What is eBPF in production Kubernetes?

Kernel tech for safe, high-speed programs that observe and enforce networking, security, and tracing—replacing sidecars without code changes.

How do I install Cilium for eBPF on Kubernetes?

Use Helm: helm install cilium cilium/cilium --version 1.15.0 with Hubble and kubeProxyReplacement flags enabled.

Does eBPF replace Istio sidecars completely?

Yes for networking and observability in most cases—saved one team 75GB RAM, dropped latency 18ms. This? Platform shift. Feel the wonder yet?

⚙️ DevOps & Platform Eng

eBPF in Kubernetes: How I Slashed 75GB Sidecar RAM to 12GB Without Touching Code

Your Kubernetes cluster's choking on sidecar bloat? One team ditched 75GB of RAM overhead for a lean 12GB eBPF stack, boosting speed and slashing bills. Here's the playbook.

theAIcatchup Apr 09, 2026 3 min read

Kubernetes dashboard comparing 75GB sidecar RAM vs 12GB eBPF stack with Cilium Hubble UI

⚡ Key Takeaways

eBPF stack (Cilium, Pixie, Tetragon, Beyla) cuts Kubernetes sidecar RAM from 75GB to 12GB with zero code changes. 𝕏
67% of large K8s teams use eBPF now—migration takes 8 weeks, yields 18ms latency wins. 𝕏
By 2026, sidecars become obsolete, like proprietary networks pre-TCP/IP. 𝕏

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theAIcatchup

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#Cilium #Kubernetes #eBPF #observability #sidecars

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