This article explains how to integrate Ceph's erasure‑coded RBD pools with OpenStack, covering the design principles, storage pool layout, performance trade‑offs, and step‑by‑step configuration for Nova and Cinder to achieve higher storage utilization while maintaining high availability.
This comprehensive tutorial walks you through configuring VMware NAT networking, setting up Linux network interfaces, customizing yum repositories, installing OpenStack components on both single‑node and dual‑node (controller + compute) setups, and managing Keystone, Nova, and Neutron services with practical command examples.
This article compares VMware's costly virtualization suite with four open‑source alternatives—KVM, Proxmox VE, oVirt, and OpenStack—detailing each solution's core features, performance, management tools, and suitability for enterprise IT cost reduction.
This article explains what bare metal servers are, their key features such as exclusive hardware use, cloud‑style management, and zero virtualization overhead, compares them with traditional physical servers, outlines use cases like AI, big data, and HPC, and details the OpenStack Ironic and DPU‑based implementation by MaShang Cloud.
This tutorial walks through a complete OpenStack installation on VMware, covering single‑node and dual‑node configurations, network setup, yum repository preparation, Keystone and Nova service management, security groups, floating IPs, and Neutron networking, with full command‑line examples.
This comprehensive guide explains storage fundamentals (DAS, NAS, SAN), the limitations of single‑node storage, introduces distributed storage concepts, details Ceph’s architecture, advantages, data flow, version lifecycle, and provides step‑by‑step instructions for deploying a Ceph cluster with ceph‑deploy, including monitors, OSDs, managers, and the web dashboard.
This article explains the workflow of OpenStack's core components—including Keystone, Glance, Placement, Nova, and Neutron—detailing their roles, interactions, and key concepts such as users, tokens, projects, services, endpoints, and networking types, providing a comprehensive overview for cloud engineers.
This article details 360 Cloud Platform's practical implementation of GPU passthrough and Docker‑MIG solutions, covering the underlying principles, host and OpenStack configuration steps, verification methods, and future directions for full GPU virtualization.
OpenInfra’s decision to join the Linux Foundation marks a strategic shift that unites OpenStack and CNCF resources, promising shared governance, funding, and stronger support for AI‑driven, accelerated‑computing and digital‑sovereignty workloads in the cloud‑native ecosystem.
This article explains the challenges of centralized DHCP in 360’s OpenStack‑based virtual network, analyzes performance and reliability issues, and presents a distributed DHCP redesign that moves DHCP processing to the compute node, reducing latency, improving stability, and cutting operational costs.
Virtualization resource scheduling algorithms, especially in OpenStack, address fragmented CPU allocation and uneven node utilization by dynamically consolidating VMs, employing NUMA-aware placement, and using resource scoring to trigger migrations, ultimately improving utilization, reducing costs, and enhancing performance in cloud environments.
This article details the design, implementation, and results of migrating over 16,000 virtual machine disks from an aging Ceph Luminous cluster to a high‑performance mixed‑flash Ceph cluster using QEMU QMP hot‑swap, achieving a 47.65% reduction in IO latency and enabling cost‑saving decommissioning of legacy storage.
This article explains how 360’s cloud platform uses a three‑layer architecture and Nova‑scheduler to manage thousands of servers and tens of thousands of VMs across multiple OpenStack clusters, detailing scheduling policies, resource‑pool handling, current challenges, and future improvement plans.
This article explains the essential OpenStack components—Keystone for identity, Glance for image services, Nova for compute, Neutron for networking, Placement, and related services—detailing their roles, interactions, and workflow, helping readers grasp how each piece fits into a functional cloud environment.
This article provides an in‑depth comparison of Kubernetes and OpenStack, covering their core features, typical use cases, architectural differences, installation complexity, ecosystem support, and guidance on selecting the right platform for specific cloud computing needs.
This guide provides a concise collection of OpenStack Nova and Neutron command‑line examples for listing, creating, modifying, and deleting virtual machines, networks, subnets, and related resources, helping administrators efficiently manage cloud infrastructure.
This article introduces OpenStack as an open‑source cloud computing platform, outlines its ten core services such as Nova, Swift, and Keystone, highlights key characteristics like openness and modularity, and discusses typical public, private, and hybrid cloud deployment scenarios.
This article describes how 360 unified Kubernetes pod networking with OpenStack VPC by developing a custom CNI plugin that leverages Neutron elastic ports, IPVLAN L2 mode, and OVS to achieve layer‑2 connectivity between VMs and pods, including detailed implementation steps and command examples.
This article introduces OpenStack’s core components, outlines its strengths and weaknesses, and provides step‑by‑step code examples for achieving traffic mirroring and cross‑host forwarding using Kubernetes, Istio, and OpenStack networking plugins such as Neutron and Calico.
This article provides a comprehensive analysis of OpenStack Octavia’s LBaaS implementation, covering its core components such as Amphora, VIP management, network topology, listener and pool creation, health monitoring, SSL communication, and the automated failover process that ensures high‑availability load balancing for cloud environments.
This tutorial walks through the complete process of preparing three CentOS 7 nodes, installing ceph‑deploy, configuring storage and network topology, and sequentially deploying monitors, managers, OSDs, MDS, RGW, enabling the Ceph dashboard, performing verification tests, and finally uninstalling the cluster.
This guide walks through a full manual installation of OpenStack Rocky on a two‑node (controller + compute) environment, covering architecture diagrams, network design choices, core services configuration (DNS, NTP, MySQL, RabbitMQ, Memcached, Etcd), and detailed setup of Keystone, Glance, Nova, Neutron, Horizon and Cinder with all required commands, config files and verification steps.
This guide explains the performance limitations of Neutron OVS networking, introduces SR‑IOV as a high‑performance I/O virtualization solution, and provides step‑by‑step configuration for enabling SR‑IOV agents, mapping physical networks, creating VLAN and flat networks, handling NUMA affinity, security groups, and bonding, with detailed command examples and XML snippets.
This article provides a comprehensive overview of OpenStack and OpenNebula, detailing their purposes, architectures, core components, and key concepts, followed by a complete one‑click shell script that automates the installation and configuration of an OpenStack Pike environment on CentOS 7.
This article explains the complete OpenStack Neutron OVS networking stack, covering compute‑node, network‑node and control‑node models, dual‑node deployment, flow‑table design for flat, VLAN and VxLAN networks, L3 routing, external network integration and practical CLI examples.
This article provides a comprehensive guide to OpenStack Neutron, covering its VPC virtual network model, network resource types, isolation methods, configuration examples for flat, VLAN, and VxLAN networks, as well as detailed instructions for creating subnets, ports, routers, and floating IPs with code snippets.
From its early adoption in 2010 to becoming a catalyst for Chinese cloud innovation, OpenStack's evolution in China—highlighting the rise of local startups, venture funding, foundation dynamics, and the broader impact on the nation's cloud computing landscape—is examined in this comprehensive analysis.
This guide explains how to use Kube-OVN to connect OpenStack virtual machines and Kubernetes containers by configuring cluster interconnect or shared OVN modes, covering prerequisites, OVN‑IC database deployment, Kubernetes and OpenStack side settings, and example manifests for creating Pods in OpenStack subnets.
This article provides an in‑depth comparison of Apache CloudStack and OpenStack, covering their histories, architectures, feature matrices, deployment models, usability, and guidance on choosing the most suitable cloud management platform for enterprises of any size.
Facing Ceph’s high latency, jitter, and upgrade constraints, NetEase Cloud Music adopted Curve block storage, which delivers over twice the IOPS, sub‑2‑second upgrade pauses, and stable, low‑latency I/O across 40 GB‑4 TB volumes, enabling the platform to meet its 99.99% availability SLA for billions of users while supporting future cloud‑native services.
This article explains how to integrate OpenStack and Kubernetes by using Kube‑OVN to provide routing and network isolation between OpenStack VMs and Kubernetes Pods, comparing two implementation approaches and outlining their requirements, benefits, and drawbacks.
This article explores the landscape of open‑source cloud platforms and tools—such as AppScale, Kubernetes, and OpenStack—detailing their capabilities, cost advantages, and how they compare to proprietary services, while also covering monitoring, cost‑optimization, and infrastructure‑as‑code solutions for modern enterprises.
This article explores the range of open‑source cloud platforms and tools—such as AppScale, Kubernetes, OpenStack, and monitoring solutions—highlighting how they provide flexible, cost‑effective alternatives to proprietary public‑cloud services for modern IT strategies.
This article details the background, architecture, step‑by‑step troubleshooting, analysis of network and server queues, and the final configuration changes that resolved the intermittent slow response times of the Octavia load‑balancer API in an OpenStack environment.
This article introduces KubeVirt as a Kubernetes plugin for managing virtual machines, compares it with OpenStack and other solutions, explains its CRDs, components, storage and networking options, and provides detailed code examples and SDK usage for deploying and operating VMs in a cloud‑native environment.
This article provides a comprehensive guide to building private cloud infrastructures, covering core principles of stability, scalability and redundancy, storage options, network design, compute resource planning, operating‑system choices, security mechanisms, cloud‑ification techniques, and practical OpenStack deployment examples.
This guide explains how to design and implement a spine‑leaf network topology for Red Hat OpenStack environments, covering composable networking, routing, VLAN isolation, DHCP relay, supernet routes, and the specific requirements and limitations of deploying an overcloud.
This article explains the concept of bare metal services in cloud computing, details the deployment and runtime phases of 360Stack bare metal servers using OpenStack Ironic, and compares flat, VLAN, and VXLAN network modes with accompanying architecture diagrams and configuration steps.
This article explains the concept of bare metal services in cloud computing, details OpenStack Ironic's role, walks through the provisioning and running phases, and compares flat, VLAN, and VXLAN network modes for deploying bare metal servers.
This article explains the concept of Service Function Chain (SFC), its role in SDN and cloud‑native environments, and details how the OpenStack networking‑sfc project implements SFC through ports, port pairs, port chains, service graphs, and various deployment modes such as chain, tap, and load‑balancing.
This article explains Service Function Chaining (SFC), its role in SDN, the architecture defined by RFC 7665 and RFC 8300, and how OpenStack’s networking‑sfc project implements SFC through concepts such as port pairs, port pair groups, port chains, service graphs, and various forwarding modes.
This article provides a comprehensive, hands‑on tutorial for installing and configuring Ceph as the backend storage for OpenStack, covering network planning, host setup, password‑less SSH, repository configuration, ceph‑deploy commands, pool creation, and integration with Glance, Cinder, and Nova services.
This step‑by‑step guide shows how to install OpenStack client tools, modify and run the init‑runonce script, list required resources, create a virtual machine, log in, and assign a floating IP, providing all commands and screenshots needed for a successful deployment.
This article walks you through building an OpenStack Stein cloud on a single host using Kolla, covering environment preparation, Docker and Ansible setup, configuration files, password generation, deployment commands, and final login verification, all with detailed code snippets and images.
This article introduces PML, a meta‑model based access control policy language and its enforcement mechanism PML‑EM, which abstracts away cloud‑specific policy syntaxes, supports BLP, RBAC, ABAC, and demonstrates low performance and code overhead when implemented on OpenStack.
The article explains how Thanos combined with Prometheus provides a cloud‑native, highly available solution for long‑term metric storage and fast querying to address the exponential growth of monitoring data in large OpenStack and Ceph deployments.
This article explains how the Thanos and Prometheus combination provides long‑term, highly available monitoring for massive OpenStack and Ceph clusters, detailing its features, architecture, key components, practical deployment issues, and the operational problems it resolves.
The presentation at the 2019 Shanghai Open Source Infrastructure Summit introduced Kube-OVN, an open‑source CNI that ports mature OpenStack networking concepts to Kubernetes, outlining its design principles, architecture, current release status, and future roadmap.
This article provides a comprehensive, easy‑to‑understand overview of OpenStack, covering its origins from Amazon and NASA, the open‑source community, version naming, core components, rapid adoption, and practical advice on how and why developers and students should start learning this IaaS platform.
The author reflects on seven years of OpenStack, highlighting its declining community activity, lack of profitability, ineffective technical committee, poor enterprise value, competition from Kubernetes and PaaS, and argues that technical quality alone cannot reverse its downward trajectory.
This article explains OpenStack Trove’s role as a Database-as-a-Service platform, outlines its core components, and details QiYun’s custom enhancements—including automated backup, monitoring, and a streamlined single-API master-slave instance creation with isolated networks and VIP-based failover for improved security and availability.
This article provides a comprehensive overview of OpenStack, covering its history from early Amazon web services to its open‑source launch, the governance of the OpenStack Foundation, the evolution of its releases, core components, widespread adoption, and practical guidance for learning the platform.
The article introduces Cable, a new virtual network architecture that unifies management of physical, virtual, and container networks across OpenStack and Kubernetes, detailing its design, key components such as a virtual data plane and self‑developed control plane, compatibility with existing OpenStack APIs, and future development plans.
This article provides a comprehensive overview of cloud computing, tracing its evolution from physical servers through virtualization and IaaS/PaaS models to modern container and cloud‑native architectures, and explains key concepts, major vendors, and the challenges of automation and resource pooling.
The 2018 OpenStack User Survey, based on 1,483 responses from 858 projects across 63 countries, uncovers how OpenStack is expanding beyond IT, the rise of Kubernetes and bare‑metal services, multi‑cloud adoption patterns, and the top software and hardware vendors shaping the global cloud market.
This article traces OpenStack’s rise, decline, and recent resurgence, describing how the foundation refocused on core services, launched pilot projects in CI/CD, containers, edge computing, and AI, and positioned the platform as a mature, widely‑adopted private‑cloud solution.
The OpenStack Cyborg project provides a generic framework that lets cloud platforms discover, schedule, and control proprietary accelerators such as GPUs, FPGAs, ASICs and SoCs, solving resource waste in AI, NFV, edge and HPC workloads.
The article provides an in‑depth technical overview of OpenStack Magnum, covering its community contributions, architecture, Nova and Heat Docker drivers, core concepts such as Bay and Baymodel, supported back‑ends like Kubernetes and Swarm, and the workflow for provisioning container clusters.
OpenStack can be integrated with Kubernetes either by deploying K8s on top of OpenStack—leveraging Magnum for rapid VM‑based clusters—or by tightly coupling K8s with OpenStack services such as Keystone, Neutron, Cinder, and Manila, each offering distinct benefits and trade‑offs.
This article explains OpenStack's Ceilometer service, detailing its role in metering, monitoring, and alarming, describing its main components, deployment considerations, and the two data‑collection approaches (Push and Poll) along with the processing pipeline that stores metrics in MongoDB.
The article examines Docker’s origins and container technology, contrasts its performance and use cases with OpenStack and KVM, clarifies common misconceptions, and concludes that OpenStack, KVM, and Docker are complementary tools rather than mutually exclusive solutions.
This article examines OpenStack’s evolution over the past eight years, analyzes its current positioning against VMware and AWS, discusses the challenges of its “big tent” model and core services, and speculates on possible future paths for the platform from a user’s viewpoint.
This article explains how OpenStack Ironic enables bare‑metal provisioning as a cloud service, outlines scenarios where physical servers outperform virtual machines, details Ironic’s architecture and evolution, compares billing models, and highlights future trends for bare‑metal cloud offerings.
iQiyi improved OpenStack Swift’s video‑streaming performance by redesigning its storage engine to merge numerous tiny objects into larger files, replacing Swift’s per‑object directory structure with RocksDB‑managed metadata, eliminating file‑ID overhead, using prefix scans for fast listings, and adding lazy deletion, achieving dramatic speedups with only about 3,000 lines of new code.
This article explains the principles, architecture, and configuration of Keepalived and Linux Virtual Server (LVS) to create high‑availability load‑balancing solutions for OpenStack, covering modules, routing methods, VRRP, load‑balancing algorithms, and practical configuration examples.
This tutorial walks you through creating a virtual network, defining a tiny m1.nano flavor, generating key pairs, configuring security groups, launching an OpenStack instance, accessing it via a virtual console, and installing and configuring the OpenStack Horizon dashboard, complete with command examples and screenshots.
This guide walks you through installing and configuring OpenStack Compute (Nova) and Networking (Neutron) services on controller and compute nodes, covering database creation, service and endpoint registration, configuration file adjustments, package installation, and verification steps to achieve a functional IaaS cloud.
This tutorial walks through the complete installation and configuration of OpenStack's identity (Keystone) and image (Glance) services, covering database setup, service and endpoint creation, Apache integration, token management, client environment scripts, and verification steps, with detailed command examples and configuration snippets.
This article provides a comprehensive overview of OpenStack's architecture, details each core service with its role, and walks through step‑by‑step commands to configure a functional OpenStack Pike environment on CentOS, including networking, database, messaging, and storage components.
The article examines OpenStack’s open‑source advantages—free licensing, broad compatibility, and extensibility—while also highlighting its drawbacks such as limited monitoring, billing, DNS, and storage features, vendor conflicts, high integration costs, frequent releases, and security concerns like authentication, password handling, token management, and data encryption.
This article explains OpenStack's Keystone service, describing how token‑based authentication enables unified identity, authorization, and accounting across Nova, Glance, and Neutron components, and compares the approach with public‑cloud AK/SK mechanisms.
This article provides a comprehensive, beginner‑friendly overview of OpenStack, covering its history, version‑naming scheme, core components, community governance, reasons for its popularity, industry adoption, and practical advice on how to start learning the open‑source cloud platform.
This tutorial walks you through downloading an Ubuntu 14.04 cloud image, converting it with Glance, configuring OpenStack credentials, creating a key pair, launching a VM from the image via the dashboard, and accessing the instance securely using SSH.
The article explains how data‑control separation architecture is used across traditional and distributed file systems, high‑performance SAN designs, software‑defined storage solutions, and cloud platforms like OpenStack, highlighting its impact on performance, scalability, and resource contention.
This article details the evolution of 360 Qiyun's VPC solution, describing the two‑stage migration from a customized OpenStack Neutron Liberty deployment to a hardware‑assisted EVPN + VXLAN architecture, the specific network enhancements made, performance problems encountered, and the operational benefits achieved.
This article investigates why virtual machines on an OpenStack IaaS platform experience OOM‑killer terminations despite reserved host memory, analyzes memory usage patterns of qemu‑kvm processes, and proposes practical solutions to mitigate unexpected OOM events.
The Guangzhou City Information Research Institute built a nationwide leading smart‑city spatiotemporal information cloud platform on Huawei FusionSphere OpenStack, detailing its architecture, data handling, service layers, and the concrete benefits it brings to urban governance and development.
In this interview, JD.com’s infrastructure director Bao Yongcheng discusses his work on large‑scale container platforms, kernel‑level scheduling improvements, power‑saving experiments, and the future of cloud‑native data centers, highlighting practical lessons from the 11.11 shopping festival preparation.
This article walks through diagnosing a packet‑drop issue in OpenStack Neutron security groups, detailing network architecture, packet capture, iptables chain analysis, rule addition, and validation steps to restore communication between Linux Director and virtual machines.
An in‑depth review of the OpenStack Pike release highlights its new features across core services and presents detailed statistics on Chinese enterprises’ code contributions, showing top contributors per component and the overall growth of China’s participation in the OpenStack community.
This article explains the relationship between Software‑Defined Networking (SDN) and cloud platforms, detailing cloud service models, OpenStack core services, OpenDaylight controller architecture, and the integration mechanisms that enable unified management of network, compute, and storage resources.
The article provides a comprehensive overview of Ceph, covering its object storage concepts, architecture, core technologies, performance testing results versus Swift, and concludes with a summary of findings and future outlook for this distributed storage solution.
This article explains how to design and implement dual‑active storage solutions combined with virtualization and application clustering, covering industry requirements, storage vendor options, physical and virtual deployment models, and the role of cloud storage and OpenStack Ironic.
This article details the evolution, architecture, deployment, monitoring, and performance optimization of Ultron—360’s internal OpenStack‑based virtualization platform—covering its three development stages, technical stack, automation with Ansible, advanced features like VXLAN and Ceph, and lessons learned from large‑scale operations.
Karbor is an OpenStack project that delivers Data Protection as a Service by defining standard interfaces, modular plugins, and workflow APIs to protect virtual machines, volumes, networks, and other cloud resources across heterogeneous vendor solutions.
This article explains the fundamental principles, security considerations, and cloud‑native design of private cloud infrastructure, covering stability, scalability, redundancy, storage options, network architecture, authentication, encryption, resource pooling, SLA management, and example OpenStack designs to guide practical implementation.
The Global Cloud Computing Open Source Conference in Beijing showcased Huawei’s leadership with talks on joint innovation for digital transformation, the evolution of OpenSDS, Golang‑based DevOps orchestration, and SDN solutions in OpenStack, while previewing upcoming sessions on cloud‑driven development and open‑source community governance.
This article introduces OpenStack, outlines its core components, describes NetEase’s private cloud architecture and services, and shares detailed deployment strategies, configuration settings, performance optimizations, and operational lessons learned from years of production use.
This article explains why traditional "classic" cloud networking lacks proper layer‑2 isolation, compares flat, VLAN, and overlay designs in OpenStack Neutron, and shows how virtual private clouds (VPCs) offer secure, scalable network segmentation for modern multi‑tenant environments.
This article explains how OpenStack Nova's plugin mechanism works, introduces the stevedore library, and provides step‑by‑step instructions for declaring, implementing, loading, and testing custom API extensions using Python packaging tools.
This article details Hengfeng Bank's practical experience with OpenStack, covering why the bank chose the open‑source cloud platform, its multi‑site deployment architecture, high‑availability design, management practices, and lessons learned from operating a large‑scale financial cloud environment.
This article details the HULK team's experience upgrading their private‑cloud OpenStack environment from Kilo to Mitaka, covering background, risk‑benefit analysis, preparation, step‑by‑step procedures, common pitfalls, and practical solutions, offering actionable guidance for similar OpenStack migrations.
Hengfeng Bank successfully migrated over 150 core banking applications to an OpenStack‑based financial cloud, combining high‑availability designs with internet‑style simplicity, and introduced innovative TAPaaS and SDPM solutions to ensure multi‑tenant performance monitoring and regulatory compliance.
This article examines the evolution of cloud computing, compares public and private cloud models, highlights the strengths and shortcomings of major providers such as AWS, Azure, and Alibaba Cloud, and explores how OpenStack can address enterprise needs while outlining future software‑defined trends.
This article walks you through the entire process of reporting OpenStack bugs and submitting patches, covering both known and unknown issues, required preparations, SSH key setup, Gerrit configuration, git‑review usage, common pitfalls, and final review steps.
This talk explores how OpenStack Swift object storage can be optimized on SSDs, examines why object storage is gaining popularity, outlines operational concerns, discusses performance testing, SSD placement strategies, and erasure coding benefits, providing practical insights for cloud storage engineers.
This article chronicles JD.com's journey from early OpenStack experiments in 2013 to the development, large‑scale deployment, and evolution of its first‑generation container engine (JDOS), highlighting architectural choices, performance challenges, operational practices, and the open‑source projects that emerged from the experience.
This guide walks through launching a CirrOS instance on OpenStack, retrieving images and networks, using the nova boot command, testing connectivity, and setting up a floating IP with security adjustments so external hosts can reach the VM.
This guide walks through configuring kernel network parameters, installing required packages, setting up Keystone authentication, enabling the ML2 plugin, configuring Open vSwitch, linking Compute with Neutron, creating external and tenant networks, and deploying the OpenStack dashboard on an Icehouse cloud.
This article provides a comprehensive, command‑by‑command tutorial for installing and configuring the OpenStack Neutron networking service on the controller, network, and compute nodes, covering package installation, database setup, Keystone integration, ML2 plugin configuration, and service startup.
