1 views collected around this technical thread.
This guide walks through installing Docker on Debian hosts, creating a Docker Swarm manager and worker nodes, configuring overlay and bridge networks, deploying Portainer for visual management in both single‑node and swarm modes, launching container services, scaling them, and implementing load‑balanced Nginx services.
This guide explains Docker networking fundamentals, compares bridge, host, none, and overlay networks, shows how to create and manage custom networks, connect containers, expose services, and troubleshoot common issues, providing practical commands and optimization tips for reliable container communication.
This article explains the network interruption issues of VM live migration in 360's VPC overlay (V1), analyzes the root causes, and presents a V2 redesign that eliminates downtime through pre‑loaded forwarding policies, traffic redirection, and streamlined component collaboration.
This article reviews a technical sharing session that explains the characteristics, advantages and drawbacks of Overlay and Underlay networking, discusses hybrid network challenges and Multus modes, and presents Kube‑OVN’s solution for seamless integration of both network types in Kubernetes environments.
The article compares VXLAN and MPLS, explaining their underlying virtualization concepts, cost and operational differences, and demonstrates why VXLAN is increasingly favored over MPLS for metro‑area and wide‑area network deployments due to lower hardware costs, simpler engineering, and flexible overlay capabilities.
The article explains how Kube‑OVN can create a flexible, efficient, and secure cross‑Kubernetes‑cluster network plane to meet user demands such as high availability, multi‑cloud separation, disaster‑recovery, and hybrid‑cloud compliance, and demonstrates its use with TiDB, MySQL, and WordPress workloads.
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.
This guide explains how Flannel works as a Kubernetes CNI overlay network, detailing its VXLAN mode, the roles of cni0, flannel.1 and flanneld, routing and FDB handling, and provides command‑line examples to trace pod‑to‑pod traffic across nodes.
This article explains the concept of overlay networks, their implementation with VxLAN, how they enable virtual machine migration, reduce MAC address pressure, and provide large‑scale network isolation in cloud environments, while detailing packet processing steps and design trade‑offs.
This article explains Cisco's VXLAN flood‑and‑learn spine‑and‑leaf architecture, covering its standards compliance, encapsulation format, underlay and overlay network design, multicast and ingress replication, host discovery, routing, and multi‑tenant support for both Layer 2 and Layer 3 environments.
This article explains how UCloud’s internal VIP solution provides second‑level failover for high‑availability services in cloud overlay networks, detailing traditional approaches, the evolution of broadcast mechanisms, and real‑world use cases such as e‑commerce payment systems and database services.
iQIYI’s SD‑WAN‑based Network Acceleration Platform builds an overlay over the existing underlay, separating business control, routing, and data‑forwarding layers to provide automated, policy‑driven acceleration for physical hosts, virtual machines and other services, while offering flexible inter‑node routing, unified management, and fault‑tolerant, QoS‑aware path selection.
This article explains Rancher's use of the CNI specification to build IPsec and VXLAN overlay networks, details the evolution of container networking models, and describes how to configure a flat network using custom bridges and ebtables rules for seamless container communication.
The presentation reviews Alibaba's ongoing transition to a large‑scale, SDN‑driven data‑center network using OpenFlow hybrid switches, VXLAN overlay, automated deployment, and discusses the challenges, solutions, and future directions for network elasticity, hybrid cloud integration, and standardization.