ansible-vagrant-demo

Instalation

1. Vagrant 2.4.1
2. VirtualBox 7.0.20
3. Ansible 2.17.4

Commands

Vagrant Commands

1. Initalize the Vagrantfile. This will generate a file called Vagrantfile.

   vagrant init --minimal

2. Copy the prepared Vargantfile_Prepared into the generated Vagrantfile:

   cp Vargantfile_Prepared Vagrantfile

3. Spin up the VMs defined in the Vagrantfile:

   vagrant up

4. Destroy VMs:

   vagrant destroy -f

Ansible Commands

1. Run the Ansible playbook command using the specified configuration.

   ANSIBLE_CONFIG=./ansible/ansible.cfg ansible-playbook ./ansible/main.yml

Demo

This demo shows multiple Ansible features:

• Playbooks
• Roles
• Profiling
• Conditionals

Script

1. Spin up VMs

   vagrant up

2. Configure VMs using Ansible

   ANSIBLE_CONFIG=./ansible/ansible.cfg ansible-playbook ansible/main.yml

3. Check out web servers using a script:

   ./scripts/open_ips_in_chrome.sh
   

4. Change ./ansible/main.yml to use the Nginx role.

   - name: Nginx Role for Dev and Prod
     include_role:
       name: nginx
   

5. Rerun Ansible playbook

   ANSIBLE_CONFIG=./ansible/ansible.cfg ansible-playbook ansible/main.yml

6. While playbook is running add profiling to ansible.cfg:

   callbacks_enabled = timer, profile_tasks, profile_roles
   

7. Show that web servers are still configured the same.

8. Add conditionals in ./ansible/main.yml:

   - name: Nginx Role for Dev and Prod
     include_role:
       name: nginx
     when: inventory_hostname != "infra"
   
   - name: Apache Role for Infra
     include_role:
       name: apache
     when: inventory_hostname == "infra"
   

9. Show that only infra is now using Apache as web server.