Ansible playbook for configuring a fresh install of Raspbian
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README.md

Raspberry Pi Ansible

Glenn K. Lockwood, October 2018

Introduction

This is an Ansible configuration that configures a fresh Raspbian installation on Raspberry Pi. It is intended to be run in local (pull) mode, where ansible is running on the same Raspberry Pi to be configured.

Bootstrapping on Raspbian

You will need ansible installed on the Raspberry Pi being configured. This playbook relies on Ansible 2.8 or newer, which means you can no longer use sudo apt-get install ansible. Instead, you must

$ python3 -m venv --system-site-packages ansible_env

$ source ./ansible_env/bin/activate

# Make sure that pip will install into our virtualenv
(ansible_env) $ which pip
/home/pi/src/git/rpi-ansible/ansible/bin/pip

# Install ansible and any other requirements
(ansible_env) $ pip install -r requirements.txt

Configuration

The macaddrs structure in roles/common/vars/main.yml maps the MAC address of a Raspberry Pi to its intended configuration state. Add your Raspberry Pi's MAC address (specifically for eth0 if your RPi has multiple NICs) to that structure and set its configuration accordingly.

To add local users, create and edit roles/common/vars/users.yml. Follow the structure in roles/common/vars/users.yml.example. You can/should ansible-vault this file.

Running the playbook

Then run the playbook:

(ansible_env) $ sudo $(which ansible-playbook) --ask-vault-pass ./local.yml

The playbook will self-discover its settings, then idempotently configure the Raspberry Pi.

After running the playbook

This playbook purposely requires a few manual steps after running the playbook to ensure that it does not lock you out of your Raspberry Pi.

  1. While logged in as pi, sudo passwd glock (or whatever username you created) to set a password for that user. This is not required to log in as that user, but it is required to sudo as that user. You may also choose to set a password for the pi and/or root users.

  2. usermod --lock pi to ensure that the default user is completely disabled.

Optional configurations

SSH host keys

This playbook can install ssh host keys. To do so,

  1. drop the appropriate ssh_host_*_key files into roles/common/files/etc/ssh/
  2. rename each file from ssh_host_*_key to ssh_host_*_key.hostname where hostname matches the hostname in roles/common/vars/main.yml to which the hostkey should be deployed
  3. ansible-vault encrypt roles/common/files/etc/ssh/ssh_host_*_key.*

Acknowledgment

I stole a lot of knowledge from https://github.com/giuaig/ansible-raspi-config/.