# Kubernetes networking Kubernetes networking covers services, load balancing, ingress, network policies, DNS, dual-stack networking, and topology-aware routing for Kubernetes clusters. This is one page of public article previews, not the complete archive. Follow Next page to continue. Summaries are not the original full articles. ## What Is Cilium? DevFeed: [What Is Cilium?]() Original publisher: [Read original article]() Author: Christian Hernandez Published: 2026-07-23T07:01:00Z Content type: tutorial Language: en Sources: [Isovalent - The latest articles covering eBPF-based Networking, Observability, and Security]() Topics: [Cilium](), [eBPF](), [Kubernetes networking](), [observability](), [Security](), [Cloud]() Tags: [cilium](), [cloud-native](), [ebpf](), [infrastructure](), [kubernetes](), [kubernetes-networking](), [observability](), [security]() ### AI overview An introductory article explains Cilium and describes how it uses eBPF for Kubernetes networking, security, and observability in cloud-native infrastructure. ### Source excerpt Learn what Cilium is, how it uses eBPF to power Kubernetes networking, security, and observability, and why organizations choose it for modern cloud-native infrastructure. ## Inside Cilium CNI: solving mysterious Kubernetes pod setup timeouts DevFeed: [Inside Cilium CNI: solving mysterious Kubernetes pod setup timeouts]() Original publisher: [Read original article]() Author: Adyen Published: 2026-07-13T09:17:40Z Content type: article Language: en Sources: [Adyen Tech]() Topics: [Cilium](), [Kubernetes](), [Kubernetes networking](), [networking](), [eBPF](), [Latency](), [hdfs](), [Apache Spark](), [big-data](), [cpu]() Tags: [big-data](), [cilium](), [cni](), [cpu](), [data](), [devops](), [ebpf](), [hdfs](), [kubernetes](), [kubernetes-networking](), [latency](), [spark](), [speed](), [tracing]() ### AI overview An Adyen engineer investigates Cilium CNI timeouts that prevented new Kubernetes pods from starting. The article attributes the issue to sequential connection-tracking-table garbage collection, which became a bottleneck under workloads involving HDFS, Trino, and short-lived Spark jobs. ### Source excerpt By Jorrick Sleijster - Senior Data Platform Engineer, Adyen I was fully aware a year ago that a single configuration line could break the Kubernetes networking stack. But if they told me that leftovers from Kubernetes pods which terminated hours prior could block new ones from starting, I would have thought they were joking. In high-performance networking, 35 seconds is a lifetime. This was the latency required to iterate through our connection tracking table of 7 million entries at a maximum speed of 200,000 entries per second. At our 16-million-entry peak, this sequential lookup could take up to 80 seconds, leading to Cilium CNI timeouts preventing new pods from starting on affected nodes. We uncovered this linear-time behavior at Adyen by tracing syscalls, inspecting codebases, and analyzing eBPF internals. This investigation revealed how our varied workloads turned the connection tracking table's garbage collection algorithm into a critical bottleneck. Our setup: why we're different At Adyen, we run Cilium CNI across all our 100+ Kubernetes clusters. When we switched from Calico to Cilium, we knew we'd face challenges adapting it to our production workloads. Our production big data Kubernetes clusters have a unique usage pattern compared to the other Kubernetes environments within Adyen: Data extraction from HDFS. Our infrastructure relies on more than 500 datanodes. Trino represents one of our most demanding HDFS workloads, processing analytical queries against data stored on HDFS. Due to the distributed nature of HDFS, each file you download requires a new connection to any of these 500 nodes. Therefore, during peak hours, a single pod can produce approximately 50,000 connections every minute. Pod churn. Many pods we spawn on the Kubernetes cluster run batch jobs, such as Spark jobs. They stay around for anywhere from a second to a couple of hours. Wide variety of workloads. Some workloads are very CPU-intensive, like Spark pods executing complex joins and tra ## Ep. 4: Mastering Kubernetes Networking: Essential Insights for Efficient Deployment DevFeed: [Ep. 4: Mastering Kubernetes Networking: Essential Insights for Efficient Deployment]() Original publisher: [Read original article]() Published: 2024-06-03T00:00:00Z Content type: tutorial Language: en Sources: [William Kennedy]() Topics: [Kubernetes networking](), [Kubernetes](), [Deployment](), [Routing (disambiguation)](), [Go Language](), [configuration]() Tags: [clusters](), [configuration](), [deployment](), [discovery](), [go](), [kubernetes](), [kubernetes-clusters](), [kubernetes-networking](), [networking](), [routing](), [yaml]() ### AI overview This video tutorial explains how to configure networking in Kubernetes clusters for Go applications. It covers service definitions, internal and external traffic routing, namespaces, ports, DNS-based service discovery, and configuration patching with Kustomize. ### Source excerpt Introduction: In this detailed discussion, Bill delves into the critical aspects of networking within Kubernetes clusters, emphasizing the necessity of properly defining services to manage internal and external communication effectively. Learn the critical role of service definitions in Kubernetes for managing internal and external communication, ensuring your Go applications are accessible and networked correctly within the cluster. Gain insights into configuring Kubernetes environments to handle traffic routing and service discovery, which is essential for deploying scalable and maintainable Go applications. ## Kubernetes Networking with Multus DevFeed: [Kubernetes Networking with Multus]() Original publisher: [Read original article]() Author: Techno Tim Published: 2024-04-14T13:00:00Z Content type: tutorial Language: en Sources: [Techno Tim]() Topics: [Kubernetes networking](), [Kubernetes](), [networking](), [Cilium](), [k3s]() Tags: [cilium](), [homelab](), [k3s](), [kubernetes](), [kubernetes-networking](), [networking](), [video]() ### AI overview A video tutorial covering Kubernetes networking, from CNIs to configuring Multus for traditional networking needs. It includes installation guidance and connectivity and DNS testing steps, with notes for RKE2 and Cilium users. ### Source excerpt I just discovered Multus and it fixed Kubernetes networking! In this video we cover a lot of Kubernetes networking topics from beginner topics like CNIs, to advanced topics like adding Multus for more traditional networking within Kubernetes - which fixes a lot of problems you see with Kubernetes networking. Also, I had to turn the nerd up to 11 on this one. 📺 Watch Video Be sure to ch... ## Troubleshooting Kubernetes Networking Issues DevFeed: [Troubleshooting Kubernetes Networking Issues]() Original publisher: [Read original article]() Author: sasha@goteleport.com (Sasha Klizhentas) Published: 2022-04-26T00:00:00Z Content type: tutorial Language: en Sources: [Teleport]() Topics: [Kubernetes](), [Kubernetes networking](), [Kubernetes clusters](), [networking]() Tags: [bridge](), [firewall](), [ip](), [kernel](), [kubernetes](), [kubernetes-clusters](), [kubernetes-networking](), [modules](), [networking](), [troubleshooting](), [udp](), [vxlan]() ### AI overview Part 1 of a Kubernetes troubleshooting series focuses on networking failures, including traffic forwarding, bridge-netfilter settings, and firewall rules affecting overlay network traffic. It explains how these failures manifest and outlines ways to diagnose and fix them. ### Source excerpt Part 1 of our Troubleshooting Kubernetes series focuses on networking, listing common issues we have encountered along with easy ways to troubleshoot them. ## Teleport partners with Tigera DevFeed: [Teleport partners with Tigera]() Original publisher: [Read original article]() Author: taylor@goteleport.com (Taylor Wakefield) Published: 2017-01-03T00:00:00Z Content type: release Language: en Sources: [Teleport]() Topics: [Kubernetes](), [Kubernetes networking](), [private cloud](), [networking](), [Application Security](), [VXLAN]() Tags: [announce](), [cloud-infrastructure](), [cloud-native](), [hybrid-cloud](), [kubernetes](), [kubernetes-networking](), [networking](), [partners](), [security](), [tech-news](), [vxlan]() ### AI overview Teleport announces a partnership with Tigera to support Calico as a networking option for Private Kubernetes deployments on the Gravity platform. The integration adds Kubernetes Network Policy capabilities and networking choices including layer 3 routing, private-cloud peering, IP-in-IP, and VXLAN. ### Source excerpt Calico is now a standard option in all Gravity deployments.