Medium : Ansible and AWS CLI : idempotent Aurora clusters example https://medium.com/@tomwwright/ansible-and-the-aws-cli-no-module-no-problem-27580d36ef2d

aurora-cluster-idempotent.yml

- hosts: localhost
  vars:
    aurora_cluster_name: mycoolauroracluster
    aurora_cluster_engine: aurora-mysql
    aurora_cluster_version: 5.7.12
    aws_region: ap-southeast-2
  tasks:

    - name: look for an existing Aurora cluster using the AWS CLI
      command: >
        aws rds describe-db-clusters
          --filters Name=db-cluster-id,Values={{ aurora_cluster_name }}
          --region {{ aws_region }}
      changed_when: false
      register: aurora_cluster_query
    
    - name: parse the response and check if our Aurora cluster is there
      set_fact:
        aurora_cluster: "{{ aurora_cluster_query.stdout | from_json | json_query('DBClusters[0]')}}"
      
    - name: create Aurora Cluster with the AWS CLI if it doesn't exist
      command: >
        aws rds create-db-cluster
          --region {{ aws_region }}
          --cli-input-json '{{ lookup('template', 'create-db-cluster.json.j2') | to_json }}'
      when: aurora_cluster == '' # json_query returns an empty string if it doesn't resolve right, nice

create-db-cluster.json.j2

{
  "DBClusterIdentifier": "{{ aurora_cluster_name }}",
  "Engine": "{{ aurora_cluster_engine }}",
  "EngineVersion": "{{ aurora_cluster_version }}",
  "MasterUsername": "ansible",
  "MasterUserPassword": "supersecure"
}