initial commit

ansible/ansible-rpi-cluster/.gitignore

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+.DS_Store
+hosts

ansible/ansible-rpi-cluster/LICENSE

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+MIT License
+
+Copyright (c) 2018 Pavlos Ratis
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

ansible/ansible-rpi-cluster/README.md

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+# ansible-rpi-cluster
+
+This is a basic collection of Ansible playbooks to perform common tasks in a Raspberry Pi cluster.
+
+Feel free to contribute other common tasks that would be useful.
+
+## Requirements
+
+* [Ansible](http://www.ansible.com/)
+
+## Installation
+
+Clone the repository
+
+    git clone https://github.com/dastergon/ansible-rpi-cluster.git
+
+Copy `hosts.sample` to `hosts`
+
+    cp hosts.sample hosts
+
+Edit `hosts` file with your own topology. For example:
+
+```
+[all:vars]
+ansible_user=pi
+ansible_ssh_pass=addyourpassword
+
+[picluster]
+192.168.1.2
+192.168.1.3
+192.168.1.4
+192.168.1.5
+```
+
+Run any of the playbooks.
+
+## Shutdown
+
+To shutdown all your RPis execute the following playbook:
+
+    ansible-playbook playbooks/shutdown.yml -i hosts
+
+## Reboot
+
+To shutdown all your RPis execute the following playbook:
+
+    ansible-playbook playbooks/reboot.yml -i hosts

ansible/ansible-rpi-cluster/catalog-info.yaml

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+apiVersion: backstage.io/v1alpha1
+kind: Component
+metadata:
+  name: ansible-ansible-rpi-cluster
+  title: Ansible-rpi-cluster (ansible)
+spec:
+  type: service
+  lifecycle: production
+  owner: platform-team
+  partOf:
+    - ../catalog-info.yaml

ansible/ansible-rpi-cluster/hosts.sample

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+[picluster]
+rpi-worker 192.168.1.123

ansible/ansible-rpi-cluster/playbooks/reboot.yml

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+---
+- name: Playbook for rebooting the RPis
+  hosts: picluster
+  gather_facts: no
+  tasks:
+    - name: 'Reboot RPi'
+      shell: shutdown -r now
+      async: 0
+      poll: 0
+      ignore_errors: true
+      become: true
+
+    - name: "Wait for reboot to complete"
+      local_action: wait_for host={{ ansible_host }} port=22 state=started delay=10
+      become: false

ansible/ansible-rpi-cluster/playbooks/shutdown.yml

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+---
+- name: Playbook for shutting down the RPis
+  hosts: picluster
+  gather_facts: no
+  tasks:
+    - name: 'Shutdown RPi'
+      shell: shutdown -h now
+      async: 0
+      poll: 0
+      ignore_errors: true
+      become: true
+
+    - name: "Wait for shutdown to complete"
+      local_action: wait_for host={{ ansible_host }} port=22 state=stopped
+      become: false

ansible/ansible-rpi-cluster/playbooks/update.yml

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+---
+- name: Playbook for managing the updates in RPi
+  hosts: picluster
+  tasks:
+    - name: 'Update apt package cache'
+      become: yes
+      apt:
+        update_cache=yes

ansible/ansible-rpi-cluster/playbooks/upgrade.yml

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+---
+- name: Playbook for upgrading the RPis
+  hosts: picluster
+  gather_facts: no
+  tasks:
+    - name: Update and upgrade apt packages
+      become: true
+      apt:
+        upgrade: yes
+        update_cache: yes
+        cache_valid_time: 86400