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
Open Source | http://cilium.io | http://ebpf.io | http://github.com/cilium/cilium
Newsletter http://cilium.io/newsletter
Pinned
Cilium
@cilium.io
· Jul 29
Release 1.18.0 · cilium/cilium
We are excited to announce the Cilium 1.18.0 release!
A total of 3298 new commits have been contributed to this release by a growing community of over 955 developers and over 22,000 GitHub stars! ⭐...
github.com
🐝 Release Announcement 🐝
We are excited to announce the Cilium 1.18.0 release! A total of 3,298 new commits have been contributed to this release by a growing community of over 955 developers and over 22,000 GitHub stars!
Learn more: github.com/cilium/ciliu...
We are excited to announce the Cilium 1.18.0 release! A total of 3,298 new commits have been contributed to this release by a growing community of over 955 developers and over 22,000 GitHub stars!
Learn more: github.com/cilium/ciliu...
#KubeCon is wrapping up but there's still more to come!
Join @mauilion.dev tomorrow for a KubeCon + CloudNativeCon recap covering the highlights, takeaways, & stories from KubeCon and #CiliumCon.
eBPF & Cilium Office Hours
📆 Friday, November 14, 2pm ET
🎥 Livestream: www.youtube.com/live/vv0Ufq_...
Join @mauilion.dev tomorrow for a KubeCon + CloudNativeCon recap covering the highlights, takeaways, & stories from KubeCon and #CiliumCon.
eBPF & Cilium Office Hours
📆 Friday, November 14, 2pm ET
🎥 Livestream: www.youtube.com/live/vv0Ufq_...
November 13, 2025 at 6:02 PM
#KubeCon is wrapping up but there's still more to come!
Join @mauilion.dev tomorrow for a KubeCon + CloudNativeCon recap covering the highlights, takeaways, & stories from KubeCon and #CiliumCon.
eBPF & Cilium Office Hours
📆 Friday, November 14, 2pm ET
🎥 Livestream: www.youtube.com/live/vv0Ufq_...
Join @mauilion.dev tomorrow for a KubeCon + CloudNativeCon recap covering the highlights, takeaways, & stories from KubeCon and #CiliumCon.
eBPF & Cilium Office Hours
📆 Friday, November 14, 2pm ET
🎥 Livestream: www.youtube.com/live/vv0Ufq_...
Cilium is ready for #KubeCon Day 2! Don't miss these sessions today 🐝
Liz Rice will discuss how OSS ecosystems and businesses can thrive together.
Giri Kuncoro & Joseph Pallamidessi from TikTok will share their IPv6 journey to #Cilium
Come chat with us in the Project Pavillion at booth 16B.
Liz Rice will discuss how OSS ecosystems and businesses can thrive together.
Giri Kuncoro & Joseph Pallamidessi from TikTok will share their IPv6 journey to #Cilium
Come chat with us in the Project Pavillion at booth 16B.
November 12, 2025 at 1:35 PM
Cilium is ready for #KubeCon + CloudNativeCon Day 1! Don't miss these sessions today featuring Cilium, Tetragon, & eBPF 🐝
Come chat with us in the Project Pavillion at booth 16B. We're around all day to answer questions, chat about issues, and hear how you're using Cilium!
Come chat with us in the Project Pavillion at booth 16B. We're around all day to answer questions, chat about issues, and hear how you're using Cilium!
November 11, 2025 at 1:05 PM
Cilium is ready for #KubeCon + CloudNativeCon Day 1! Don't miss these sessions today featuring Cilium, Tetragon, & eBPF 🐝
Come chat with us in the Project Pavillion at booth 16B. We're around all day to answer questions, chat about issues, and hear how you're using Cilium!
Come chat with us in the Project Pavillion at booth 16B. We're around all day to answer questions, chat about issues, and hear how you're using Cilium!
Today is the day! CiliumCon kicks off at 9am at #KubeCon 🐝
Co-chairs Bill Mulligan and Hemanth Malla curated a schedule full of talks and will kick off the day with Cilium updates.
📆 November 10, 9:00-12:30am
📍 Building B | Level 3 | B309
We can't wait to see you there!
Co-chairs Bill Mulligan and Hemanth Malla curated a schedule full of talks and will kick off the day with Cilium updates.
📆 November 10, 9:00-12:30am
📍 Building B | Level 3 | B309
We can't wait to see you there!
November 10, 2025 at 11:55 AM
Today is the day! CiliumCon kicks off at 9am at #KubeCon 🐝
Co-chairs Bill Mulligan and Hemanth Malla curated a schedule full of talks and will kick off the day with Cilium updates.
📆 November 10, 9:00-12:30am
📍 Building B | Level 3 | B309
We can't wait to see you there!
Co-chairs Bill Mulligan and Hemanth Malla curated a schedule full of talks and will kick off the day with Cilium updates.
📆 November 10, 9:00-12:30am
📍 Building B | Level 3 | B309
We can't wait to see you there!
🐝 New Cilium User 🐝
IONX's Infrastructure uses #Cilium as a CNI plugin for IPv4 and IPv6 networking, SCTP, service load balancing, and #Kubernetes services
github.com/cilium/ciliu...
IONX's Infrastructure uses #Cilium as a CNI plugin for IPv4 and IPv6 networking, SCTP, service load balancing, and #Kubernetes services
github.com/cilium/ciliu...
Add IONX Networks Limited to USERS.md by murali509 · Pull Request #42566 · cilium/cilium
Please ensure your pull request adheres to the following guidelines: For first time contributors, read Submitting a pull request All code is covered by unit and/or runtime tests where feasible. ...
github.com
November 8, 2025 at 8:01 AM
🐝 New Cilium User 🐝
IONX's Infrastructure uses #Cilium as a CNI plugin for IPv4 and IPv6 networking, SCTP, service load balancing, and #Kubernetes services
github.com/cilium/ciliu...
IONX's Infrastructure uses #Cilium as a CNI plugin for IPv4 and IPv6 networking, SCTP, service load balancing, and #Kubernetes services
github.com/cilium/ciliu...
Help us celebrate 10 years of #Cilium at #KubeCon! 🎉
Hear from contributors and adopters about the latest features and advancements making Cilium the networking and security data plane of the future.
📆 Tues, Nov 11, 2025 at 11:15am
🔗 buff.ly/uVKYGBM
Hear from contributors and adopters about the latest features and advancements making Cilium the networking and security data plane of the future.
📆 Tues, Nov 11, 2025 at 11:15am
🔗 buff.ly/uVKYGBM
November 7, 2025 at 4:30 PM
Help us celebrate 10 years of #Cilium at #KubeCon! 🎉
Hear from contributors and adopters about the latest features and advancements making Cilium the networking and security data plane of the future.
📆 Tues, Nov 11, 2025 at 11:15am
🔗 buff.ly/uVKYGBM
Hear from contributors and adopters about the latest features and advancements making Cilium the networking and security data plane of the future.
📆 Tues, Nov 11, 2025 at 11:15am
🔗 buff.ly/uVKYGBM
Heading to #KubeCon + #CloudNativeCon in Atlanta next week? Can't make it but want to stay in the loop?
Either way, join @mauilion.dev next Friday for a comprehensive recap.
eBPF & Cilium Office Hours
📆 Friday, November 14, 2pm E T
🎥 Livestream: www.youtube.com/live/vv0Ufq_...
Either way, join @mauilion.dev next Friday for a comprehensive recap.
eBPF & Cilium Office Hours
📆 Friday, November 14, 2pm E T
🎥 Livestream: www.youtube.com/live/vv0Ufq_...
November 7, 2025 at 2:15 PM
Heading to #KubeCon + #CloudNativeCon in Atlanta next week? Can't make it but want to stay in the loop?
Either way, join @mauilion.dev next Friday for a comprehensive recap.
eBPF & Cilium Office Hours
📆 Friday, November 14, 2pm E T
🎥 Livestream: www.youtube.com/live/vv0Ufq_...
Either way, join @mauilion.dev next Friday for a comprehensive recap.
eBPF & Cilium Office Hours
📆 Friday, November 14, 2pm E T
🎥 Livestream: www.youtube.com/live/vv0Ufq_...
Join Daniel Borkmann & Anton Protopopov as they unpack an architecture built on #Cilium and upstream Linux kernel enhancements that enable KubeVirt Pods to launch QEMU instances for for VM networking.
📍 KubeCon + CloudNativeCon
📆 Tues, Nov 11
buff.ly/UVXcABB
📍 KubeCon + CloudNativeCon
📆 Tues, Nov 11
buff.ly/UVXcABB
November 5, 2025 at 4:02 PM
Join Daniel Borkmann & Anton Protopopov as they unpack an architecture built on #Cilium and upstream Linux kernel enhancements that enable KubeVirt Pods to launch QEMU instances for for VM networking.
📍 KubeCon + CloudNativeCon
📆 Tues, Nov 11
buff.ly/UVXcABB
📍 KubeCon + CloudNativeCon
📆 Tues, Nov 11
buff.ly/UVXcABB
Reposted by Cilium
While working hard on identifying and explicitly allowing only legitimate traffic with @cilium.io, we stumbled upon a new feature to add a custom log field on hubble verdicts
Let's see how it goes ⤵️
blog.zwindler.fr/2025/11/03/c...
Let's see how it goes ⤵️
blog.zwindler.fr/2025/11/03/c...
Cilium's new policy log field: our use case
TL;DR Cilium 1.18 added a log field to CiliumNetworkPolicies to tag flows with custom labels. Great for filtering out expected blocked traffic from your monitoring dashboards!\nBut there’s a catch, un...
blog.zwindler.fr
November 4, 2025 at 9:44 AM
While working hard on identifying and explicitly allowing only legitimate traffic with @cilium.io, we stumbled upon a new feature to add a custom log field on hubble verdicts
Let's see how it goes ⤵️
blog.zwindler.fr/2025/11/03/c...
Let's see how it goes ⤵️
blog.zwindler.fr/2025/11/03/c...
🐝 Release Announcement 🐝
Cilium v1.19.0-pre.2 has been released:
github.com/cilium/ciliu...
Thank you to the contributors and for those who have tested previous pre-releases. There are docs available if you want to pull this version and try it out: docs.cilium.io/en/v1.19.0-p...
Cilium v1.19.0-pre.2 has been released:
github.com/cilium/ciliu...
Thank you to the contributors and for those who have tested previous pre-releases. There are docs available if you want to pull this version and try it out: docs.cilium.io/en/v1.19.0-p...
Release 1.19.0-pre.2 · cilium/cilium
Summary of Changes Major Changes: Cilium's Gateway API support now uses v1.4 of Gateway API. Cilium's GAMMA support now includes support for using GRPCRoute as well as HTTPRoute. (#41936, @youngni...
github.com
November 4, 2025 at 6:34 PM
🐝 Release Announcement 🐝
Cilium v1.19.0-pre.2 has been released:
github.com/cilium/ciliu...
Thank you to the contributors and for those who have tested previous pre-releases. There are docs available if you want to pull this version and try it out: docs.cilium.io/en/v1.19.0-p...
Cilium v1.19.0-pre.2 has been released:
github.com/cilium/ciliu...
Thank you to the contributors and for those who have tested previous pre-releases. There are docs available if you want to pull this version and try it out: docs.cilium.io/en/v1.19.0-p...
At #KubeCon next week? Hear how TikTok migrated its clusters to Cilium for its advanced security features like mutual authentication, high performance networking, and enhanced observability, and how the team made it work on IPv6 only datacenters 📱
kccncna2025.sched.com/event/27FbS/...
kccncna2025.sched.com/event/27FbS/...
November 3, 2025 at 4:15 PM
At #KubeCon next week? Hear how TikTok migrated its clusters to Cilium for its advanced security features like mutual authentication, high performance networking, and enhanced observability, and how the team made it work on IPv6 only datacenters 📱
kccncna2025.sched.com/event/27FbS/...
kccncna2025.sched.com/event/27FbS/...
🏰 From Squire to Network Knight – Defending the #Kubernetes Castle the #CloudNative Way
At Cloud Native University, Donia Chaiehloudj will explore how Cilium helps platform and security teams defend their Kubernetes “castle”
📅 Don’t miss it during KubeCon
🔗 buff.ly/3PRoc63
At Cloud Native University, Donia Chaiehloudj will explore how Cilium helps platform and security teams defend their Kubernetes “castle”
📅 Don’t miss it during KubeCon
🔗 buff.ly/3PRoc63
October 31, 2025 at 5:08 PM
🏰 From Squire to Network Knight – Defending the #Kubernetes Castle the #CloudNative Way
At Cloud Native University, Donia Chaiehloudj will explore how Cilium helps platform and security teams defend their Kubernetes “castle”
📅 Don’t miss it during KubeCon
🔗 buff.ly/3PRoc63
At Cloud Native University, Donia Chaiehloudj will explore how Cilium helps platform and security teams defend their Kubernetes “castle”
📅 Don’t miss it during KubeCon
🔗 buff.ly/3PRoc63
Case study: ESnet’s success with Cilium demonstrates that IPv6-only Kubernetes deployments are not only viable, but also work exceptionally well at government scale. This has provided a blueprint for other national laboratories facing similar mandates.
Read more: www.cncf.io/case-studies...
Read more: www.cncf.io/case-studies...
ESnet (Energy Sciences Network)
ESnet, the data circulatory system for the U.S. Department of Energy faced high operational overhead from running individual VMs for a single containerized application with no unified observability…
www.cncf.io
October 31, 2025 at 2:02 PM
Case study: ESnet’s success with Cilium demonstrates that IPv6-only Kubernetes deployments are not only viable, but also work exceptionally well at government scale. This has provided a blueprint for other national laboratories facing similar mandates.
Read more: www.cncf.io/case-studies...
Read more: www.cncf.io/case-studies...
🐝 New User Alert 🐝
Vietnam Post Cloud uses Cilium in their production, staging, and development clusters for Networking, NetworkPolicy, IPVLAN, and more!
Vietnam Post Cloud uses Cilium in their production, staging, and development clusters for Networking, NetworkPolicy, IPVLAN, and more!
Add Vietnam Post Cloud to USERS.md by chint-vnpost-vn · Pull Request #42446 · cilium/cilium
* N: Vietnam Post Cloud D: Vietnnam Post Cloud is using Cilium in their production, staging, and development clusters U: Networking, NetworkPolicy, Services, IPVLAN L: https://www.vietnampost...
github.com
October 29, 2025 at 8:17 PM
🐝 New User Alert 🐝
Vietnam Post Cloud uses Cilium in their production, staging, and development clusters for Networking, NetworkPolicy, IPVLAN, and more!
Vietnam Post Cloud uses Cilium in their production, staging, and development clusters for Networking, NetworkPolicy, IPVLAN, and more!
Join Gyutae Bae to explore a real bug in Cilium that caused it to terminate active sessions. He will dissect the root cause in the eBPF datapath and demonstrate the now-merged fix.
🔗 colocatedeventsna2025.sched.com/event/28D2o/...
🔗 colocatedeventsna2025.sched.com/event/28D2o/...
October 29, 2025 at 6:32 PM
Join Gyutae Bae to explore a real bug in Cilium that caused it to terminate active sessions. He will dissect the root cause in the eBPF datapath and demonstrate the now-merged fix.
🔗 colocatedeventsna2025.sched.com/event/28D2o/...
🔗 colocatedeventsna2025.sched.com/event/28D2o/...
Join @thebsdbox.co.uk this Friday to get hands on with eBPF and Kprobes.
eBPF & Cilium Office Hours
📆 Friday, 31 October, 2pm GMT
🎥 Livestream: www.youtube.com/live/JMnG5Hf...
eBPF & Cilium Office Hours
📆 Friday, 31 October, 2pm GMT
🎥 Livestream: www.youtube.com/live/JMnG5Hf...
October 29, 2025 at 11:13 AM
Join @thebsdbox.co.uk this Friday to get hands on with eBPF and Kprobes.
eBPF & Cilium Office Hours
📆 Friday, 31 October, 2pm GMT
🎥 Livestream: www.youtube.com/live/JMnG5Hf...
eBPF & Cilium Office Hours
📆 Friday, 31 October, 2pm GMT
🎥 Livestream: www.youtube.com/live/JMnG5Hf...
Kubernetes SIG Security is collaborating with OWASP to identify the top 10 Kubernetes risks for 2025.
Please take a few minutes to fill in a quick survey to help the community prioritize risks in the ecosystem: docs.google.com/forms/d/e/1F...
Please take a few minutes to fill in a quick survey to help the community prioritize risks in the ecosystem: docs.google.com/forms/d/e/1F...
October 28, 2025 at 3:15 PM
Kubernetes SIG Security is collaborating with OWASP to identify the top 10 Kubernetes risks for 2025.
Please take a few minutes to fill in a quick survey to help the community prioritize risks in the ecosystem: docs.google.com/forms/d/e/1F...
Please take a few minutes to fill in a quick survey to help the community prioritize risks in the ecosystem: docs.google.com/forms/d/e/1F...
Reposted by Cilium
What's been sitting in my Obsidian notes for over a year now, I finally took the time to put it up on my blog. I have a few more blog posts coming up as part of this series. #kubernetes #ipv6 #cilium
netops2devops.net/series/kuber...
netops2devops.net/series/kuber...
Kubernetes in IPv6 Only Networks
netops2devops.net
October 25, 2025 at 5:19 PM
What's been sitting in my Obsidian notes for over a year now, I finally took the time to put it up on my blog. I have a few more blog posts coming up as part of this series. #kubernetes #ipv6 #cilium
netops2devops.net/series/kuber...
netops2devops.net/series/kuber...
Reposted by Cilium
Cilium’s new Hubble flow policy log field www.danielstechblog.io/ciliums-new-... #Kubernetes #Cilium #AzureKubernetesService #AzureDataExplorer
Cilium’s new Hubble flow policy log field – Daniel's Tech Blog
www.danielstechblog.io
October 26, 2025 at 9:02 PM
Cilium’s new Hubble flow policy log field www.danielstechblog.io/ciliums-new-... #Kubernetes #Cilium #AzureKubernetesService #AzureDataExplorer
Can we really parse DNS in #eBPF? @hemanthmalla.bsky.social will share how we can implement a better system natively with eBPF & what it takes to integrate it into #Cilium’s toFQDN policy sub-system.
Join us at #CiliumCon on Nov 10!
colocatedeventsna2025.sched.com/event/28D2Q/...
Join us at #CiliumCon on Nov 10!
colocatedeventsna2025.sched.com/event/28D2Q/...
CNCF-hosted Co-located Events North America 2025: Can We Really Parse DNS in eBPF? Improvi...
View more about this event at CNCF-hosted Co-located Events North America 2025
colocatedeventsna2025.sched.com
October 27, 2025 at 6:05 PM
Can we really parse DNS in #eBPF? @hemanthmalla.bsky.social will share how we can implement a better system natively with eBPF & what it takes to integrate it into #Cilium’s toFQDN policy sub-system.
Join us at #CiliumCon on Nov 10!
colocatedeventsna2025.sched.com/event/28D2Q/...
Join us at #CiliumCon on Nov 10!
colocatedeventsna2025.sched.com/event/28D2Q/...
Cilium has surpassed 1,000 contributors 🚀 🐝
Thank you to the community for all the contributions over the past 10 years!
Thank you to the community for all the contributions over the past 10 years!
October 27, 2025 at 2:12 PM
Cilium has surpassed 1,000 contributors 🚀 🐝
Thank you to the community for all the contributions over the past 10 years!
Thank you to the community for all the contributions over the past 10 years!
In a sprawling multi-cluster network, a security breach in one pod is never just a local problem. It’s the potential start of a wildfire 🔥
Join Google's Anmol Krishan Sachdeva & Paras Mamgain at #CiliumCon for a live-fire demo contained by Cilium, Tetragon, & Hubble.
buff.ly/p4Py9ZH
Join Google's Anmol Krishan Sachdeva & Paras Mamgain at #CiliumCon for a live-fire demo contained by Cilium, Tetragon, & Hubble.
buff.ly/p4Py9ZH
October 24, 2025 at 4:49 PM
In a sprawling multi-cluster network, a security breach in one pod is never just a local problem. It’s the potential start of a wildfire 🔥
Join Google's Anmol Krishan Sachdeva & Paras Mamgain at #CiliumCon for a live-fire demo contained by Cilium, Tetragon, & Hubble.
buff.ly/p4Py9ZH
Join Google's Anmol Krishan Sachdeva & Paras Mamgain at #CiliumCon for a live-fire demo contained by Cilium, Tetragon, & Hubble.
buff.ly/p4Py9ZH
🐝 Release Announcement 🐝
Cilium v1.18.3, v1.17.9, and v1.16.16 have been released. Thank you to all the contributors!
See the release notes below for details 👇
- v1.18.3: github.com/cilium/ciliu...
- v1.17.9: github.com/cilium/ciliu...
- v1.16.16: github.com/cilium/ciliu...
Cilium v1.18.3, v1.17.9, and v1.16.16 have been released. Thank you to all the contributors!
See the release notes below for details 👇
- v1.18.3: github.com/cilium/ciliu...
- v1.17.9: github.com/cilium/ciliu...
- v1.16.16: github.com/cilium/ciliu...
Release 1.18.3 · cilium/cilium
Summary of Changes ℹ️ The images in this release were signed with cosign v3. Please use cosign v3 tooling to validate signatures with the following command syntax: cosign verify --certificate-githu...
github.com
October 24, 2025 at 3:22 PM
🐝 Release Announcement 🐝
Cilium v1.18.3, v1.17.9, and v1.16.16 have been released. Thank you to all the contributors!
See the release notes below for details 👇
- v1.18.3: github.com/cilium/ciliu...
- v1.17.9: github.com/cilium/ciliu...
- v1.16.16: github.com/cilium/ciliu...
Cilium v1.18.3, v1.17.9, and v1.16.16 have been released. Thank you to all the contributors!
See the release notes below for details 👇
- v1.18.3: github.com/cilium/ciliu...
- v1.17.9: github.com/cilium/ciliu...
- v1.16.16: github.com/cilium/ciliu...
Cybozu has been running #Cilium in production for four+ years, facilitating a seamless migration to #Kubernetes on 1,000+ bare metal servers and significantly improving network performance, scalability, and security.
Read more in our latest Cilium case study: www.cncf.io/case-studies...
Read more in our latest Cilium case study: www.cncf.io/case-studies...
Cybozu
Cybozu, a Japanese software company known for its customizable workplace platform Kintone, decided to modernize its infrastructure from traditional on-premises virtual machines to Kubernetes on bare…
www.cncf.io
October 24, 2025 at 3:01 PM
Cybozu has been running #Cilium in production for four+ years, facilitating a seamless migration to #Kubernetes on 1,000+ bare metal servers and significantly improving network performance, scalability, and security.
Read more in our latest Cilium case study: www.cncf.io/case-studies...
Read more in our latest Cilium case study: www.cncf.io/case-studies...
Join ESnet's Kapil Agrawal at #CiliumCon to hear how his team built an IPv6-first #Kubernetes environment using #Cilium for networking.
Expect lessons learned on routing, scaling, and simplifying operations from deploying without IPv4.
🔗 colocatedeventsna2025.sched.com/event/28D0g/...
Expect lessons learned on routing, scaling, and simplifying operations from deploying without IPv4.
🔗 colocatedeventsna2025.sched.com/event/28D0g/...
October 23, 2025 at 4:15 PM
Join ESnet's Kapil Agrawal at #CiliumCon to hear how his team built an IPv6-first #Kubernetes environment using #Cilium for networking.
Expect lessons learned on routing, scaling, and simplifying operations from deploying without IPv4.
🔗 colocatedeventsna2025.sched.com/event/28D0g/...
Expect lessons learned on routing, scaling, and simplifying operations from deploying without IPv4.
🔗 colocatedeventsna2025.sched.com/event/28D0g/...