Deployment validation using Ansible

The AWS collection supports modules to collect information, for example, ec2_vpc_net_info and ec2vpc_subnet_info. This is very useful to retrieve the actual operational information and compare it with the intended data, from host and group vars.

In this recipe, we will use a new playbook, pb_aws_net_validate.yml, adding VPC and subnet validation:

1. Create the pb_aws_net_validate.yml playbook, with the playbook definition and the VPC validation tasks. It checks the CIDR block assigned and the name, according to the data in host_vars:

   root@cookbook-lab:~/cookbook-lab/chapters/ch08# ansible-playbook pb_aws_net_validate.yml
   - name: Validate VPC resources
     hosts: all
     gather_facts: no
     environment:
       AWS_ACCESS_KEY: “{{ aws_access_key }}”
       AWS_SECRET_KEY: “{{ aws_secret_key_id&...