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“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...

cncf.io

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…

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Cilium @cilium.io · 23/09/2026

“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...

cncf.io

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…

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Cilium @cilium.io · 17/09/2026

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...

cncf.io

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.

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Cilium @cilium.io · 14/09/2026

“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...

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Cilium @cilium.io · 10/09/2026

🐝 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...

github.com

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...

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Cilium @cilium.io · 09/09/2026

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...

youtube.com

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…

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Cilium @cilium.io · 03/09/2026

CiliumCon will be back for KubeCon + CloudNativeCon Europe 2027 and the CFP is open now! Submit a talk by 18 October, and we'll see you in Barcelona! events.linuxfoundation.org/kubecon-clou...

events.linuxfoundation.org

CiliumCon | LF Events

Cilium is an open source, widely-used, and highly scalable cloud native networking, observability, and security solution based on the kernel technology eBPF, that connects workloads in Kubernetes and…

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Cilium @cilium.io · 26/08/2026

Cilium 1.20 closes one of the last gaps to IPv4/IPv6 feature parity: ENI IPAM mode now supports IPv6 on AWS, in beta. Watch a demo in a recent eCHO: www.youtube.com/live/Sk1mhWm... Learn more in the docs: docs.cilium.io/en/v1.20/net...

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Cilium @cilium.io · 19/08/2026

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...

adyen.com

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.

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Cilium @cilium.io · 17/08/2026

At KubeCon Japan Liz Rice gave a talk on catching a compromised CI pipeline with Tetragon, including a demo killing a secret exfiltration mid-connection that you can run yourself. Demo: github.com/lizrice/tetr... Slides: speakerdeck.com/lizrice/dete...

github.com

GitHub - lizrice/tetragon-ci: Demonstrate using Tetragon within GitHub Actions

Demonstrate using Tetragon within GitHub Actions. Contribute to lizrice/tetragon-ci development by creating an account on GitHub.

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Cilium @cilium.io · 06/08/2026

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...

youtube.com

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…

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Cilium @cilium.io · 03/08/2026

"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...

cncf.io

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…

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Cilium @cilium.io · 23/07/2026

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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Cilium @cilium.io · 21/07/2026

The final post in Cilium's CI/CD hardening series by André Martins and Feroz Salam is out, covering isolating credentials and signing releases, and the gaps that are still open. Read more: www.cncf.io/blog/2026/06... #Cilium #eBPF #Kubernetes #SupplyChainSecurity

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Cilium @cilium.io · 14/07/2026

🐝 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...

github.com

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...

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Cilium @cilium.io · 08/07/2026

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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Cilium @cilium.io · 06/07/2026

Orange Innovation built a security operations platform for a regulated production environment on #Kubernetes, with #Cilium as the networking infrastructure. Read more from Willem Berroubache: www.cncf.io/blog/2026/06...

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Cilium @cilium.io · 01/07/2026

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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Cilium @cilium.io · 25/06/2026

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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Cilium @cilium.io · 25/06/2026

André Martins and Feroz Salam wrote up how Cilium hardens its CI/CD pipeline. Part 1, now live on the Cloud Native Computing Foundation Blog, covers access control: who can trigger builds and what code CI is allowed to execute. Read more: www.cncf.io/blog/2026/06...

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Cilium @cilium.io · 15/06/2026

The CFP for #CiliumCon at #KubeCon North America 2026 closes Sun, June 21st. If you're working on #Cilium, #eBPF, networking, security, or observability in #cloudnative environments, we'd love for you to submit a talk. 📝 Learn more: events.linuxfoundation.org/kubecon-clou...

events.linuxfoundation.org

CiliumCon | LF Events

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Cilium @cilium.io · 11/06/2026

The follow-up to Buzzing Across Space, the illustrated guide to eBPF is now available for #Cilium and goes deep into CNI, Cluster Mesh, Hubble, network policy, service mesh, and Tetragon. It's free to download here 📖 isovalent.com/books/childr...

isovalent.com

Technical Books Buzzing Beyond Clouds: The Illustrated Children's Guide to Cilium

Buzzing Beyond Clouds: The Illustrated Children's Guide to Cilium is the follow up to Buzzing Across Space: The Illustrated Children's Guide to eBPF. This second illustrated book brings the Cilium…

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Cilium @cilium.io · 09/06/2026

OpenAI runs #Cilium as its default #Kubernetes networking stack across multiple cloud environments and bare metal. They turned to Cilium for a consistent CNI, L4/L7 policy without sprawl, and Hubble for production visibility. Read the full case study: isovalent.com/blog/post/op...

isovalent.com

OpenAI Uses Isovalent for a Common Networking for AI Infrastructure

OpenAI uses Isovalent Networking for Kubernetes, built on Cilium, for consistent networking, policy, and troubleshooting across AI infrastructure.

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Cilium @cilium.io · 02/06/2026

🐝 Release Announcement 🐝 Cilium v1.20.0-pre.3 has been released! github.com/cilium/ciliu... A big thank you to everyone who contributed to & tested the previous pre-releases. 🙏 There are v1.20.0-pre.3 OSS docs available for those who want to pull & try it: docs.cilium.io/en/v1.20.0-p...

github.com

Release 1.20.0-pre.3 · cilium/cilium

Summary of Changes Major Changes: Gateway API: ExternalAuth filter support for HTTPRoutes Cilium now supports the ExternalAuth filter type in HTTPRoutes (GEP-1494). Routes can delegate authorizat...

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Cilium @cilium.io · 02/06/2026

At #CiliumCon Europe 2026, Weizhou Lan walked through how DaoCloud uses #Cilium and Spiderpool to enforce global north-south bandwidth limits for tenants in multi-replica gateway deployments, something there's no native solution for today. 📺️ Watch for details: youtube.com/watch?v=uAOGDiCFG68

youtube.com

Lightning Talk: Closing the Gap: Fair North–South Bandwidth Management for Tenants - Weizhou Lan

Connect with our current graduated, incubating, and sandbox projects as the community gathers to further the education and advancement of cloud native computing. Learn more at…

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Cilium @cilium.io · 28/05/2026

Multi-Pool IPAM is stable in Cilium 1.19. Tomorrow, Duffie Cooley will cover what's new on eCHO: label selectors for PodIPPools, IPsec across pools in direct routing mode, and new masquerade controls for source NAT. #eBPF & #Cilium Office Hours 📺️ Join live: www.youtube.com/watch?v=vF62...

youtube.com

eCHO Episode 210: Exploring Multi-Pool IPAM with Cilium 1.19

Join Duffie Cooley for a deep dive into Multi-Pool IPAM, now stable in Cilium 1.19. He'll explore what's new: label selector support for PodIPPools giving teams fine-grained control over IP…

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Cilium @cilium.io · 27/05/2026

A lot is actively in development across the Cilium project. Martynas Pumputis ran through the highlights at CiliumCon Europe 2026, from datapath plugins to Big TCP over UDP tunnels, multihoming, clang-free, hybrid routing, scale-to-zero, & more. 📺 Watch the talk: www.youtube.com/watch?v=QR-2...

youtube.com

Lightning Talk: What's Happening in Cilium? Current Projects You Need To See - Martynas Pumputis

Connect with our current graduated, incubating, and sandbox projects as the community gathers to further the education and advancement of cloud native computing. Learn more at…

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Cilium @cilium.io · 21/05/2026

Scaling Tetragon can have a hidden cost: every policy allocates BPF maps in kernel memory, even for features you're not using. SUSE spent time in the Tetragon codebase actually fixing this and got several fixes merged. Learn more in this talk from #CiliumCon Europe: www.youtube.com/watch?v=bgCg...

youtube.com

One Policy To Rule Them All? Scaling Tetragon Without Flooding Your Cluster - Alessio Biancalana

Connect with our current graduated, incubating, and sandbox projects as the community gathers to further the education and advancement of cloud native computing. Learn more at https://kubecon.io One…

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Cilium @cilium.io · 16/05/2026

🐝 Release Announcement 🐝 Cilium v1.17.16, v1.18.10, and v1.19.4 have been released. Have a look through the release notes below for details: v1.17.16: github.com/cilium/ciliu... v1.18.10: github.com/cilium/ciliu... v1.19.4: github.com/cilium/ciliu... A big thank you to all of the contributors!

github.com

Release 1.17.16 · cilium/cilium

Summary of Changes Bugfixes: CiliumLocalRedirectPolicy addressMatcher now refuses to override an existing Service's frontend (prevents cross-namespace traffic hijacking and service-map corruption ...

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Cilium @cilium.io · 15/05/2026

Join today's eCHO with Duffie Cooley to learn how Cilium powers networking on VMware Kubernetes Service (VKS)! #eBPF & #Cilium Office Hours 📆 Friday, May 15, 10am ET / 4pm CEST 📺️ Join live: www.youtube.com/watch?v=wn7q...

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Cilium @cilium.io · 13/05/2026

Etraveli Group handles hundreds of millions of flight searches daily across on-prem data centers. At CiliumCon 2026, Mikael Johansson Länsberg walked through how they replaced a legacy solution with Cilium's LB-IPAM, BGP control plane & Gateway API. 📺 www.youtube.com/watch?v=KWS-...

youtube.com

Cloud Native Promises, On-Premises: Bump Your Load Balancing To V2 With... Mikael Johansson Länsberg

Connect with our current graduated, incubating, and sandbox projects as the community gathers to further the education and advancement of cloud native computing. Learn more at…

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Reposted by Cilium

Cloud Native Days Italy @cloudnativedaysitaly.org · 22/04/2026

🎉 OPEN SOURCE PROJECT ANNOUNCEMENT: @cilium.io We're excited to welcome Cilium to the Community & Open Source Area at Cloud Native Days Italy 2026! What is Cilium? An open-source project powered by eBPF to provide networking, security, and observability for cloud-native environments.

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Cilium @cilium.io · 12/05/2026

#CiliumCon will be back for# KubeCon + #CloudNativeCon North America 2026 in Salt Lake City! 🏔️ The CFP is open now through June 21. Submit your talks and feel free to reach out to the community if you need help 🙋 🙋‍♀️ events.linuxfoundation.org/kubecon-clou...

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Cilium @cilium.io · 08/05/2026

Multi-cluster networking can get complicated fast. At CiliumCon, Arthur Outhenin-Chalandre (Ledger) and Quentin Swiech (S3NS) walked through #Cilium ClusterMesh inproduction & shared a GitOps-ready blueprint, including a live demo with FluxCD. 📺 www.youtube.com/watch?v=ENgE...

youtube.com

Connecting the World: Your Hands-on Guide To Cilium Cl... Arthur Outhenin-Chalandre & Quentin Swiech

Connect with our current graduated, incubating, and sandbox projects as the community gathers to further the education and advancement of cloud native computing. Learn more at…

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Cilium @cilium.io · 06/05/2026

Join Nico Vibert and Dan Finneran this Friday for a for a sneak peek at a lab demonstrating how #Tetragon can protect against an #OpenClaw agent trying to access or share private data. #eBPF & #Cilium Office Hours 📆 Friday, May 8, 9am ET / 3pm CEST 📺️ Join live: www.youtube.com/watch?v=G2R3...

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Cilium @cilium.io · 05/05/2026

Kubernetes didn't win because it was standardized. It became the standard because it solved real problems. Watch Bill Mulligan's keynote from CiliumCon Europe 2026, which applies that same logic to what's next: eBPF and Tetragon. 📺 www.youtube.com/watch?v=XQuL...

youtube.com

CiliumCon | Sponsored Keynote - Built in the Open: Why Cisco Is Betting on eBPF, Ci... Bill Mulligan

Connect with our current graduated, incubating, and sandbox projects as the community gathers to further the education and advancement of cloud native computing. Learn more at…

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Cilium @cilium.io · 30/04/2026

Can #Cilium's primary CNI run entirely on a DPU? Can it be done with minimal code changes, no added complexity for users, & full hardware acceleration? At the most recent CiliumCon, Vijay Inavolu from Marvell walked through the architecture and performance results ➡️ www.youtube.com/watch?v=S9W8...

youtube.com

Lightning Talk: Accelerating Cilium: Our Journey on Offloading Cilium To DPU - Vijay Inavolu

Connect with our current graduated, incubating, and sandbox projects as the community gathers to further the education and advancement of cloud native computing. Learn more at…

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Cilium @cilium.io · 27/04/2026

It's always DNS. Even at the edge. Roche runs Kubernetes clusters in hospitals and labs where customer-managed DNS won't resolve public domains. See how Cilium quietly intercepts failing DNS requests and reroutes them w/o firewall or app changes. 📺

youtube.com

It Is Always DNS… Even at the Edge: Taming Proxy-Only Lookups Wi... Hector Monsalve & Thomas Gosteli

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Cilium @cilium.io · 24/04/2026

Hubble flow logs are often the biggest driver of observability costs. A new feature on Cilium 1.19, flow aggregation, was built to address this. 📺 Learn more in this talk from CiliumCon EU 2026: www.youtube.com/watch?v=mXK7...

youtube.com

Network Flow Aggregation: Pay for the Logs You... Mereta Degutyte, Anubhab Majumdar & Vamsi Kalapala

Connect with our current graduated, incubating, and sandbox projects as the community gathers to further the education and advancement of cloud native computing. Learn more at…

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Cilium @cilium.io · 17/04/2026

🐝 Release Announcement 🐝 Cilium v1.19.3, v1.18.9, and v1.17.15 have been released. Please see the release notes below for details, and a big thank you to all of the contributors! v1.19.3: github.com/cilium/ciliu... v1.18.9: github.com/cilium/ciliu... v1.17.15: github.com/cilium/ciliu...

github.com

Release 1.19.3 · cilium/cilium

Summary of Changes Minor Changes: Fix performance bug in L7 policy proxy redirect handling (Backport PR #44828, Upstream PR #44613, @fristonio) Fixes issue where the Cilium agent fails to initiali...

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Cilium @cilium.io · 16/04/2026

The recordings from #CiliumCon Europe 2026 are live! 🚲️ Catch up on anything you missed, or watch your favorite talk again. 📺️ See them all here: www.youtube.com/playlist?lis... #Cilium #KubeCon #eBPF

youtube.com

CiliumCon Europe 2026

Share your videos with friends, family, and the world

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Cilium @cilium.io · 09/04/2026

10 years of Cilium: During the maintainers track at #KubeCon Europe, Bill Mulligan, Paul Arah, Marcelo Mello, and Neha Aggarwal covered where the project stands and what's next. 🐝 The session recording is now live: www.youtube.com/watch?v=EN_7...

youtube.com

10 Years of Cilium: Connecting, Securing, and Simplifying the... Bill M, Paul A, Marcelo M & Neha A

Don't miss out! Join us at our next KubeCon + CloudNativeCon events in Mumbai, India (18-19 June, 2026), Yokohama, Japan (29-30 July, 2026), and Shanghai, China (8-9 September, 2026). Connect with…

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Cilium @cilium.io · 03/04/2026

If you missed your chance to grab a signed copy Cilium Up and Running at KubeCon, here's another opportunity. The authors will host live book circle next week. Top scorers will win a signed copy of the book. 📚️ 📅 April 9 at 5:00PM CEST | 11:00AM EDT 🔗 isovalent.com/events/2026-...

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Cilium @cilium.io · 02/04/2026

Tomorrow: Join Donia Chaiehloudj and Duffie Cooley to recap the highlights of #KubeCon Europe 2026 in Amsterdam, covering #CiliumCon, book signings, #Cilium user stories, and much more. eBPF & Cilium Office Hours 📆 Friday, April 3, 10am ET / 4pm CEST 📺 Join live: www.youtube.com/watch?v=y5KP...

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Cilium @cilium.io · 02/04/2026

🐝 Release Announcement 🐝 Cilium v1.20.0-pre.1 has been released! github.com/cilium/ciliu... There are v1.20.0-pre.1 OSS docs available if you want to pull this version & try it out. Feedback is welcome. docs.cilium.io/en/v1.20.0-p...

github.com

Release 1.20.0-pre.1 · cilium/cilium

Summary of Changes Major Changes: nodeport: support n/s dynamic source ip resolution (#44625, @ldelossa) policy: return ICMPv6 "Destination unreachable" on IPv6 egress policy denials (#44234, @And...

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Cilium @cilium.io · 25/03/2026

🐝 Release Announcement 🐝 Cilium v1.19.2, v1.18.8, and v1.17.14 have been released! Release notes with all the details ⬇️ v1.19.2: github.com/cilium/ciliu... v1.18.8: github.com/cilium/ciliu... v1.17.14: github.com/cilium/ciliu... A big thank you to all of the contributors 🙏

github.com

Release 1.19.2 · cilium/cilium

Summary of Changes Minor Changes: ztunnel/helm: move ztunnel daemonset management from operator to helm (Backport PR #44593, Upstream PR #43763, @nddq) Bugfixes: Add rate limiting to neighbor re...

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Cilium @cilium.io · 23/03/2026

#Cilium 1.19 added native mTLS support, bringing inline mutual TLS directly into the Cilium datapath and unifying authentication and encryption into a single operation. Read more about the effort to bring ztunnel to Cilium: cilium.io/blog/2026/03...

cilium.io

Native mTLS for Cilium: Transparent Encryption Meets Cloud Native Identity with ztunnel

Cilium now brings native, inline mTLS to the Kubernetes datapath with ztunnel, unifying authentication and encryption in a single ste...

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