Ansible stuff for setting up Raspeberry Pis
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README.md

raspi-ansible

This is a simple Ansible setup to configure a Raspberry Pi Zero W as web server.

This repository contains two roles, one to configure the SSH access for easier access and another role to set up a PHP 7 web server running Nginx + PHP7-FPM.

Step 1: Set Up Connectivity

The first thing we need to do is to test connectivity and prepare for the first Ansible run. Since this is a new Raspbian install, it has the default user and password ( u:pi / p:raspberry ) that comes with all fresh installs. We will use these for the SSH setup in the next step.

But first of all, you'll need to edit the inventory file (a file named hosts in the project's root directory) and change the IP address there to reflect your Raspberry Pi Zero W IP address. The inventory file contains, as the name suggests, the inventory of servers to be controlled by Ansible. This is how our inventory file looks like:

[raspi01]
192.168.0.27

[webservers:children]
raspi01

Change 192.168.0.27 to the IP address of your Raspberry Pi Zero W. After changing that, let's just run a command to test connectivity and show information about your Raspberry Pi Zero:

ansible webservers -k -m setup

This command will ask for the SSH password - use raspberry. After a few seconds it should print a big json containing all the facts collected by Ansible. Example output (excerpt):

SSH password: 
192.168.0.27 | SUCCESS => {
    "ansible_facts": {
        "ansible_all_ipv4_addresses": [
            "192.168.0.27"
        ], 
        "ansible_all_ipv6_addresses": [
            "fd00:f0f2:4990:a2:3d6e:857e:cafe:681", 
            "fe80::f745:81d2:91a6:55a2"
        ], 
        "ansible_architecture": "armv6l", 
        "ansible_bios_date": "NA", 
        "ansible_bios_version": "NA", 
        "ansible_cmdline": {
            "8250.nr_uarts": "0", 
            "bcm2708_fb.fbheight": "984", 
            "bcm2708_fb.fbswap": "1", 
            "bcm2708_fb.fbwidth": "1824", 
            "console": "tty1", 
            "dwc_otg.lpm_enable": "0", 
            "elevator": "deadline", 
            "fsck.repair": "yes", 
            "plymouth.ignore-serial-consoles": true, 
            "quiet": true, 
            "root": "PARTUUID=5ffcb831-02", 
            "rootfstype": "ext4", 
            "rootwait": true, 
            "smsc95xx.macaddr": "B8:27:EB:7F:A1:46", 
            "splash": true, 
            "vc_mem.mem_base": "0x1ec00000", 
            "vc_mem.mem_size": "0x20000000"

If you got an error, maybe you need to install sshpass in order to be able to provide a password for Ansible. Check the error message to see if that's the case. If you already have sshpass installed and the error is something else, try adding -vvvv to make the command extra verbose.

If you got the output, it means connectivity is fine, and Ansible is capable of running commands on your Raspberry system. You can go ahead to the next step.

Step 2: Set Up SSH Access

We are going to run a playbook this time. It has a few tasks to configure the server and it will copy your current user key to the user pi inside the Raspberry, so you can log in simply by running ssh pi@your-pi-address , no need for passwords. This will also facilitate running Ansible in the future, to avoid having to provide the password all the time!

ansible-playbook -k setup.yml

After this playbook is executed, you should be able to connect via SSH to the Raspberry Pi without the need to provide a password.

Step 3: Run the webserver Playbook

Now, finally for the web server playbook.

ansible-playbook webserver.yml

After this playbook run is finished, you should have a working PHP 7 web server running on your Raspberry Pi Zero W. Go to your browser and point it to the Rasp Pi address, you should see something like this:

Troubleshooting

If you get any Ansible errors, add -vvvv to the command to increase verbosity. This will help a lot!