db_setup_playbook.yml

# Installing required version of mongodb in db-server
# hosts entries are already done - ssh/password authentication in place
---
# hosts name
- hosts: db
# get facts/logs
  gather_facts: yes
# admin access
  become: true
# add instructions:
# install mongodb
  tasks:
  - name: Setting Up MongoDB
    apt: pkg=mongodb state=present
# ensure db is running (status actively running)
# replaces bind_ip to allow access for web to connect to database
  - name: Change BindIP to allow web VM access
    replace:
      path: /etc/mongodb.conf
      regexp: 'bind_ip = 127.0.0.1'
      replace: 'bind_ip = 0.0.0.0'
# uncomments port = 27017
  - name: Ensure port 27017 is uncommented
    replace:
      path: /etc/mongodb.conf
      regexp: '#port = 27017'
      replace: 'port = 27017'
# restarts mongodb with changes made to mongodb.conf
  - name: Restart MongoDB service
    systemd:
      name: mongodb
      state: restarted
# enables mongodb
  - name: Enable MongoDB service
    systemd:
      name: mongodb
      enabled: yes