debian-unattended/README.md

# Debian unattended install

> **ATTENTION:** this repo is focused on my thesis work so expect some mess and low generalization.

## Usage

Get help:

```sh
./regeniso-sid.sh -h
```

### Examples:

> **Note:** `preseed/kube.cfg` at the moment works only with the _netinst_ image. The reason is that with the _netinst-minimal_ I should manually install some kernel modules (`cdrom` for example) and at the moment I don't know how to do this.

Generate a _netinst_ with a _kube_ preseed:

```sh
./regeniso-sid.sh preseed/kube.cfg netinst stable amd64 auto "bluetooth.blacklist=yes bnep.blacklist=yes"
```

## Initialize the VM

Create a VM and launch the unattended install.

Minimal requirements:

+ 2 Cores
+ 3GB RAM (8GB for a decent experience)

Once the unattended installation finished successfully we should prepare the environment inside the VM.

> **user:** `virtualuser`
>
> **password:** `test`

Launch this script:

```sh
/srv/custom/main.sh
```

Once it concluded successfully shut down the VM.

Use the image of the first VM as a base and create 3 different linked volumes:

```sh
qemu-img create -f qcow2 -b baseImage.qcow2 deltaImage.qcow2
```

Create 3 clones of the base VM and associate at each one a delta image. Beware that each VM **_must_** have a different MAC address.

Launch the 3 VM clones and in one of them (usually the first) login and then install Rancher:

Login without polluting the _known hosts_ file:

```sh
ssh virtualuser@ipAddress -o "StrictHostKeyChecking=no" -o "UserKnownHostsFile=/dev/null"
```

And then launch this to install Rancher:
```sh
docker run -d --restart=unless-stopped -p 80:80 -p 443:443 --privileged rancher/rancher
```