Ansible Tutorial 21: Cross-Platform Application Deployment

In the previous article, we explored how to use Ansible for automated configuration of network devices. In this article, we focus on using Ansible for cross-platform application deployment. Although differences exist across platforms, Ansible’s ease of use and flexibility make cross-platform deployment both feasible and efficient.

I. Introduction to Ansible

Ansible is an open-source automation tool that executes tasks in an agentless manner—connecting to managed nodes via SSH or WinRM. Its robust capabilities significantly simplify deployment workflows in cross-platform environments.

1.1 Core Components of Ansible

• Inventory: A list defining the managed nodes.
• Playbook: A YAML file specifying the tasks to be executed.
• Module: Reusable scripts that perform specific actions; Ansible provides numerous built-in modules.

II. Common Cross-Platform Deployment Use Cases

In this section, we demonstrate how to use Ansible to deploy a simple web application across both Linux and Windows systems.

2.1 Environment Preparation

2.1.1 Installing Ansible

On Linux systems, install Ansible with the following commands:

sudo apt update
sudo apt install ansible

On Windows systems, we recommend using the Windows Subsystem for Linux (WSL), where Ansible can be installed and run natively.

2.1.2 Configuring the Inventory

Create an inventory file on the control node with the following content:

[linux_servers]
linux_host1 ansible_host=192.168.1.10 ansible_user=root

[windows_servers]
windows_host1 ansible_host=192.168.1.20 ansible_user=Administrator ansible_password=Passw0rd

2.2 Creating Playbooks

Next, we create Playbooks to install and configure Nginx on Linux hosts and IIS on Windows hosts.

2.2.1 Deploying Nginx on Linux

Create a file named deploy_nginx.yml with the following content:

---
- hosts: linux_servers
  become: true
  tasks:
    - name: Install Nginx
      apt:
        name: nginx
        state: present

    - name: Start Nginx Service
      service:
        name: nginx
        state: started
        enabled: true

    - name: Copy Nginx Configuration
      template:
        src: nginx.conf.j2
        dest: /etc/nginx/sites-available/default
      notify:
        - Restart Nginx

  handlers:
    - name: Restart Nginx
      service:
        name: nginx
        state: restarted

2.2.2 Deploying IIS on Windows

Create a file named deploy_iis.yml with the following content:

---
- hosts: windows_servers
  tasks:
    - name: Install IIS
      win_feature:
        name: Web-Server
        state: present

    - name: Start IIS Service
      win_service:
        name: W3SVC
        start_type: auto
        state: started

    - name: Copy Web Application Files
      win_copy:
        src: ./myapp/
        dest: C:\inetpub\wwwroot\myapp

2.3 Executing the Playbooks

To execute these Playbooks from the control node, run the following commands:

ansible-playbook -i inventory deploy_nginx.yml
ansible-playbook -i inventory deploy_iis.yml

III. Summary

Through the steps outlined above, we successfully deployed Nginx on Linux systems and IIS on Windows systems—demonstrating Ansible’s flexibility and power in enabling consistent, cross-platform application deployment.

In the next article, we will explore Ansible’s debugging strategies to help identify and resolve issues during automation workflows. We hope you’ll apply these techniques confidently in real-world scenarios to boost operational efficiency.

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If you have any questions or would like additional practical examples, feel free to reach out!