Ansible Cloudformation Stack Update

playbook_cf_stack_update.yml

# playbook_cf_stack_update.yml

# update an existing cloudformation stack by changing only the parameters specified into updated_params dict variable

- hosts: localhost
  connection: local
  gather_facts: False

  vars:
    stack_name: stack-to-update
    stack_region: us-east-1
    stack_template: ./files/stack-to-update.json
    updated_params:
    - param-to-update: new-value
    - other-param-to-update: new-value
    
  tasks:

  - name: retrieve stack facts
    cloudformation_facts:
      stack_name: "{{ stack_name }}"
      stack_resources: true
    check_mode: no
    
  - name: update cloudformation stack
    cloudformation:
      stack_name: "{{ stack_name }}"
      state: "present"
      region: "{{ stack_region }}"
      template: "{{ stack_template }}"
      template_parameters: "{{ ansible_facts.cloudformation[stack_name].stack_parameters | combine(updated_params)}}"

  - name: show stack status
    debug:
      msg: "{{ ansible_facts.cloudformation[stack_name].stack_description.stack_status }}"
      
  - name: show stack params
    debug:
      msg: "{{ ansible_facts.cloudformation[stack_name].stack_parameters }}"

  - name: show stack outputs
    debug:
      msg: "{{ ansible_facts.cloudformation[stack_name].stack_outputs }}"

  - name: show stack resources
    debug:
      msg: "{{ ansible_facts.cloudformation[stack_name].stack_resources }}"