Ansible Curriculum
What Is Awx
In the previous module, we completed our exploration of cloud-native systems, detailing AWS compute, storage, firewalls, and Kubernetes cluster integrations using the k8s and helm modules. While command-line executions are suitable for standalone tasks or local testing, running playbooks manually from terminal consoles scale poorly in enterprise environments.
To manage automation across large teams, you need a centralized platform that provides a graphical user interface, access control, audit logs, and API interfaces. This is what AWX provides.
In this guide, we will cover the capabilities of AWX, its role as the upstream project for Red Hat Ansible Automation Controller (formerly Ansible Tower), and its core features.
1. The Core Purpose of AWX
AWX acts as a central hub for all your Ansible automation. Instead of each developer installing Ansible and running playbooks locally, AWX serves as a web-based dashboard and API service that:
- Centralizes Credentials: Store SSH keys, AWS access keys, and Vault passwords securely. Playbook runners execute tasks without ever exposing plaintext keys to developers.
- Enforces Role-Based Access Control (RBAC): Define who can run specific playbooks against specific inventories (e.g., granting developers access to run deploy playbooks on staging, but restricting production runs to the operations team).
- Automates Job Scheduling: Configure playbooks to run on recurring schedules (such as nightly security audits or hourly backup syncs) without setting up local cron jobs.
- Provides a Web API: Integrate Ansible deployments with external monitoring tools, chat services (like Slack), or ticketing systems (like Jira).
2. The Relationship Between AWX and Ansible Tower
It is important to understand how AWX relates to Red Hat's enterprise offerings:
- AWX: The open-source, community-supported upstream project. It is fast-moving, releases new versions frequently, and serves as the development engine for new features.
- Ansible Tower / Automation Controller: The enterprise, commercial product. It is built on top of stable releases of AWX, includes Red Hat technical support, and undergoes strict quality assurance testing.
If you want a free, self-managed automation dashboard for local teams, AWX is the choice. For production environments requiring support SLA guarantees, migrate workloads to Ansible Automation Controller.
3. Core AWX Concepts
To configure AWX, you must understand its basic objects:
Organizations
The highest-level logical grouping. Organizations allow you to partition resources (inventories, credentials, projects) for different business units or departments.
Projects
A project links AWX to a Git repository containing your playbooks, roles, and variable files. AWX pulls the repository to ensure it always runs the latest code.
Credentials
Secure storage blocks. AWX encrypts credentials using AES-256 and decrypts them only in memory during job execution.
Inventories
An inventory defines the target hosts. AWX supports static inventories, custom files, and dynamic inventory syncs (like querying active AWS EC2 instances).
4. Operational Best Practices: AWX Administration
- Keep Git as the source: Always treat your Git repository as the source of truth. Do not edit playbooks directly inside the AWX interface.
- Limit Organization Admin access: Restrict high-level Organization Admin roles to key system administrators. Use granular team permissions for routine tasks.
- Monitor job history: Regularly inspect job logs and configure notification alerts to catch failed runs early.
5. AWX Object Reference Summary
Now that we have covered the conceptual framework of AWX, the next step is analyzing the differences in detail. In the next section, we will cover the differences between AWX and Ansible Tower.