Fixes #3: Fix linting issues, add ansible-lint and yamllint configuration.

.github/workflows/lint.yml

@@ -0,0 +1,31 @@
+---
+name: Lint
+'on':
+  pull_request:
+  push:
+    branches:
+      - master
+
+jobs:
+
+  test:
+    name: Lint
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Check out the codebase.
+        uses: actions/checkout@v2
+
+      - name: Set up Python 3.7.
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.x'
+
+      - name: Install test dependencies.
+        run: pip3 install yamllint ansible-lint
+
+      - name: Run yamllint.
+        run: yamllint .
+
+      - name: Run ansible-lint.
+        run: ansible-lint

.yamllint

@@ -0,0 +1,9 @@
+---
+extends: default
+
+rules:
+  line-length:
+    max: 120
+    level: warning
+  truthy:
+    allowed-values: ['true', 'false', 'yes', 'no']

inventory/group_vars/all.yml

@@ -1,3 +1,4 @@
+---
 k3s_version: v0.8.1
 ansible_user: debian
 systemd_dir: /etc/systemd/system

reset.yml

@@ -4,4 +4,4 @@
   gather_facts: yes
   become: yes
   roles:
-    - { role: reset }
+    - role: reset

roles/download/tasks/main.yml

@@ -7,32 +7,31 @@
 
 - name: Download k3s binary x64
   get_url:
-      url: https://github.com/rancher/k3s/releases/download/{{ k3s_version }}/k3s
-      dest: /usr/local/bin/k3s
-      owner: root
-      group: root
-      mode: 755
-#  when: ( ansible_facts.userspace_architecture == "x86_64" )
-  when: ( ansible_facts.architecture == "x86_64" )
+    url: https://github.com/rancher/k3s/releases/download/{{ k3s_version }}/k3s
+    dest: /usr/local/bin/k3s
+    owner: root
+    group: root
+    mode: 755
+  when: ansible_facts.architecture == "x86_64"
 
 - name: Download k3s binary arm64
   get_url:
-      url: https://github.com/rancher/k3s/releases/download/{{ k3s_version }}/k3s-arm64
-      dest: /usr/local/bin/k3s
-      owner: root
-      group: root
-      mode: 755
-  when: ( ansible_facts.architecture is search("arm") )
-          and
-        ( ansible_facts.userspace_bits == "64" )
+    url: https://github.com/rancher/k3s/releases/download/{{ k3s_version }}/k3s-arm64
+    dest: /usr/local/bin/k3s
+    owner: root
+    group: root
+    mode: 755
+  when:
+    - ansible_facts.architecture is search("arm")
+    - ansible_facts.userspace_bits == "64"
 
 - name: Download k3s binary armhf
   get_url:
-      url: https://github.com/rancher/k3s/releases/download/{{ k3s_version }}/k3s-armhf
-      dest: /usr/local/bin/k3s
-      owner: root
-      group: root
-      mode: 755
-  when: ( ansible_facts.architecture is search("arm") )
-          and
-        ( ansible_facts.userspace_bits == "32" )
+    url: https://github.com/rancher/k3s/releases/download/{{ k3s_version }}/k3s-armhf
+    dest: /usr/local/bin/k3s
+    owner: root
+    group: root
+    mode: 755
+  when:
+    - ansible_facts.architecture is search("arm")
+    - ansible_facts.userspace_bits == "32"

roles/k3s/master/tasks/main.yml

@@ -36,10 +36,10 @@
   register: node_token
 
 - name: Store Master node-token
-  set_fact: 
-   token: "{{ node_token.content | b64decode | regex_replace('\n', '') }}"
+  set_fact:
+    token: "{{ node_token.content | b64decode | regex_replace('\n', '') }}"
 
-- name: Restore node-token file access 
+- name: Restore node-token file access
   file:
     path: /var/lib/rancher/k3s/server
     mode: "{{ p.stat.mode }}"
@@ -58,9 +58,11 @@
     owner: "{{ ansible_user }}"
 
 - name: Replace https://localhost:6443 by https://master-pi:6443
-  command: k3s kubectl config set-cluster default
-    --server=https://{{ master_ip }}:6443
-    --kubeconfig ~{{ ansible_user }}/.kube/config
+  command: >-
+    k3s kubectl config set-cluster default
+      --server=https://{{ master_ip }}:6443
+      --kubeconfig ~{{ ansible_user }}/.kube/config
+  changed_when: true
 
 - name: Create kubectl symlink
   file:

roles/prereq/tasks/main.yml

@@ -2,7 +2,7 @@
 - name: Set SELinux to disabled state
   selinux:
     state: disabled
-  when: ansible_distribution == 'CentOS' or ansible_distribution == 'Red Hat Enterprise Linux'
+  when: ansible_distribution in ['CentOS', 'Red Hat Enterprise Linux']
 
 - name: Enable IPv4 forwarding
   sysctl:
@@ -24,7 +24,7 @@
     value: "1"
     state: present
     reload: yes
-  when: ansible_distribution == 'CentOS' or ansible_distribution == 'Red Hat Enterprise Linux'
+  when: ansible_distribution in ['CentOS', 'Red Hat Enterprise Linux']
   loop:
     - net.bridge.bridge-nf-call-iptables
     - net.bridge.bridge-nf-call-ip6tables

roles/raspbian/tasks/main.yml

@@ -11,13 +11,13 @@
     regexp: '^(.*rootwait)$'
     line: '\1 cgroup_enable=cpuset cgroup_memory=1 cgroup_enable=memory'
     backrefs: true
-  when: ( cmdline.stat.path is defined )
-          and
-        ( ansible_facts.architecture is search("arm") )
+  when:
+    - cmdline.stat.path is defined
+    - ansible_facts.architecture is search("arm")
   register: boot_cmdline
 
-- name: Rebooting on Raspbian 
+- name: Rebooting on Raspbian
   reboot:
-  when: ( boot_cmdline is changed )
-          and
-        ( ansible_facts.architecture is search("arm") )
+  when:
+    - boot_cmdline | changed
+    - ansible_facts.architecture is search("arm")

site.yml

@@ -4,19 +4,17 @@
   gather_facts: yes
   become: yes
   roles:
-    - { role: prereq }
-    - { role: download }
-    - { role: raspbian }
+    - role: prereq
+    - role: download
+    - role: raspbian
 
 
 - hosts: master
-#  gather_facts: yes
   become: yes
   roles:
-    - { role: k3s/master }
+    - role: k3s/master
 
 - hosts: node
-#  gather_facts: yes
   become: yes
   roles:
-    - { role: k3s/node }
+    - role: k3s/node