Cilium

@cilium.io

eBPF-based Networking, Security, and Observability Open Source | http://cilium.io | http://ebpf.io | http://github.com/cilium/cilium Newsletter http://cilium.io/newsletter

Hadrien Patte of Datadog will share how they migrated hundreds of thousands of nodes across hundreds of production clusters from veth to netkit in a CiliumCon lightning talk. Monday, November 9 | 12:15 - 12:25 PM See the full schedule: cilium.io/blog/2026/09...

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Join Antonio Jimenez Martinez at CiliumCon for a look at what it takes to run OpenTelemetry eBPF Instrumentation (OBI) alongside Cilium since both run eBPF programs on the same node. Monday, November 9 | 12:00 - 12:10 PM See the full schedule: cilium.io/blog/2026/09...

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Marino Wijay will make the case at CiliumCon that IPv6 lets AI-scale Kubernetes keep growing since dense AI clusters can exhaust private IPv4 space faster than teams expect. The talk will include production examples and a live demo. See the full schedule: cilium.io/blog/2026/09...

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At CiliumConVenkat Gattupalli and Haibing Zhou of OpenAI will share hoe eBPF helped them trace rare packet loss in latency-sensitive inference workloads, and debug and mitigate latency issues. Monday, November 9 | 11:15 - 11:40 AM See the full CiliumCon schedule: cilium.io/blog/2026/09...

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Anubhab Majumdar and Vamsi Kalapala will use Cilium Cluster Mesh at CiliumCon to show what makes multi-cluster networking practical at cloud scale, from scoped service export to aligning the data path with network topology. See the full schedule: cilium.io/blog/2026/09...

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Liz Rice will give a keynote at CiliumCon about using Tetragon for runtime protection when vulnerabilities outpace patching. The talk will share the latest developments in guardrails and mitigations that can be deployed without downtime. See the full schedule: cilium.io/blog/2026/09...

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Kapil Agrawal and Luke Baker of ESnet will return to CiliumCon with an update on running K8s on an IPv6-only network. They'll cover what broke while building out ClusterMesh, BGP, and multi-pool IPAM without IPv4, and how they resolved it. See the full schedule: cilium.io/blog/2026/09...

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Join Quang Nguyen and Robin Gögge at CiliumCon next month as they explain how Cilium's sidecarless mTLS works. The session will include a live demo of upstream SPIRE work to bind certificates to a requesting process. See the full schedule: cilium.io/blog/2026/09...

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KubeCon and CiliumCon are just over a month away! As you plan your schedule, here's where to find Cilium during the event. There will be end user talks from OpenAI, Walmart Global Tech, and GEICO and from contributors and maintainers on new features. Find the full list: cilium.io/blog/2026/09...

“For AI workloads, network performance directly affects how fast our models train & how efficiently we use our hardware. Cilium offered direct routing without the complexity of managing different networking stacks across our clusters.” How Preferred Networks runs Cilium: www.cncf.io/case-studies...

Preferred Networks

Preferred Networks is one of Japan’s leading artificial intelligence companies, founded in Tokyo in 2014. It develops technology across the entire AI value chain, spanning AI chips…

cncf.io

“Cilium made my job genuinely easier. Hubble tells me what’s happening on the network in seconds. That’s the difference between guessing and knowing.” Read more about why Celonis standardized on Cilium for networking across 150+ Kubernetes clusters: www.cncf.io/case-studies...

Celonis

Celonis is the global leader in process intelligence. Industry-leading companies around the world trust Celonis and its global ecosystem of partners to make their AI agents, people, systems…

cncf.io

Splunk deployed Tetragon across Kubernetes clusters running Splunk Cloud Services to serve as the foundation of its runtime security observability program, replacing 3 existing tools. Today, CPU utilization has dropped by 67% and memory utilization by 74%. Learn more: www.cncf.io/case-studies...

Splunk

Splunk is a data analytics and observability platform that helps organizations search, monitor, and analyze machine-generated data from IT systems, security infrastructure, and business applications.

cncf.io

“Everything fits like Lego bricks, you can just enable new features.” - Mikael Johansson Lansberg Learn more about how Etraveli replaced proprietary load balancers and eliminated production downtime with Cilium in a new case study: www.cncf.io/case-studies...

🐝 Release Announcement 🐝 Cilium v1.21.0-pre.2 has been released: github.com/cilium/ciliu... Thank you to those who have tested and contributed to the previous pre-releases. There are docs available for those who want to pull this version & try it out: docs.cilium.io/en/v1.21.0-p...

Release 1.21.0-pre.2 · cilium/cilium

Summary of Changes ⚠️ Due to a release issue, the v1.21.0-pre.1 has not been completed, instead we are publishing v1.21.0-pre.2. This changelog contains the changes from v1.21.0-pre.0 to v1.21.0-pr...

github.com

Join Liz Rice and Duffie Cooley to see how Tetragon's runtime observability can monitor process, file, and network activity on GitHub Actions runners to protect CI/CD pipelines. eBPF & Cilium Office Hours 📆 Fri, 11 Sept, 9am PT 📺️ Join live: www.youtube.com/watch?v=rvrN...

eCHO Episode 215: Exploring Tetragon in GitHub Actions

Join Liz Rice and Duffie Cooley to look at using Tetragon in GitHub Actions. CI/CD pipelines are an increasingly popular attack target, and GitHub Actions runners run untrusted code with access to…

youtube.com

Adyen traced intermittent Kubernetes pod setup timeouts on high-resource nodes to Cilium's conntrack garbage collection, and fixed it with a one-line config change. The writeup walks through the diagnosis and the fix. www.adyen.com/knowledge-hu...

Solving mysterious Kubernetes pod setup timeouts by tuning conntrack garbage collection - Adyen

How Adyen resolved mysterious Kubernetes pod setup timeouts by optimizing Cilium CNI connection tracking garbage collection configuration.

adyen.com

Join us tomorrow, August 7 at 2pm ET for eCHO Episode 214. Duffie Cooley will talk with Hadrien Patte from Datadog to talk through his work on Cilium 1.20, and before. eBPF & Cilium Office Hours 📆 Friday, August 7 at 2pm ET / 8pm CEST 📺️ Join live: www.youtube.com/watch?v=MlwG...

Episode 214: Contributing to Cilium 1.20 with Hadrien Patte of Datadog

Join Duffie Cooley as he talks with Hadrien Patte from Datadog about what he's been working on in Cilium 1.20, how he got started contributing to CIlium, and how he finds issues to contribute…

youtube.com

"The biggest value for us is that Cilium simply works, and works well. With our previous CNIs, failures were painful and hard to resolve. Now we know that once Cilium is deployed, it will work. That reliability is genuinely valuable.” Read the case study from Michelin: www.cncf.io/case-studies...

Michelin

In 2024, Michelin’s Container as a Service (CaaS) platform team underwent a full rebuild of the company’s Kubernetes platform using open source software, replacing a vendor-based solution that had…

cncf.io

Join eCHO tomorrow for a look at Cilium 1.20, out at the end of the month. Nico Vibert and Donia Chaiehloudj will cover the latest features and updates. Bring any questions about the release! eBPF & Cilium Office Hours 📆 Friday, 24 July, 9am ET / 3pm CEST 📺️ Join live: youtube.com/live/Sk1mhWm...

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🐝 Release announcement 🐝 Cilium release candidate v1.20.0-rc.0 has is now live! This is the first candidate for the v1.20 release. Learn more: github.com/cilium/ciliu... There are v1.20.0-rc.0 OSS docs available if you want to pull this version and try it out: docs.cilium.io/en/v1.20.0-r...

Release 1.20.0-rc.0 · cilium/cilium

Summary of Changes Minor Changes: Adds a new policy entity, cluster-mesh, which selects all endpoints in all meshed clusters. Also, makes the cluster and cluster-mesh create significantly fewer po...

github.com

eCHO Episode 212: Securing OpenClaw with Tetragon This Friday, join Duffie Cooley as he walks through securing OpenClaw with Tetragon with a new hands-on lab. Duffie will demonstrate the what happens if OpenClw goes rogue, observe the damage with Tetragon, and write runtime enforcement policies.

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Part 2 of Cilium's CI/CD security series is live on the Cloud Native Computing Blog. André Martins and Feroz Salam walk through how the project locks down its dependency chain. Most of the takeaways apply to any project running on GitHub Actions, not just Cilium. www.cncf.io/blog/2026/06...

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ExternalAuth is coming to Cilium's Gateway API implementation in v1.20. Join tomorrow's eCHO episode, where Nico Vibert and Daniel Finneran preview a new hands-on lab on the feature. eBPF & Cilium Office Hours 📆 Friday, June 26, 3pm CEST 📺️ Join live: www.youtube.com/watch?v=fFVX...

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