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Container Networking

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Linux Ops Smart Journey
Linux Ops Smart Journey
Apr 22, 2025 · Cloud Native

Mastering Calicoctl: Install and Manage Kubernetes Network Policies from Scratch

This guide walks through installing calicoctl, a Calico command‑line tool for managing Kubernetes network policies, covering prerequisites, manifest deployment for both Kubernetes‑ and etcd‑backed data stores, verification commands, and practical tips for a smooth setup.

CalicoContainer NetworkingKubernetes
0 likes · 8 min read
Mastering Calicoctl: Install and Manage Kubernetes Network Policies from Scratch
Cloud Native Technology Community
Cloud Native Technology Community
Sep 4, 2024 · Cloud Native

Debugging Kubernetes Container Networks with nsenter and Temporary Pods

This article explains how to use the nsenter tool to enter a container's network namespace for packet capture and other host‑level debugging, provides scripts for logging into Kubernetes nodes, shows a DaemonSet deployment for persistent access, and compares nsenter with the newer kubectl debug temporary container approach.

Container NetworkingDaemonSetKubernetes
0 likes · 5 min read
Debugging Kubernetes Container Networks with nsenter and Temporary Pods
360 Zhihui Cloud Developer
360 Zhihui Cloud Developer
Aug 16, 2024 · Cloud Native

How We Built a Scalable Container VPC Network with ipvlan and Custom IPAM

This article details the design, implementation, and production rollout of a container VPC solution that leverages ipvlan for CNI, a custom IPAM integration with OpenStack/Ultron, and extensive operational fixes to achieve reliable, high‑performance networking for Kubernetes workloads across multiple clusters.

CNIContainer NetworkingIPAM
0 likes · 15 min read
How We Built a Scalable Container VPC Network with ipvlan and Custom IPAM
vivo Internet Technology
vivo Internet Technology
Dec 13, 2023 · Artificial Intelligence

Practice of Multi-NIC Container Network Acceleration for Offline Training

The talk explains how Vivo leverages a Kubernetes‑based solution that combines Calico and RoCEv2 to migrate offline training workloads from single‑NIC to multi‑NIC, integrating loss‑less RDMA, planning topology and IP allocation, and employing Volcano, SpiderPool, Macvlan, and Multus CNI for efficient container networking.

Container NetworkingKubernetesMulti-NIC
0 likes · 4 min read
Practice of Multi-NIC Container Network Acceleration for Offline Training
Top Architect
Top Architect
Feb 21, 2023 · Cloud Native

Docker Container Networking and Network Modes Explained

This article provides a comprehensive guide to Docker container networking, covering the default networks, the four network modes (bridge, container, host, none), Linux network namespaces, veth pair creation, and practical container operations such as hostname configuration, DNS settings, port mapping, and custom bridge setup.

BridgeContainer NetworkingDocker
0 likes · 27 min read
Docker Container Networking and Network Modes Explained
Architect's Guide
Architect's Guide
Feb 20, 2023 · Cloud Native

Docker Container Networking and Network Modes Explained

This article provides a comprehensive guide to Docker container networking, covering the default networks, the four network modes (bridge, host, none, container), virtual Ethernet pairs, Linux network namespaces, and practical configuration examples such as port mapping and custom bridge creation.

BridgeContainer NetworkingDocker
0 likes · 26 min read
Docker Container Networking and Network Modes Explained
Selected Java Interview Questions
Selected Java Interview Questions
Dec 22, 2022 · Cloud Native

Docker Container Networking: Modes, Configuration, and Network Namespace Management

This article provides a comprehensive guide to Docker container networking, covering the default network drivers, the four Docker network modes (bridge, container, host, none), Linux network namespace commands, veth pair creation, inter‑namespace communication, and practical configuration examples such as port mapping, custom bridges, and DNS settings.

Bridge ModeContainer NetworkingDocker
0 likes · 26 min read
Docker Container Networking: Modes, Configuration, and Network Namespace Management
Efficient Ops
Efficient Ops
Dec 6, 2022 · Cloud Native

Master Single-Host Container Networking with Linux Namespaces, veth, and Bridges

This article explains how to virtualize network resources on a single Linux host using network namespaces, virtual Ethernet (veth) pairs, bridges, IP routing, NAT, and iptables, enabling containers to communicate with each other, the host, and the external world without writing custom code.

BridgeContainer NetworkingLinux Namespaces
0 likes · 27 min read
Master Single-Host Container Networking with Linux Namespaces, veth, and Bridges
Architect
Architect
Nov 17, 2022 · Cloud Native

Docker Container Network Modes and Configuration Guide

This article explains Docker's default networks, the four network modes (bridge, host, none, container), how to configure each mode, create custom bridges, use veth pairs, and perform common container networking operations such as port mapping and DNS settings.

Container NetworkingDockerNetwork Modes
0 likes · 27 min read
Docker Container Network Modes and Configuration Guide
ByteDance SYS Tech
ByteDance SYS Tech
Nov 1, 2022 · Operations

How eBPF Can Cut Container Network Latency by Up to 82%

Using eBPF to bypass traditional bridge, netfilter, and routing steps, this article demonstrates how container network packet forwarding can be accelerated, reducing receive and transmit latency by around 40‑82%, with detailed perf‑ftrace analysis, code examples, and performance comparisons of three forwarding modes.

Container NetworkingLinux KerneleBPF
0 likes · 14 min read
How eBPF Can Cut Container Network Latency by Up to 82%
Cloud Native Technology Community
Cloud Native Technology Community
May 31, 2022 · Cloud Native

Building High‑Performance, High‑Availability Container Networks for Banking in a Two‑Site‑Three‑Center Architecture

This article explains the challenges of container networking in banks, especially under a two‑site‑three‑center architecture, and provides practical guidance on using underlay and overlay approaches, Kube‑OVN solutions, and best‑practice recommendations to achieve high‑availability, high‑concurrency, and high‑performance cloud‑native networks.

Container NetworkingHigh AvailabilityKube-OVN
0 likes · 9 min read
Building High‑Performance, High‑Availability Container Networks for Banking in a Two‑Site‑Three‑Center Architecture
Efficient Ops
Efficient Ops
Apr 18, 2022 · Cloud Native

How Kubernetes Enables Seamless Container Networking: From Docker0 to CNI

This article explains how Kubernetes ensures container-to-container communication using network namespaces, veth pairs, bridges like docker0, and advanced CNI plugins such as Flannel and Calico, detailing their underlying Linux networking components, routing mechanisms, and deployment considerations for both intra‑host and inter‑host scenarios.

BGPCNICalico
0 likes · 19 min read
How Kubernetes Enables Seamless Container Networking: From Docker0 to CNI
Efficient Ops
Efficient Ops
Feb 27, 2022 · Cloud Native

Master Single-Host Container Networking with Linux Namespaces, veth, and Bridges

Learn how to virtualize network resources on a single Linux host using network namespaces, virtual Ethernet devices, bridges, and NAT, enabling isolated containers to communicate with each other, the host, and the external internet without complex code, while covering setup, routing, and port publishing.

BridgeContainer NetworkingLinux Namespaces
0 likes · 28 min read
Master Single-Host Container Networking with Linux Namespaces, veth, and Bridges
Cloud Native Technology Community
Cloud Native Technology Community
Jan 20, 2022 · Cloud Native

Understanding Single‑Host Container Networking with Linux Namespaces, veth, Bridges and iptables

This tutorial explains how to isolate, virtualize and connect container network stacks on a single Linux host using network namespaces, virtual Ethernet pairs, a Linux bridge, routing, NAT and iptables rules, and shows how to expose container services to the external world.

BridgeContainer NetworkingLinux Namespaces
0 likes · 28 min read
Understanding Single‑Host Container Networking with Linux Namespaces, veth, Bridges and iptables
Efficient Ops
Efficient Ops
Jan 17, 2022 · Cloud Native

How Do Containers Communicate in Kubernetes? A Deep Dive into CNI and Network Namespaces

This article explains the fundamentals of container networking in Kubernetes, covering network namespaces, veth pairs, bridges, CNI plugins such as Flannel and Calico, their routing modes, and practical command‑line examples that illustrate intra‑host and cross‑host communication.

CNICalicoContainer Networking
0 likes · 20 min read
How Do Containers Communicate in Kubernetes? A Deep Dive into CNI and Network Namespaces
Refining Core Development Skills
Refining Core Development Skills
Jan 13, 2022 · Cloud Native

Understanding Linux Routing for Container and Cloud‑Native Networking

This article explains the fundamentals of Linux routing, why routing is required for containers and overlay networks, how the kernel selects routes when sending and receiving packets, and provides practical commands and code examples for configuring and testing routing tables in cloud‑native environments.

Container NetworkingIP ForwardingLinux
0 likes · 13 min read
Understanding Linux Routing for Container and Cloud‑Native Networking
Cloud Native Technology Community
Cloud Native Technology Community
Sep 16, 2021 · Cloud Native

Kube-OVN Survey Report: Container Network Usage and Kube-OVN Adoption Trends (Second Edition)

The second‑edition Kube‑OVN survey collected 267 valid responses from diverse industries, revealing increased container deployment on virtual machines, a rise in public‑cloud usage, a jump in Kube‑OVN adoption to 40%, growing demand for IPv6/dual‑stack and multi‑tenant networking, and user expectations centered on KubeVirt, VPC enhancements, and eBPF integration.

CNIContainer NetworkingKube-OVN
0 likes · 6 min read
Kube-OVN Survey Report: Container Network Usage and Kube-OVN Adoption Trends (Second Edition)
Refining Core Development Skills
Refining Core Development Skills
Sep 16, 2021 · Cloud Native

Deep Dive into Linux veth Pairs: Usage, Kernel Implementation, and Network Communication

This article provides a comprehensive technical analysis of Linux virtual Ethernet (veth) pairs, detailing their practical configuration, underlying kernel creation mechanisms, and complete network communication workflow within containerized environments like Docker.

Container NetworkingDockerLinux networking
0 likes · 12 min read
Deep Dive into Linux veth Pairs: Usage, Kernel Implementation, and Network Communication
Efficient Ops
Efficient Ops
Aug 24, 2021 · Cloud Native

How Kubernetes Enables Container Networking: From Docker Bridge to CNI Plugins

This article explains Kubernetes container networking fundamentals, the role of Linux network namespaces, veth pairs, bridges, and iptables, and compares same‑host communication via docker0 with cross‑host solutions like CNI plugins (flannel, Calico) and their routing modes.

CNICalicoContainer Networking
0 likes · 19 min read
How Kubernetes Enables Container Networking: From Docker Bridge to CNI Plugins