Monitor API Performance with Runscope and Datadog

The article details four common misconfigurations in Cilium network policies that often lead to blocked traffic: using selectors that don't match intended pods, forgetting to allow DNS traffic, improperly handling host networking, and failing to account for return traffic. By understanding and avoiding these pitfalls—like ensuring correct label matching and explicitly allowing essential services—users can effectively troubleshoot and resolve connectivity issues in their Kubernetes clusters using Cilium. Essentially, it's a guide to prevent common Cilium policy mistakes and maintain network flow.