A comprehensive deep-dive into Kubernetes NetworkPolicy: the ingress/egress model, default-deny patterns, the DNS gap, namespace selectors, Cilium L7/FQDN policies, AdminNetworkPolicy, and debugging blocked traffic.
Cilium
-
Kubernetes Network Policies in Depth: The Complete Guide -
Cilium as a Full CNI: Beyond Observability Cilium is far more than eBPF observability — a full Kubernetes CNI that replaces kube-proxy, enforces identity-based network policy, peers BGP, meshes services, and load-balances in hardware. How it works and how to run it as your networking layer.
-
eBPF for Observability A practical guide to using eBPF for deep observability — tracing system calls and kernel events with bpftrace, profiling applications with BCC tools, and building network visibility with Cilium.
-
Network Observability with Cilium and Hubble: Complete Visibility Into Your Kubernetes Network A comprehensive guide to Cilium and Hubble — installing the eBPF-based CNI, capturing flow logs, debugging network policies, building Grafana dashboards, and achieving complete network visibility in Kubernetes.