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Simplifying the Networking and Security Stack With Cilium, Hubble, and Tetragon#

KubeCon + CloudNativeCon Europe 2025 (London) digest Program Core pick London · 1–4 April 2025

Abstract Recording

Bill Mulligan & Anna Kapuścińska, Isovalent at Cisco; Bowei Du, Google; Amir Kheirkhahan, DBSchenker — Core

Play the recording: Simplifying the Networking and Security Stack With Cilium, Hubble, and Tetragon

  • Why: The flagship Cilium project update, with real adopter voices (DB Schenker, Google) rather than just maintainer roadmap — worth tracking as the state of the eBPF networking/security/observability stack the PM already follows.
  • What: Updates on Cilium's latest release covering multi-cluster networking, scaling to 65,000 nodes, service-mesh use cases, plus Hubble (network observability) and Tetragon (security observability/runtime enforcement) sub-projects. (from abstract only)
  • How: A single eBPF-powered datapath replaces a fragmented toolchain (separate CNI, observability agent, and runtime security tools) with one unified stack. (from abstract only)
  • Where applicable: General Kubernetes CNI/networking-security deployments; the 65,000-node scaling claim is a specific data point worth verifying against your own scale requirements rather than assuming linear applicability.