Ansible gist to detect the cloud platform on which a VM is running

detect_cloud_platform.yml

---
#
# Detects the cloud provider on which the VM is running and sets accordingly the
# following variables:
#   cloud_platform_is_aws=true when on AWS, false otherwise
#   cloud_platform_is_gcp=true when on GCP, false otherwise
#   cloud_platform_is_azure=true when on Azure, false otherwise
#   cloud_platform_name:
#    - 'azure' when on Azure
#    - 'aws' when on AWS
#    - 'gcp' when on GCP
#    - 'unknown' otherwise
#

- set_fact:
    cloud_platform_is_aws:   false
    cloud_platform_is_gcp:   false
    cloud_platform_is_azure: false

# SEE: https://stackoverflow.com/questions/11570965/how-to-detect-azure-amazon-vm
- name: "Detect AWS"
  block:

   - name: "Probe for AWS"
     shell: dmidecode -s bios-version | grep -iq "amazon"
     changed_when: false
     failed_when: false
     register: probe_aws

   - set_fact:
       cloud_platform_is_aws: "{{ probe_aws | success and probe_aws.rc == 0 }}"

# SEE: https://stackoverflow.com/questions/30911775/how-to-know-if-a-machine-is-an-google-compute-engine-instance
- name: "Detect GCP"
  block:

   - name: "Probe for GCP"
     shell: dmidecode -s bios-version | grep -iq "google"
     changed_when: false
     failed_when: false
     register: probe_gcp

   - set_fact:
       cloud_platform_is_gcp: "{{ probe_gcp | success and probe_gcp.rc == 0 }}"

# SEE: https://stackoverflow.com/questions/11570965/how-to-detect-azure-amazon-vm
- name: "Detect Azure"
  block:

   - name: "Probe for Azure 1/2"
     shell: dmidecode -s system-manufacturer | grep -iq "microsoft corporation"
     changed_when: false
     failed_when: false
     register: probe_azure_1

   - name: "Probe for Azure 2/2"
     shell: dmidecode -s system-product-name | grep -iq "virtual machine"
     changed_when: false
     failed_when: false
     register: probe_azure_2

   - set_fact:
       cloud_platform_is_azure: "{{
         (probe_azure_1 | success and probe_azure_1.rc == 0) or
         (probe_azure_2 | success and probe_azure_2.rc == 0)
       }}"

- name: "Set Cloud Platform"
  set_fact:
    cloud_platform_name: "{% if cloud_platform_is_azure %}azure{% elif cloud_platform_is_aws %}aws{% elif cloud_platform_is_gcp %}gcp{% else %}unknown{% endif %}"