Ansible - Part 2

Playbook Using VARIABLES

No special characters
Avoid CAPS.
'_' Allowed
Case Sensitive
DOT(.) not allowed

Make sure the Ansible Folders are outside the /etc

Using Variables - Installation of HTTPD & Firewalld

Create the yaml file with below details,

cat httpd.yml

---
- name: deploy and start httpd service
  hosts: centos
  become: true
  vars:
    web_pkg: httpd
    firewall_pkg: firewalld
    web_service: httpd
    firewall_service: firewalld
    rule: http

  tasks:
    - name: required packages installed and up to date
      yum:
        name:
          - "{{ web_pkg }}"
          - "{{ firewall_pkg }}"
        state: latest

    - name: The {{ firewall_service }} service is started
      service:
        name: "{{ firewall_service }}"
        enabled: true
        state: started
    - name: The {{ web_service }} service is started
      service:
        name: "{{ web_service }}"
        enabled: true
        state: started
    - name: web content is in place
      copy:
        content: <h1> Devops team </h1>
        dest: /var/www/html/index.html
    - name: firewall port for {{ rule }} opened
      firewalld:
        service: "{{ rule }}"
        permanent: true
        immediate: true
        state: enabled

become: true --> run as root
rule --> defined for PORT

Check whether the playbook is correct , its like to validate before the RUN. This is called DRYRUN.

ansible-playbook httpd.yml --check

Actual run is below with verbose output

ansible-playbook httpd.yml -vvv

Desired output

Now LETS create a users using file and variable declaration

cat vars.yml
user_details:
  - {name: 'user3', uid: 1007}
  - {name: 'user4', uid: 1008}

cat users.yml

---
- hosts: centos
  become: true
  vars_files:
    - /home/sathishpy1808/ansible-playbooks/vars.yml
  tasks:
    - name: add several users
      user:
        name: "{{ item.name }}"
        uid: "{{ item.uid }}"
        state: present
      with_items: "{{ user_details }}"

ansible-playbook users.yml -e @/home/sathishpy1808/ansible-playbooks/vars.yml --check
or
ansible-playbook users.yml --check


ansible-playbook users.yml -e @/home/sathishpy1808/ansible-playbooks/vars.yml -vvv
or
ansible-playbook users.yml -vvv