Updated for 0.10.0, adding molecule testing with Travis-CI

.gitignore

@@ -4,5 +4,6 @@ VAULT_PASSWORD
 VAULT_PASS
 .vault_pass
 .vault_pass.asc
-tests/fetch
+vagramt/fetch
-tests/ubuntu-*.log
+vagrant/ubuntu-*.log
+__pycache__

.travis.yml

@@ -0,0 +1,39 @@
+---
+
+# Thanks to geerlingguy!
+
+language: python
+services: docker
+
+env:
+  global:
+    - ROLE_NAME: k3s
+  matrix:
+    - MOLECULE_DISTRO: centos8
+    - MOLECULE_DISTRO: centos7
+    - MOLECULE_DISTRO: ubuntu1804
+    - MOLECULE_DISTRO: debian10
+    - MOLECULE_DISTRO: fedora29
+    - MOLECULE_DISTRO: fedora30
+    - MOLECULE_DISTRO: amazonlinux2
+
+    # Test other role features.
+    - MOLECULE_DISTRO: centos7
+      MOLECULE_PLAYBOOK: playbook-docker.yml
+
+install:
+  # Install test dependencies.
+  - pip install molecule docker jmespath
+
+before_script:
+  # Use actual Ansible Galaxy role name for the project directory.
+  - cd ../
+  - mv ansible-role-$ROLE_NAME xanmanning.$ROLE_NAME
+  - cd xanmanning.$ROLE_NAME
+
+script:
+  # Run tests.
+  - molecule test
+
+notifications:
+  webhooks: https://galaxy.ansible.com/api/v1/notifications/

.yamllint

@@ -0,0 +1,11 @@
+extends: default
+
+rules:
+  braces:
+    max-spaces-inside: 1
+    level: error
+  brackets:
+    max-spaces-inside: 1
+    level: error
+  line-length: disable
+  truthy: disable

README.md

@@ -3,6 +3,8 @@
 Ansible role for installing [Racher Labs k3s](https://k3s.io/) ("Lightweight
 Kubernetes") as either a standalone server or cluster.
 
+[![Build Status](https://www.travis-ci.org/PyratLabs/ansible-role-k3s.svg?branch=master)](https://www.travis-ci.org/PyratLabs/ansible-role-k3s)
+
 ## Requirements
 
 This role has been tested on Ansible 2.6.0+ against the following Linux Distributions:
@@ -12,6 +14,7 @@ This role has been tested on Ansible 2.6.0+ against the following Linux Distribu
   - Debian 10
   - openSUSE Leap 15
   - Ubuntu 18.04 LTS
+  - Amazon Linux 2
 
 ## Disclaimer
 

handlers/main.yml

@@ -1,18 +1,20 @@
 ---
 
-- name: reload systemctl
+- name: reload systemd
-  command: systemctl daemon-reload
+  systemd:
-  args:
+    daemon_reload: true
-    warn: false
+    # when: molecule_is_test is not defined
 
 - name: restart k3s
   service:
     name: k3s
     state: restarted
     enabled: true
+    # when: molecule_is_test is not defined
 
 - name: restart docker
   service:
     name: docker
     state: restarted
     enabled: true
+    # when: molecule_is_test is not defined

meta/main.yml

@@ -1,6 +1,7 @@
 ---
 
 galaxy_info:
+  role_name: k3s
   author: Xan Manning
   description: Ansible role for installing k3s as either a standalone server or cluster
   company: Pyrat Ltd.
@@ -38,6 +39,11 @@ galaxy_info:
     - name: EL
       versions:
         - 7
+    - name: Amazon
+    - name: Fedora
+      versions:
+        - 29
+        - 30
     - name: Debian
       versions:
         - buster

molecule/default/Dockerfile.j2

@@ -0,0 +1,26 @@
+# Molecule managed
+
+{% if item.registry is defined %}
+FROM {{ item.registry.url }}/{{ item.image }}
+{% else %}
+FROM {{ item.image }}
+{% endif %}
+
+RUN if [ $(command -v apt-get) ]; then apt-get update && apt-get install -y python systemd sudo bash ca-certificates && apt-get clean; \
+    elif [ $(command -v dnf) ]; then dnf makecache && dnf --assumeyes install python systemd sudo python-devel python*-dnf bash && dnf clean all; \
+    elif [ $(command -v yum) ]; then yum makecache fast && yum install -y python systemd sudo yum-plugin-ovl bash && sed -i 's/plugins=0/plugins=1/g' /etc/yum.conf && yum clean all; \
+    elif [ $(command -v zypper) ]; then zypper refresh && zypper install -y python systemd sudo bash python-xml && zypper clean -a; \
+    elif [ $(command -v apk) ]; then apk update && apk add --no-cache python sudo systemd bash ca-certificates; \
+    elif [ $(command -v xbps-install) ]; then xbps-install -Syu && xbps-install -y python systemd sudo bash ca-certificates && xbps-remove -O; fi
+
+RUN (cd /lib/systemd/system/sysinit.target.wants/; for i in *; do [ $i == systemd-tmpfiles-setup.service ] || rm -f $i; done); \
+	rm -f /lib/systemd/system/multi-user.target.wants/*; \
+	rm -f /etc/systemd/system/*.wants/*; \
+	rm -f /lib/systemd/system/local-fs.target.wants/*; \
+	rm -f /lib/systemd/system/sockets.target.wants/*udev*; \
+	rm -f /lib/systemd/system/sockets.target.wants/*initctl*; \
+	rm -f /lib/systemd/system/basic.target.wants/*; \
+	rm -f /lib/systemd/system/anaconda.target.wants/*;
+
+VOLUME [“/sys/fs/cgroup”]
+CMD [“/usr/sbin/init”]

molecule/default/INSTALL.rst

@@ -0,0 +1,22 @@
+*******
+Docker driver installation guide
+*******
+
+Requirements
+============
+
+* Docker Engine
+
+Install
+=======
+
+Please refer to the `Virtual environment`_ documentation for installation best
+practices. If not using a virtual environment, please consider passing the
+widely recommended `'--user' flag`_ when invoking ``pip``.
+
+.. _Virtual environment: https://virtualenv.pypa.io/en/latest/
+.. _'--user' flag: https://packaging.python.org/tutorials/installing-packages/#installing-to-the-user-site
+
+.. code-block:: bash
+
+    $ pip install 'molecule[docker]'

molecule/default/molecule.yml

@@ -0,0 +1,40 @@
+---
+
+dependency:
+  name: galaxy
+driver:
+  name: docker
+lint:
+  name: yamllint
+platforms:
+  - name: node1
+    image: "geerlingguy/docker-${MOLECULE_DISTRO:-centos8}-ansible:latest"
+    command: ${MOLECULE_DOCKER_COMMAND:-""}
+    volumes:
+      - /sys/fs/cgroup:/sys/fs/cgroup:ro
+    privileged: true
+    pre_build_image: true
+  - name: node2
+    image: "geerlingguy/docker-${MOLECULE_DISTRO:-centos8}-ansible:latest"
+    command: ${MOLECULE_DOCKER_COMMAND:-""}
+    volumes:
+      - /sys/fs/cgroup:/sys/fs/cgroup:ro
+    privileged: true
+    pre_build_image: true
+  - name: node3
+    image: "geerlingguy/docker-${MOLECULE_DISTRO:-centos8}-ansible:latest"
+    command: ${MOLECULE_DOCKER_COMMAND:-""}
+    volumes:
+      - /sys/fs/cgroup:/sys/fs/cgroup:ro
+    privileged: true
+    pre_build_image: true
+provisioner:
+  name: ansible
+  lint:
+    name: ansible-lint
+  playbooks:
+    converge: ${MOLECULE_PLAYBOOK:-playbook.yml}
+verifier:
+  name: testinfra
+  lint:
+    name: flake8

molecule/default/playbook-docker.yml

@@ -0,0 +1,9 @@
+---
+- name: Converge
+  hosts: all
+  become: true
+  vars:
+    molecule_is_test: true
+    k3s_ensure_docker_installed: true
+  roles:
+    - role: xanmanning.k3s

molecule/default/playbook.yml

@@ -0,0 +1,8 @@
+---
+- name: Converge
+  hosts: all
+  become: true
+  vars:
+    molecule_is_test: true
+  roles:
+    - role: xanmanning.k3s

molecule/default/tests/test_default.py

@@ -0,0 +1,14 @@
+import os
+
+import testinfra.utils.ansible_runner
+
+testinfra_hosts = testinfra.utils.ansible_runner.AnsibleRunner(
+    os.environ['MOLECULE_INVENTORY_FILE']).get_hosts('all')
+
+
+def test_hosts_file(host):
+    f = host.file('/etc/hosts')
+
+    assert f.exists
+    assert f.user == 'root'
+    assert f.group == 'root'

tasks/configure-k3s-cluster.yml

@@ -3,7 +3,12 @@
 - name: Ensure ansible_host is mapped to inventory_hostname
   lineinfile:
     path: /tmp/inventory.txt
-    line: "{{ item }}@@@{{ hostvars[item].ansible_host }}@@@{{ hostvars[item].k3s_control_node }}"
+    line: >-
+      {{ item }}
+      @@@
+      {{ hostvars[item].ansible_host | default(hostvars[item].ansible_fqdn) }}
+      @@@
+      {{ hostvars[item].k3s_control_node }}
     create: true
   loop: "{{ play_hosts }}"
 
@@ -14,11 +19,11 @@
 
 - name: Ensure control node is delegated to for obtaining a token
   set_fact:
-    k3s_control_delegate: "{{ k3s_control_delegate_raw.stdout.split('@@@')[0] }}"
+    k3s_control_delegate: "{{ k3s_control_delegate_raw.stdout.split(' @@@ ')[0] }}"
 
 - name: Ensure the control node address is registered in Ansible
   set_fact:
-    k3s_control_node_address: "{{ hostvars[k3s_control_delegate].ansible_host }}"
+    k3s_control_node_address: "{{ hostvars[k3s_control_delegate].ansible_host | default(hostvars[k3s_control_delegate].ansible_fqdn) }}"
 
 - name: Ensure NODE_TOKEN is captured from control node
   slurp:
@@ -31,16 +36,26 @@
     src: k3s.service.j2
     dest: /etc/systemd/system/k3s.service
   notify:
-    - reload systemctl
+    - reload systemd
     - restart k3s
 
 - meta: flush_handlers
 
+- name: Wait for control plane to be ready to accept connections
+  wait_for:
+    port: 6443
+    delay: 5
+    sleep: 5
+    timeout: 300
+  when: k3s_control_node
+
 - name: Wait for all nodes to be ready
   command: "{{ k3s_install_dir }}/kubectl get nodes"
   changed_when: false
+  failed_when: false
   register: kubectl_get_nodes_result
-  until: kubectl_get_nodes_result.stdout.find("NotReady") == -1
+  until: kubectl_get_nodes_result.rc == 0
+         and kubectl_get_nodes_result.stdout.find("NotReady") == -1
   retries: 30
   delay: 20
   when: k3s_control_node

tasks/install-k3s.yml

@@ -6,7 +6,7 @@
     dest: /etc/systemd/system/k3s.service
   when: k3s_control_node
   notify:
-    - reload systemctl
+    - reload systemd
 
 - meta: flush_handlers
 
@@ -27,4 +27,4 @@
     name: k3s
     state: started
     enabled: true
-  when: k3s_control_node
+  when: k3s_control_node  # and molecule_is_test is not defined

templates/k3s.service.j2

@@ -4,7 +4,7 @@ Documentation=https://k3s.io
 After=network.target
 
 [Service]
-Type=notify
+Type={{ 'notify' if k3s_control_node else 'exec' }}
 ExecStartPre=-/sbin/modprobe br_netfilter
 ExecStartPre=-/sbin/modprobe overlay
 {% if k3s_control_node %}
@@ -18,6 +18,9 @@ LimitNOFILE=infinity
 LimitNPROC=infinity
 LimitCORE=infinity
 TasksMax=infinity
+TimeoutStartSec=0
+Restart=always
+RestartSec=5s
 
 [Install]
 WantedBy=multi-user.target

vagrant/inventory.yml

@@ -1,3 +1,5 @@
+---
+
 all:
   vars:
     ansible_become: true