My Podman containers on a custom network couldn’t resolve each other by name — even though everything looked correct. After methodically eliminating layers (network config, DNS daemon, container state, firewall), I discovered UFW was silently blocking UDP port 53 on the new podman4 bridge interface. The fix? One ufw allow rule. Here’s how I got…
Category: Networking & Systems Administration
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A Practical Guide to AWX: From Setup to Automation
Introduction to AWX AWX is the open source upstream project for Red Hat Ansible Automation Platform, providing a web-based interface, REST API, and task engine for Ansible. It helps teams manage automation at scale with role-based access control, scheduling, and workflow orchestration. 0. AWX Structure Overview 1. Creating an Organization Organizations are the highest level…
Podman Networking Demystified: When to Use Pods, Networks, or Both
If you’ve transitioned from Docker to Podman, you’ve likely encountered a fundamental question: “How should my containers communicate?” Unlike Docker’s straightforward container-to-container networking, Podman introduces pods—a powerful concept borrowed from Kubernetes that adds both capability and complexity.