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…
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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.