Update ch4 excersise

ch4-role/lqvan/ansible.cfg

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+[defaults]
+host_key_checking = False
+inventory = inventory

ch4-role/lqvan/inventory/group_vars/ubuntu.yaml

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+ansible_python_interpreter: /usr/bin/python3

ch4-role/lqvan/inventory/hosts

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+[ubuntu]
+ubuntu11 ansible_host=192.168.100.11
+ubuntu12 ansible_host=192.168.100.12
+
+[centos]
+centos21 ansible_host=192.168.100.21
+centos22 ansible_host=192.168.100.22
+
+
+[linux:children]
+ubuntu
+centos
+

ch4-role/lqvan/roles/apache2/.travis.yml

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+---
+language: python
+python: "2.7"
+
+# Use the new container infrastructure
+sudo: false
+
+# Install ansible
+addons:
+  apt:
+    packages:
+    - python-pip
+
+install:
+  # Install ansible
+  - pip install ansible
+
+  # Check ansible version
+  - ansible --version
+
+  # Create ansible.cfg with correct roles_path
+  - printf '[defaults]\nroles_path=../' >ansible.cfg
+
+script:
+  # Basic role syntax check
+  - ansible-playbook tests/test.yml -i tests/inventory --syntax-check
+
+notifications:
+  webhooks: https://galaxy.ansible.com/api/v1/notifications/

ch4-role/lqvan/roles/apache2/README.md

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+Role Name
+=========
+
+apache2
+
+Requirements
+------------
+
+N/A.
+
+Role Variables
+--------------
+
+foo:  var for testing
+
+Dependencies
+------------
+
+N/A
+
+Example Playbook
+----------------
+
+Including an example of how to use your role (for instance, with variables passed in as parameters) is always nice for users too:
+
+    - hosts: servers
+      roles:
+         - apache2
+
+License
+-------
+
+BSD
+
+Author Information
+------------------
+
+An optional section for the role authors to include contact information, or a website (HTML is not allowed).

ch4-role/lqvan/roles/apache2/defaults/main.yml

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+---
+# defaults file for apache2
+welcome_user: lqvan
+packages:
+  Debian:
+   - apache2
+  RedHat:
+   - httpd
+services:
+  Debian: apache2
+  RedHat: httpd

ch4-role/lqvan/roles/apache2/handlers/main.yml

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+---
+# handlers file for apache2
+- name: Restart Apache
+  service:
+    name: "{{ services[ansible_os_family] }}"
+    state: restarted

ch4-role/lqvan/roles/apache2/meta/main.yml

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+galaxy_info:
+  author: Van LQ
+  description: Install Apache 2
+  company: your company (optional)
+
+  # If the issue tracker for your role is not on github, uncomment the
+  # next line and provide a value
+  # issue_tracker_url: http://example.com/issue/tracker
+
+  # Choose a valid license ID from https://spdx.org - some suggested licenses:
+  # - BSD-3-Clause (default)
+  # - MIT
+  # - GPL-2.0-or-later
+  # - GPL-3.0-only
+  # - Apache-2.0
+  # - CC-BY-4.0
+  license: license (GPL-2.0-or-later, MIT, etc)
+
+  min_ansible_version: "2.9"
+
+  # If this a Container Enabled role, provide the minimum Ansible Container version.
+  # min_ansible_container_version:
+
+  #
+  # Provide a list of supported platforms, and for each platform a list of versions.
+  # If you don't wish to enumerate all versions for a particular platform, use 'all'.
+  # To view available platforms and versions (or releases), visit:
+  # https://galaxy.ansible.com/api/v1/platforms/
+  #
+  # platforms:
+  # - name: Fedora
+  #   versions:
+  #   - all
+  #   - 25
+  # - name: SomePlatform
+  #   versions:
+  #   - all
+  #   - 1.0
+  #   - 7
+  #   - 99.99
+
+  platforms:
+    - name: "EL"
+      versions:
+      - "7"
+    - name: "Ubuntu"
+      versions:
+      - "bionic"
+
+
+  galaxy_tags: []
+    # List tags for your role here, one per line. A tag is a keyword that describes
+    # and categorizes the role. Users find roles by searching for tags. Be sure to
+    # remove the '[]' above, if you add tags to this list.
+    #
+    # NOTE: A tag is limited to a single word comprised of alphanumeric characters.
+    #       Maximum 20 tags per role.
+
+dependencies: []
+  # List your role dependencies here, one per line. Be sure to remove the '[]' above,
+  # if you add dependencies to this list.
+

ch4-role/lqvan/roles/apache2/tasks/main.yml

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+---
+# tasks file for apache2
+- name: Install Apache
+  package:
+    name: "{{ packages[ansible_os_family] }}"
+    state: latest
+
+- name: Configuring service
+  service:
+    name: "{{ services[ansible_os_family] }}"
+    state: restarted
+    enabled: yes
+
+- name: Copy welcome page
+  template:
+    src: "templates/index.html.j2"
+    dest: "/var/www/html/index.html"
+  notify: Restart Apache
+
+- name: Force all notified handlers to run at this point, not waiting for normal sync points
+  meta: flush_handlers

ch4-role/lqvan/roles/apache2/templates/index.html.j2

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+<html>
+   <head>
+       <title>Hello {{ welcome_user }} !</title>
+   </head>
+   <body>
+       <h1>Hello {{ welcome_user }} apache is working!</h1>
+   </body>
+</html>

ch4-role/lqvan/roles/apache2/tests/inventory

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+localhost
+

ch4-role/lqvan/roles/apache2/tests/test.yml

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+---
+- hosts: localhost
+  remote_user: root
+  roles:
+    - apache2

ch4-role/lqvan/roles/apache2/vars/main.yml

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+---
+# vars file for apache2

ch4-role/lqvan/site.yml

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+# site.yml
+---
+- name: Setup Apache web server
+  hosts: all
+  gather_facts: yes
+  become: yes
+
+  tasks:
+   - name: Setup Apache using role
+     import_role:
+       name: apache2
+
+   - name: Check the welcome page
+     uri:
+       method: GET
+       return_content: yes
+       status_code: 200
+       url: "http://{{ inventory_hostname }}"
+     register: result
+
+   - name: Display welcome page
+     debug:
+       msg: "{{ result.content }}"