usr/local/sbin
cp headscale /usr/local/sbin
```
3. Install from source via cross compile
```shell
# Install prerequistes
# 1. go v1.18+: headscale newer than 0.15 needs go 1.18+ to compile
# 2. gmake: Makefile in the headscale repo is written in GNU make syntax
git clone https://github.com/juanfont/headscale.git
cd headscale
# optionally checkout a release
# option a. you can find offical relase at https://github.com/juanfont/headscale/releases/latest
# option b. get latest tag, this may be a beta release
latestTag=$(git describe --tags `git rev-list --tags --max-count=1`)
git checkout $latestTag
make build GOOS=openbsd
# copy headscale to openbsd machine and put it in /usr/local/sbin
```
## Configure and run `headscale`
1. Prepare a directory to hold `headscale` configuration and the [SQLite](https://www.sqlite.org/) database:
```shell
# Directory for configuration
mkdir -p /etc/headscale
# Directory for Database, and other variable data (like certificates)
mkdir -p /var/lib/headscale
```
2. Create an empty SQLite database:
```shell
touch /var/lib/headscale/db.sqlite
```
3. Create a `headscale` configuration:
```shell
touch /etc/headscale/config.yaml
```
It is **strongly recommended** to copy and modify the [example configuration](../config-example.yaml)
from the [headscale repository](../)
4. Start the headscale server:
```shell
headscale serve
```
This command will start `headscale` in the current terminal session.
---
To continue the tutorial, open a new terminal and let it run in the background.
Alternatively use terminal emulators like [tmux](https://github.com/tmux/tmux).
To run `headscale` in the background, please follow the steps in the [rc.d section](#running-headscale-in-the-background-with-rcd) before continuing.
5. Verify `headscale` is running:
Verify `headscale` is available:
```shell
curl http://127.0.0.1:9090/metrics
```
6. Create a namespace ([tailnet](https://tailscale.com/kb/1136/tailnet/)):
```shell
headscale namespaces create myfirstnamespace
```
### Register a machine (normal login)
On a client machine, execute the `tailscale` login command:
```shell
tailscale up --login-server YOUR_HEADSCALE_URL
```
Register the machine:
```shell
headscale --namespace myfirstnamespace nodes register --key <YOU_+MACHINE_KEY>
```
### Register machine using a pre authenticated key
Generate a key using the command line:
```shell
headscale --namespace myfirstnamespace preauthkeys create --reusable --expiration 24h
```
This will return a pre-authenticated key that can be used to connect a node to `headscale` during the `tailscale` command:
```shell
tailscale up --login-server <YOUR_HEADSCALE_URL> --authkey <YOUR_AUTH_KEY>
```
## Running `headscale` in the background with rc.d
This section demonstrates how to run `headscale` as a service in the background with [rc.d](https://man.openbsd.org/rc.d).
1. Create a rc.d service at `/etc/rc.d/headscale` containing:
```shell
#!/bin/ksh
daemon="/usr/local/sbin/headscale"
daemon_logger="daemon.info"
daemon_user="root"
daemon_flags="serve"
daemon_timeout=60
. /etc/rc.d/rc.subr
rc_bg=YES
rc_reload=NO
rc_cmd $1
```
2. `/etc/rc.d/headscale` needs execute permission:
```shell
chmod a+x /etc/rc.d/headscale
```
3. Start `headscale` service:
```shell
rcctl start headscale
```
4. Make `headscale` service start at boot:
```shell
rcctl enable headscale
```
5. Verify the headscale service:
```shell
rcctl check headscale
```
Verify `headscale` is available:
```shell
curl http://127.0.0.1:9090/metrics
```
`headscale` will now run in the background and start at boot.