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...
🐝 eCHO News 96 🐝
eBPF for L7 Load Balancing at Alibaba
Cilium on Open Source Friday
cs.co/echo-news-96
eBPF for L7 Load Balancing at Alibaba
Cilium on Open Source Friday
cs.co/echo-news-96
December 4, 2025 at 3:28 PM
🐝 eCHO News 96 🐝
eBPF for L7 Load Balancing at Alibaba
Cilium on Open Source Friday
cs.co/echo-news-96
eBPF for L7 Load Balancing at Alibaba
Cilium on Open Source Friday
cs.co/echo-news-96
Cilium v1.19.0-pre.3 has been released 🐝
A big thank you to all of the contributors, and tho those who have tested the previous pre-releases!
Learn more: github.com/cilium/ciliu...
Docs are available if you want to pull this version and try it out: docs.cilium.io/en/v1.19.0-p...
A big thank you to all of the contributors, and tho those who have tested the previous pre-releases!
Learn more: github.com/cilium/ciliu...
Docs are 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.3 · cilium/cilium
Summary of Changes Major Changes: ztunnel: add xds control-plane (#42169, @rgo3) ztunnel: add ztunnel daemonset controller (#42766, @ldelossa) Minor Changes: Add iptables rule to allow tunnel tr...
github.com
December 3, 2025 at 12:03 PM
Cilium v1.19.0-pre.3 has been released 🐝
A big thank you to all of the contributors, and tho those who have tested the previous pre-releases!
Learn more: github.com/cilium/ciliu...
Docs are available if you want to pull this version and try it out: docs.cilium.io/en/v1.19.0-p...
A big thank you to all of the contributors, and tho those who have tested the previous pre-releases!
Learn more: github.com/cilium/ciliu...
Docs are available if you want to pull this version and try it out: docs.cilium.io/en/v1.19.0-p...
“The power of Hubble is a godsend. If there’s one tool I use day in and day out, that’s Hubble.”
Learn how Hubble, #Cilium’s observability platform, became a critical tool for network debugging within ESNet,
Read more: www.cncf.io/case-studies...
Learn how Hubble, #Cilium’s observability platform, became a critical tool for network debugging within ESNet,
Read more: www.cncf.io/case-studies...
December 2, 2025 at 3:35 PM
“The power of Hubble is a godsend. If there’s one tool I use day in and day out, that’s Hubble.”
Learn how Hubble, #Cilium’s observability platform, became a critical tool for network debugging within ESNet,
Read more: www.cncf.io/case-studies...
Learn how Hubble, #Cilium’s observability platform, became a critical tool for network debugging within ESNet,
Read more: www.cncf.io/case-studies...
“When we first deployed #Cilium we were running only a few types of services on #Kubernetes clusters but now...we can move the rest of our services off of our old VM-based cloud. Cilium helped make this move possible.”
Read more about how Cybozu is using Cilium:
www.cncf.io/case-studies...
Read more about how Cybozu is using Cilium:
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
November 26, 2025 at 1:54 PM
“When we first deployed #Cilium we were running only a few types of services on #Kubernetes clusters but now...we can move the rest of our services off of our old VM-based cloud. Cilium helped make this move possible.”
Read more about how Cybozu is using Cilium:
www.cncf.io/case-studies...
Read more about how Cybozu is using Cilium:
www.cncf.io/case-studies...
Only a few days left to submit for the #eBPF Summit 2025 #Hackathon! 🐝 💻
Submissions close this Sunday, November 30.
Register on Devpost: lnkd.in/eh4rRaa2
Learn more about what & how to submit: lnkd.in/eBR-n5gD
Questions? Join the ebpf-summit channel in Cilium & eBPF Slack: lnkd.in/eUhYfTHS
Submissions close this Sunday, November 30.
Register on Devpost: lnkd.in/eh4rRaa2
Learn more about what & how to submit: lnkd.in/eBR-n5gD
Questions? Join the ebpf-summit channel in Cilium & eBPF Slack: lnkd.in/eUhYfTHS
November 26, 2025 at 1:47 PM
Only a few days left to submit for the #eBPF Summit 2025 #Hackathon! 🐝 💻
Submissions close this Sunday, November 30.
Register on Devpost: lnkd.in/eh4rRaa2
Learn more about what & how to submit: lnkd.in/eBR-n5gD
Questions? Join the ebpf-summit channel in Cilium & eBPF Slack: lnkd.in/eUhYfTHS
Submissions close this Sunday, November 30.
Register on Devpost: lnkd.in/eh4rRaa2
Learn more about what & how to submit: lnkd.in/eBR-n5gD
Questions? Join the ebpf-summit channel in Cilium & eBPF Slack: lnkd.in/eUhYfTHS
The recordings from #CiliumCon North America 2025 are live!
If you couldn't attend or want to catch a detail you missed, the full playlist is here ➡️ www.youtube.com/watch?v=4Y8f...
#KubeCon #Cilium #CloudNative
If you couldn't attend or want to catch a detail you missed, the full playlist is here ➡️ www.youtube.com/watch?v=4Y8f...
#KubeCon #Cilium #CloudNative
CiliumCon | Welcome + Opening Remarks - Bill Mulligan & Hemanth Malla, Program Committee Co-Chairs
Don't miss out! Join us at our next Flagship Conference: KubeCon + CloudNativeCon events in Amsterdam, The Netherlands (23-26 March, 2026). Connect with our current graduated, incubating, and sandbox…
www.youtube.com
November 25, 2025 at 1:48 PM
The recordings from #CiliumCon North America 2025 are live!
If you couldn't attend or want to catch a detail you missed, the full playlist is here ➡️ www.youtube.com/watch?v=4Y8f...
#KubeCon #Cilium #CloudNative
If you couldn't attend or want to catch a detail you missed, the full playlist is here ➡️ www.youtube.com/watch?v=4Y8f...
#KubeCon #Cilium #CloudNative
Reposted by Cilium
Today on Open Source Friday, we’re spotlighting @cilium.io!
Powered by eBPF, it brings modern networking, security, and observability to your cloud-native environments. 🐝
Set a reminder for when we go live. 🔔
https://gh.io/cilium
Powered by eBPF, it brings modern networking, security, and observability to your cloud-native environments. 🐝
Set a reminder for when we go live. 🔔
https://gh.io/cilium
November 21, 2025 at 3:55 PM
Today on Open Source Friday, we’re spotlighting @cilium.io!
Powered by eBPF, it brings modern networking, security, and observability to your cloud-native environments. 🐝
Set a reminder for when we go live. 🔔
https://gh.io/cilium
Powered by eBPF, it brings modern networking, security, and observability to your cloud-native environments. 🐝
Set a reminder for when we go live. 🔔
https://gh.io/cilium
November 19, 2025 at 8:17 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_...
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...