Moved HA testing to a new scenario

.travis.yml

@@ -8,6 +8,7 @@ services: docker
 env:
   global:
     - ROLE_NAME: k3s
+    - MOLECULE_SCENARIO: default
   matrix:
     - MOLECULE_DISTRO: geerlingguy/docker-centos8-ansible:latest
     - MOLECULE_DISTRO: geerlingguy/docker-centos7-ansible:latest
@@ -36,7 +37,7 @@ env:
 
     # Test multiple masters in control plane with PostgreSQL
     - MOLECULE_DISTRO: geerlingguy/docker-centos8-ansible:latest
-      MOLECULE_PLAYBOOK: playbook-ha-postgres.yml
+      MOLECULE_SCENATIO: highavailability
 
 install:
   # Install test dependencies.
@@ -45,12 +46,12 @@ install:
 before_script:
   # Use actual Ansible Galaxy role name for the project directory.
   - cd ../
-  - mv ansible-role-$ROLE_NAME xanmanning.$ROLE_NAME
-  - cd xanmanning.$ROLE_NAME
+  - mv ansible-role-${ROLE_NAME} xanmanning.${ROLE_NAME}
+  - cd xanmanning.${ROLE_NAME}
 
 script:
   # Run tests.
-  - molecule test
+  - molecule test --scenario-name "${MOLECULE_SCENARIO}"
 
 notifications:
   webhooks: https://galaxy.ansible.com/api/v1/notifications/

molecule/default/molecule.yml

@@ -34,14 +34,6 @@ platforms:
     pre_build_image: ${MOLECULE_PREBUILT:-true}
     networks:
       - name: k3snet
-  - name: database
-    image: postgres:11-alpine
-    pre_build_image: true
-    command: "postgres"
-    env:
-      POSTGRES_PASSWORD: "verybadpass"
-    networks:
-      - name: k3snet
 provisioner:
   name: ansible
   options:

molecule/default/playbook-docker-altport-wireguard.yml

@@ -1,6 +1,6 @@
 ---
 - name: Converge
-  hosts: node*
+  hosts: all
   become: true
   vars:
     molecule_is_test: true

molecule/default/playbook-docker.yml

@@ -1,6 +1,6 @@
 ---
 - name: Converge
-  hosts: node*
+  hosts: all
   become: true
   vars:
     molecule_is_test: true

molecule/default/playbook-download.yml

@@ -1,6 +1,6 @@
 ---
 - name: Converge
-  hosts: node*
+  hosts: all
   become: true
   vars:
     molecule_is_test: true

molecule/default/playbook-no-deploy.yml

@@ -1,6 +1,6 @@
 ---
 - name: Converge
-  hosts: node*
+  hosts: all
   become: true
   vars:
     molecule_is_test: true

molecule/default/playbook-restart-cluster.yml

@@ -1,6 +1,6 @@
 ---
 - name: Converge
-  hosts: node*
+  hosts: all
   become: true
   vars:
     molecule_is_test: true

molecule/default/playbook-start-cluster.yml

@@ -1,6 +1,6 @@
 ---
 - name: Converge
-  hosts: node*
+  hosts: all
   become: true
   vars:
     molecule_is_test: true

molecule/default/playbook-stop-cluster.yml

@@ -1,6 +1,6 @@
 ---
 - name: Converge
-  hosts: node*
+  hosts: all
   become: true
   vars:
     molecule_is_test: true

molecule/default/playbook-version.yml

@@ -1,6 +1,6 @@
 ---
 - name: Converge
-  hosts: node*
+  hosts: all
   become: true
   vars:
     molecule_is_test: true

molecule/default/playbook.yml

@@ -1,6 +1,6 @@
 ---
 - name: Converge
-  hosts: node*
+  hosts: all
   become: true
   vars:
     molecule_is_test: true

molecule/default/prepare.yml

@@ -1,6 +1,6 @@
 ---
 - name: Prepare
-  hosts: node*
+  hosts: all
   tasks:
     - name: Debug Message
       debug:

molecule/highavailability/Dockerfile.j2

@@ -0,0 +1,14 @@
+# 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 sudo bash ca-certificates && apt-get clean; \
+    elif [ $(command -v dnf) ]; then dnf makecache && dnf --assumeyes install python sudo python-devel python*-dnf bash && dnf clean all; \
+    elif [ $(command -v yum) ]; then yum makecache fast && yum install -y python 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 sudo bash python-xml && zypper clean -a; \
+    elif [ $(command -v apk) ]; then apk update && apk add --no-cache python sudo bash ca-certificates; \
+    elif [ $(command -v xbps-install) ]; then xbps-install -Syu && xbps-install -y python sudo bash ca-certificates && xbps-remove -O; fi

molecule/highavailability/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/highavailability/molecule.yml

@@ -0,0 +1,67 @@
+---
+
+dependency:
+  name: galaxy
+driver:
+  name: docker
+lint:
+  name: yamllint
+platforms:
+  - name: node1
+    image: "${MOLECULE_DISTRO:-geerlingguy/docker-centos8-ansible:latest}"
+    command: ${MOLECULE_DOCKER_COMMAND:-""}
+    volumes:
+      - /sys/fs/cgroup:/sys/fs/cgroup:ro
+    privileged: true
+    pre_build_image: ${MOLECULE_PREBUILT:-true}
+    networks:
+      - name: k3snet
+  - name: node2
+    image: "${MOLECULE_DISTRO:-geerlingguy/docker-centos8-ansible:latest}"
+    command: ${MOLECULE_DOCKER_COMMAND:-""}
+    volumes:
+      - /sys/fs/cgroup:/sys/fs/cgroup:ro
+    privileged: true
+    pre_build_image: ${MOLECULE_PREBUILT:-true}
+    networks:
+      - name: k3snet
+  - name: node3
+    image: "${MOLECULE_DISTRO:-geerlingguy/docker-centos8-ansible:latest}"
+    command: ${MOLECULE_DOCKER_COMMAND:-""}
+    volumes:
+      - /sys/fs/cgroup:/sys/fs/cgroup:ro
+    privileged: true
+    pre_build_image: ${MOLECULE_PREBUILT:-true}
+    networks:
+      - name: k3snet
+  - name: database
+    image: postgres:11-alpine
+    pre_build_image: true
+    command: "postgres"
+    env:
+      POSTGRES_PASSWORD: "verybadpass"
+    networks:
+      - name: k3snet
+  - name: loadbalancer
+    image: nginx:1.16-alpine
+    pre_build_image: true
+    ports:
+      - "6443:6443"
+    volumes:
+      - ${MOLECULE_SCENARIO_DIRECTORY}/nginx-loadbalancer.conf:/etc/nginx/nginx.conf:ro
+    command: "nginx -g 'daemon off;'"
+    networks:
+      - name: k3snet
+provisioner:
+  name: ansible
+  options:
+    verbose: true
+  lint:
+    name: ansible-lint
+  playbooks:
+    prepare: ${MOLECULE_PREPARE_PLAYBOOK:-prepare.yml}
+    converge: ${MOLECULE_PLAYBOOK:-playbook.yml}
+verifier:
+  name: testinfra
+  lint:
+    name: flake8

molecule/highavailability/nginx-loadbalancer.conf

@@ -0,0 +1,20 @@
+events { }
+
+http {
+    # Set up our upstream of control (master) nodes. The default load balancing
+    # algorithm for nginx is to round-robin. Perfect!
+    upstream control_plane {
+        server node2:6443;
+        server node3:6443;
+    }
+
+    # Listen on port 6443, this is our default control plane port, then pass
+    # all traffic to one of the control (master) nodes.
+    server {
+        listen 6443;
+
+        location / {
+            proxy_pass http://control_plane;
+        }
+    }
+}

molecule/highavailability/playbook.yml

@@ -4,6 +4,7 @@
   become: true
   vars:
     molecule_is_test: true
+    k3s_control_node_address: loadbalancer
     k3s_datastore_endpoint: "postgres://postgres:verybadpass@database:5432/postgres?sslmode=disable"
   pre_tasks:
     - name: Set each node to be a control node

molecule/highavailability/prepare.yml

@@ -0,0 +1,7 @@
+---
+- name: Prepare
+  hosts: node*
+  tasks:
+    - name: Debug Message
+      debug:
+        msg: No prepare steps required

molecule/highavailability/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'