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Installing Ansible Tower

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Ansible Tower is a powerful web-based interface for Ansible that provides a centralized platform for managing and automating your IT infrastructure. This section will guide you through the process of installing Ansible Tower on your system.

Prerequisites

Before installing Ansible Tower, ensure that your system meets the following prerequisites:

  1. Operating System: Ansible Tower supports various Linux distributions, including:

    • Red Hat Enterprise Linux (RHEL) 7 or 8
    • CentOS 7 or 8
    • Ubuntu 18.04 LTS or 20.04 LTS

  2. Hardware Requirements:

    • Minimum:
      • 4 GB RAM
      • 2 CPU Cores
      • 20 GB Disk Space
    • Recommended:
      • 8 GB RAM
      • 4 CPU Cores
      • 50 GB Disk Space

  3. Dependencies:

    • Python 3.6 or higher
    • Ansible 2.9 or higher

  4. Network Configuration:

    • Ensure that your system has a stable internet connection.
    • Open the necessary ports (default: 80 for HTTP, 443 for HTTPS).

Step-by-Step Installation

Step 1: Update Your System

First, update your system packages to ensure you have the latest versions:

sudo apt update && sudo apt upgrade -y  # For Ubuntu
sudo yum update -y                      # For RHEL/CentOS

Step 2: Install Dependencies

Install the required dependencies, including Python and Ansible:

# For Ubuntu
sudo apt install -y python3 python3-pip ansible

# For RHEL/CentOS
sudo yum install -y python3 python3-pip ansible

Step 3: Download Ansible Tower

Download the latest version of Ansible Tower from the official website:

# Navigate to the directory where you want to download the installer
cd /tmp

# Download the installer (replace the URL with the latest version)
curl -O https://releases.ansible.com/ansible-tower/setup/ansible-tower-setup-latest.tar.gz

# Extract the downloaded tarball
tar xvzf ansible-tower-setup-latest.tar.gz

# Navigate to the extracted directory
cd ansible-tower-setup-<version>

Step 4: Configure Ansible Tower

Before running the installation script, you need to configure the inventory file. Open the inventory file in a text editor:

nano inventory

Modify the following variables according to your environment:

[tower]
localhost ansible_connection=local

[database]

[all:vars]
admin_password='your_admin_password'
pg_password='your_postgres_password'
rabbitmq_password='your_rabbitmq_password'

Step 5: Run the Installation Script

Run the installation script to install Ansible Tower:

sudo ./setup.sh

The script will install Ansible Tower and its dependencies. This process may take a few minutes.

Step 6: Access Ansible Tower

Once the installation is complete, you can access Ansible Tower through your web browser. Open your browser and navigate to:

http://<your_server_ip>/

Log in using the default credentials:

  • Username: admin
  • Password: The password you set in the inventory file.

Troubleshooting

Common Issues

  1. Installation Fails Due to Missing Dependencies:

    • Ensure all required dependencies are installed and up-to-date.
    • Check the installation logs for specific error messages.

  2. Cannot Access Ansible Tower Web Interface:

    • Verify that the necessary ports (80 and 443) are open.
    • Ensure that your firewall settings allow traffic on these ports.

  3. Database Connection Issues:

    • Double-check the database configuration in the inventory file.
    • Ensure that the PostgreSQL service is running.

Conclusion

In this section, you learned how to install Ansible Tower on your system. You updated your system, installed necessary dependencies, downloaded and configured Ansible Tower, and finally ran the installation script. Now, you can access Ansible Tower through your web browser and start managing your Ansible projects with a powerful web-based interface.

In the next section, we will explore how to use Ansible Tower to manage projects and inventories.

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