What is eBPF in Kubernetes?

Kernel tech for safe, high-perf programs. Replaces sidecars for networking, observability, security — zero pod overhead.

Can I ditch Istio for Cilium tomorrow?

Test in staging first. Needs modern kernel. Eight weeks max for full swap.

Nope. Tools like Pixie, Beyla auto-instrument. Pure cluster magic.

🏗️ DevOps & Infrastructure

Ever wonder why your Kubernetes bill keeps climbing? Sidecars are the silent killer — until eBPF steps in and guts them.

theAIcatchup Apr 09, 2026 3 min read

eBPF stack (Cilium, Pixie, Tetragon, Beyla) cuts sidecar RAM from 75GB to 12GB at 500 pods. 𝕏
Zero app code changes, kernel-level efficiency beats userspace proxies. 𝕏
By 2026, sidecars fade; eBPF dominates prod Kubernetes observability. 𝕏

Published by

Community-driven. Code-first.

#Cilium #Kubernetes #eBPF #observability #sidecars

Get the best Open Source stories of the week in your inbox — no noise, no spam.

Originally reported by Dev.to