zrok/docs/guides/v0.3_self_hosting_guide.md

# Self-Hosting Guide

## OpenZiti Quickstart

https://openziti.github.io/docs/quickstarts/network/

I specifically used the "no docker" variant:

```bash
$ source /dev/stdin <<< "$(wget -qO- https://get.openziti.io/quick/ziti-cli-functions.sh)"; expressInstall
$ startController
$ startRouter
```

Keep track of the generated admin password when running the `expressInstall` script. The script will prompt you like this:

```
Do you want to keep the generated admin password 'XO0xHp75uuyeireO2xmmVlK91T7B9fpD'? (Y/n)
```
You'll need that generated password (`XO0xHp75uuyeireO2xmmVlK91T7B9fpD`) when building your `zrok` controller configuration.

## Configure the Controller

Create a controller configuration file in `etc/ctrl.yml`. The controller does not provide server TLS, but you may front the server with a reverse proxy. This example will expose the non-TLS listener for the controller.

```yaml
#    _____ __ ___ | | __
#   |_  / '__/ _ \| |/ /
#    / /| | | (_) |   <
#   /___|_|  \___/|_|\_\
# controller configuration

v:                  1

admin:
  secrets:
    -               f60b55fa-4dec-4c4a-9244-e3b7d6b9bb13

endpoint:
  host:             0.0.0.0
  port:             18080

store:
  path:             zrok.db
  type:             sqlite3

ziti:
  api_endpoint:     "https://127.0.0.1:1280"
  username:         admin
  password:         "XO0xHp75uuyeireO2xmmVlK91T7B9fpD"

```
The `admin` section defines privileged administrative credentials and must be set in the `ZROK_ADMIN_TOKEN` environment variable in shells where you want to run `zrok admin`.

The `endpoint` section defines where your `zrok` controller will listen. 

The `store` section defines the local `sqlite3` database used by the controller.

The `ziti` section defines how the `zrok` controller should communicate with your OpenZiti installation. When using the OpenZiti quickstart, an administrative password will be generated; the `password` in the `ziti` stanza should reflect this password.

## Environment Variables

The `zrok` binaries are configured to work with the global `zrok.io` service, and default to using `api.zrok.io` as the endpoint for communicating with the service.

To work with a local `zrok` deployment, you'll need to set the `ZROK_API_ENDPOINT` environment variable to point to the address where your `zrok` controller will be listening, according to `endpoint` in the configuration file above.

In my case, I've set:

```bash
$ export ZROK_API_ENDPOINT=http://localhost:18080
```

## Bootstrap OpenZiti for zrok

With your OpenZiti network running and your configuration saved to a local file (I refer to mine as `etc/ctrl.yml` in these examples), you're ready to bootstrap the Ziti network.

Use the `zrok admin bootstrap` command to bootstrap like this:

```bash
$ zrok admin bootstrap etc/ctrl.yml 
[   0.002]    INFO main.(*adminBootstrap).run: {
	...
}
[   0.002]    INFO zrok/controller/store.Open: database connected
[   0.006]    INFO zrok/controller/store.(*Store).migrate: applied 0 migrations
[   0.006]    INFO zrok/controller.Bootstrap: connecting to the ziti edge management api
[   0.039]    INFO zrok/controller.Bootstrap: creating identity for controller ziti access
[   0.071]    INFO zrok/controller.Bootstrap: controller identity: jKd8AINSz
[   0.082]    INFO zrok/controller.assertIdentity: asserted identity 'jKd8AINSz'
[   0.085]    INFO zrok/controller.assertErpForIdentity: asserted erps for 'ctrl' (jKd8AINSz)
[   0.085]    INFO zrok/controller.Bootstrap: creating identity for frontend ziti access
[   0.118]    INFO zrok/controller.Bootstrap: frontend identity: sqJRAINSiB
[   0.119]    INFO zrok/controller.assertIdentity: asserted identity 'sqJRAINSiB'
[   0.120]    INFO zrok/controller.assertErpForIdentity: asserted erps for 'frontend' (sqJRAINSiB)
[   0.120] WARNING zrok/controller.Bootstrap: missing public frontend for ziti id 'sqJRAINSiB'; please use 'zrok admin create frontend sqJRAINSiB public https://{token}.your.dns.name' to create a frontend instance
[   0.123]    INFO zrok/controller.assertZrokProxyConfigType: found 'zrok.proxy.v1' config type with id '33CyjNbIepkXHN5VzGDA8L'
[   0.124]    INFO zrok/controller.assertMetricsService: creating 'metrics' service
[   0.126]    INFO zrok/controller.assertMetricsService: asserted 'metrics' service (5RpPZZ7T8bZf1ENjwGiPc3)
[   0.128]    INFO zrok/controller.assertMetricsSerp: creating 'metrics' serp
[   0.130]    INFO zrok/controller.assertMetricsSerp: asserted 'metrics' serp
[   0.134]    INFO zrok/controller.assertCtrlMetricsBind: creating 'ctrl-metrics-bind' service policy
[   0.135]    INFO zrok/controller.assertCtrlMetricsBind: asserted 'ctrl-metrics-bind' service policy
[   0.138]    INFO zrok/controller.assertFrontendMetricsDial: creating 'frontend-metrics-dial' service policy
[   0.140]    INFO zrok/controller.assertFrontendMetricsDial: asserted 'frontend-metrics-dial' service policy
[   0.140]    INFO main.(*adminBootstrap).run: bootstrap complete!
```

The `zrok admin bootstrap` command configures the `zrok` database, the necessary OpenZiti identities, and all of the OpenZiti policies required to run a `zrok` service.

Notice this warning:

```
[   0.120] WARNING zrok/controller.Bootstrap: missing public frontend for ziti id 'sqJRAINSiB'; please use 'zrok admin create frontend sqJRAINSiB public https://{token}.your.dns.name' to create a frontend instance
```

The `zrok` bootstrap process wants us to create a "public frontend" for our service. `zrok` uses public frontends to allow users to specify where they would like public traffic to ingress from.

The `zrok admin create frontend` command requires a running `zrok` controller, so let's start that up first:

```bash
$ zrok controller etc/ctrl.yml 
[   0.003]    INFO main.(*controllerCommand).run: {
	...
}
[   0.016]    INFO zrok/controller.inspectZiti: inspecting ziti controller configuration
[   0.048]    INFO zrok/controller.findZrokProxyConfigType: found 'zrok.proxy.v1' config type with id '33CyjNbIepkXHN5VzGDA8L'
[   0.048]    INFO zrok/controller/store.Open: database connected
[   0.048]    INFO zrok/controller/store.(*Store).migrate: applied 0 migrations
[   0.049]    INFO zrok/controller.(*metricsAgent).run: starting
[   0.064]    INFO zrok/rest_server_zrok.setupGlobalMiddleware: configuring
[   0.064]    INFO zrok/ui.StaticBuilder: building
[   0.065]    INFO zrok/rest_server_zrok.(*Server).Logf: Serving zrok at http://[::]:18080
[   0.085]    INFO zrok/controller.(*metricsAgent).listen: started
```

With our `ZROK_ADMIN_TOKEN` and `ZROK_API_ENDPOINT` environment variables set, we can create our public frontend like this:

```bash
$ zrok admin create frontend sqJRAINSiB public http://{token}.zrok.quigley.com:8080
[   0.037]    INFO main.(*adminCreateFrontendCommand).run: created global public frontend 'WEirJNHVlcW9'
```

Now our `zrok` controller is fully configured.

## Configure the Public Frontend

Create `etc/http-frontend.yml`. You must reiterate the pattern you expressed in the public frontend URL template as a `host_match` pattern, and you may change the default address where the frontend will listen for public access requests. The frontend does not provide server TLS, but you may front the server with a reverse proxy. It is essential the reverse proxy forwards the `Host` header supplied by the viewer. This example will expose the non-TLS listener for the frontend.

```yaml
host_match: zrok.quigley.com
address: 0.0.0.0:8080
```

## Start Public Frontend

In another terminal window, run:

```bash
$ zrok access public etc/http-frontend.yml
[   0.002]    INFO main.(*accessPublicCommand).run: {
	...
}
[   0.002]    INFO zrok/endpoints/public_frontend.newMetricsAgent: loaded 'frontend' identity
```

This process uses the `frontend` identity created during the bootstrap process to provide public access for the `zrok` deployment. It is expected that the configured listener for this `frontend` corresponds to the DNS template specified when creating the public frontend record above.

## Invite Yourself

```bash
$ zrok invite
New Email: user@domain.com
Confirm Email: user@domain.com
invitation sent to 'user@domain.com'!
```

If you look at the console output from your `zrok` controller, you'll see a message like this:

```
[ 238.168]    INFO zrok/controller.(*inviteHandler).Handle: account request for 'user@domain.com' has registration token 'U2Ewt1UCn3ql'
```

You can access your `zrok` controller's registration UI by pointing a web browser at:

```
http://localhost:18080/register/U2Ewt1UCn3ql
```

The UI will ask you to set a password for your new account. Go ahead and do that.

After doing that, I see the following output in my controller console:

```
[ 516.778]    INFO zrok/controller.(*registerHandler).Handle: created account 'user@domain.com' with token 'SuGzRPjVDIcF'
```

Keep track of the token listed above (`SuGzRPjVDIcF`). We'll use this to enable our shell for this `zrok` deployment.

## Enable Your Shell

```bash
$ zrok enable SuGzRPjVDIcF
zrok environment '2AS1WZ3Sz' enabled for 'SuGzRPjVDIcF'
```

Congratulations. You have a working `zrok` environment!