1. login a Linux VM. Assume the CentOS 7.5 is installed in this VM.
2. install pre-requisite packages.

sudo yum install -y gcc libffi-devel python-devel openssl-devel epel-release
sudo yum install -y python-pip python-wheel

3. install ansible

sudo pip install ansible[azure]

4. create azure credentials file

mkdir ~/.azure
vim ~/.azure/credentials

5. edit credentials file

[default]
subscription_id=<your-subscription_id>
client_id=<security-principal-appid>
secret=<security-principal-password>
tenant=<security-principal-tenant>
cloud_environment=AzureChinaCloud
#ad_user=<your-username>
#password=<your-password>

6. create an ansible playbook file

vim ~/test.yml

7. an example of ansible playbook for creating vm in azure

- name: Create Azure VM
  hosts: localhost
  connection: local
  tasks:
  - name: Create resource group
    azure_rm_resourcegroup:
      name: myResourceGroup
      location: chinaeast
  - name: Create virtual network
    azure_rm_virtualnetwork:
      resource_group: myResourceGroup
      name: myVnet
      address_prefixes: "10.0.0.0/16"
  - name: Add subnet
    azure_rm_subnet:
      resource_group: myResourceGroup
      name: mySubnet
      address_prefix: "10.0.1.0/24"
      virtual_network: myVnet
  - name: Create public IP address
    azure_rm_publicipaddress:
      resource_group: myResourceGroup
      allocation_method: Static
      name: myPublicIP
    register: output_ip_address
  - name: Dump public IP for VM which will be created
    debug:
      msg: "The public IP is {{ output_ip_address.state.ip_address }}."
  - name: Create Network Security Group that allows SSH
    azure_rm_securitygroup:
      resource_group: myResourceGroup
      name: myNetworkSecurityGroup
      rules:
        - name: SSH
          protocol: Tcp
          destination_port_range: 22
          access: Allow
          priority: 1001
          direction: Inbound
  - name: Create virtual network inteface card
    azure_rm_networkinterface:
      resource_group: myResourceGroup
      name: myNIC
      virtual_network: myVnet
      subnet: mySubnet
      public_ip_name: myPublicIP
      security_group: myNetworkSecurityGroup
  - name: Create VM
    azure_rm_virtualmachine:
      resource_group: myResourceGroup
      name: myVM
      vm_size: Standard_DS1_v2
      admin_username: azureuser
      ssh_password_enabled: false
      ssh_public_keys:
        - path: /home/azureuser/.ssh/authorized_keys
          key_data: <your-ssh-public-key-data>
      network_interfaces: myNIC
      image:
        offer: CentOS
        publisher: OpenLogic
        sku: '7.5'
        version: latest

8. execute this file

ansible-playbook test.yml

9. the VM should be created after completing the script.
10. create/update the hosts file

sudo vim /etc/ansible/hosts

11. edit the hosts file

[testserver]
#testserver's ip address or domain name
10.0.2.4
test.com.cn

12. create install.yml file

sudo vim ~/install.yml

13 edit install.yml file

---
- hosts: testserver
  remote_user: testuser
  roles:
    - tester

14. execute the file

ansible-playbook install.yml -b