# Freeleaps Cluster Authenticator

> Helps to `kubectl` authenticated to `Freeleaps Kubernetes Cluster`.

## Prerequisites

- `mathmast.com` Azure Directory account
- `Linux` with `Shell / Bash` support
- `Internet` access

## How to use ?

First, you need grant this script to executable with commands:

```bash
chmod ug+x freeleaps-cluster-authenticator
```

Now, you can get help text with commands:

```bash
freeleaps-cluster-authenticator -h
```

`Freeleaps Cluster Authentication` requires some tools to ensure authentication workflow, please check belows and make sure they are installed on your device:

- `curl`
- `unzip`
- `uname`
- `jq`

Once the required tools are installed, you can using command:

```bash
freeleaps-cluster-authenticator auth
```

to start authentication workflow.

Once authentication workflow started, `Freeleaps Cluster Authenticator` will check the requirements and automatically install `kubectl` and `kubelogin` if not found.

The console output should be like:

```text
[GATHER] Checking OS and architecture...
[INFO] OS: linux
[INFO] Architecture: amd64
[PREREQUISITES] Checking for required tools...
[PREREQUISITES] curl: ✓
[PREREQUISITES] unzip: ✓
[PREREQUISITES] uname: ✓
[PREREQUISITES] kubectl: ✓
[PREREQUISITES] kubelogin: ✓
[PREREQUISITES] jq: ✓
```

And will shows `[SETUP] Setting up kubelogin...` if prerequisites checking passed.

Now you can open `http://127.0.0.1:8000` with your browser, it will redirect to Microsoft login page, you can login `Freeleaps Kubernetes Cluster` with your `mathmast.com` Azure Directory account.

Console will shows `[SETUP] kubelogin setup completed successfully.` when authenticated successfully.

Now the `Freeleaps Cluster Authenticator` will prompt you to input your `mathmast` Azure Directory account name (ends with `@mathmast.com`):

```text
[GATHER] Checking OS and architecture...
[INFO] OS: linux
[INFO] Architecture: amd64
[PREREQUISITES] Checking for required tools...
[PREREQUISITES] curl: ✓
[PREREQUISITES] unzip: ✓
[PREREQUISITES] uname: ✓
[PREREQUISITES] kubectl: ✓
[PREREQUISITES] kubelogin: ✓
[PREREQUISITES] jq: ✓
[SETUP] Setting up kubelogin...
[SETUP] kubelogin setup completed successfully.
[PROMPT] Please enter your Mathmast account name (ending with @mathmast.com, eg. jack@mathmast.com):
```

You can enter your `mathmast.com` Azure Directory account name and press enter to submit.

The `Freeleaps Cluster Authenticator` will automatically finish setting works when you submit your `mathmast.com` Azure Directory account name and the console should be like:

```text
[PROMPT] Username: zhenyus@mathmast.com
[KUBECTL & KUBE_LOGIN] Setting kubectl credentials for zhenyus@mathmast.com...
[KUBECTL & KUBE_LOGIN] Credentials set successfully.
[KUBECTL] Adding cluster (named to: freeleaps-cluster) to kubectl...
[KUBECTL] Cluster added to kubectl successfully.
[KUBECTL] Creating kubectl context...
[KUBECTL] Context created successfully.
[KUBECTL] Using kubectl context...
[KUBECTL] Context set successfully.
[KUBECTL] Checking whoami...
ATTRIBUTE   VALUE
Username    zhenyus@mathmast.com
Groups      [mathmast:admin system:authenticated]
[INFO] Your kubectl has been authenticated with your Mathmast account.
[INFO] Now you can try to using kubectl to interact with the cluster.
```

Now you are already finished authentication for `Freeleaps Kubernetes Cluster`.

You can using `kubectl` to work with `Freeleaps Kubernetes CLuster` right now.

## Commands

`Freeleaps Cluster Authenticator` provides lots of useful command to help you complete authentication flow.

| Command      | Alias                | Usage                                                                                                  |
| ------------ | -------------------- | ------------------------------------------------------------------------------------------------------ |
| `auth`       | `-a`,`--auth`        | Setup `kubectl` for Freeleaps Kubernetes Cluster with provides `mathmast.com` Azure Directory account  |
| `reset-auth` | `-r`,`--reset-auth`  | Reset `kubectl` authentication state                                                                   |
| `clear`      | `-c`,`--clear`       | Clear authentication                                                                                   |
| `doctor`     | `-d`, `--doctor`     | Check if all the required tools are installed                                                          |
| `dashboard`  | `-db`, `--dashboard` | Open dashboard for Freeleaps Kubernetes Cluster and forward the port to localhost and listen on `8443` |
| `get-token`  | `-gt`, `--get-token` | Get the token for the current user, usually to using for Kubernetes Dashboard authentication           |
