Chapter 4–Git Workflows Separate Your Repositories Separate Development in Directories, Not Branches Trunk-Based Development Policies and Security Summary 25 Chapter 5–Repository gaps in application development processes. Although the DevOps movement officially started around 2007, I believe its true birth can be traced back to February 2001, when the Agile Manifesto [1.3] was was published. In many ways, the Agile Manifesto is the grandfather of DevOps. Agile development practices were a big step toward improving the application development process for the end user and for

associated infrastructure and applications through automation. GitOps is a natural evolution of Agile and DevOps methodologies What is GitOps? 3 Why GitOps? It takes weeks (or months!) to provision base │ ├── deployment.yaml │ ├── kustomization.yaml │ └── service.yaml └── overlays ├── development │ ├── kustomization.yaml │ └── replicas.yaml ├── production │ ├── kustomization no support for dynamic scripting/variables What's next in OpenShift Q3CY2020 Cloud Native Development OPENSHIFT PIPELINES Near Term (3-6 months) Mid Term (6-9 months) Long Term (9+ months) ECOSYSTEM

Automation 3. Code Review & Approve 4. Multi environment 5. CI/CD 6. Use Repository 7. Agile & Iteration DevOps 1. IaC 讓⼀切都成為 Code 2. Automation 盡可能⾃動化 如果不成，就紀錄它！ 3. Code Review & Approve 4. Multi environment 運⽤在所有的環境！ 5. CI/CD ⾃動化的唯⼀觸發點！ 6. Use Repository 分⽀策略、Flow、Workflow 7. Agile & Iteration ⼩粒度、多迭代 Tools VCS CI CD Container Registry CM IaC Container orchestration

TCE;  公有云方面，国内公有云支持阿里云、腾讯云、华为云，国外公有云支持 AWS、 Azure;  私有基础架构方面,  负载均衡方面，支持 F5。  SDN 方面，支持华为 Agile Controller, VMware NSX-T, 华三 SDN。  物理机方面, 支持  DELL：R720，R730，R930  HP：DL 380 Gen8，DL 580 Gen8

是一种统一纳管虚拟化平台、私有云、公有云，整合对外提供在线运行环 境服务及全生命周期管理的平台。 F5 主流的硬件负载均衡产品，一直以来市场占有率非常高，直到 2021 年 3 月才被深信服超越。 华为 Agile Controller 华为硬件 SDN 产品 容器云 指 k8s 容器云管理平台 常见的容器云管理平台有 OpenShift、Rancher、时速云、灵雀云等。 杭州飞致云信息科技有限公司

building DX teams to work with platform teams to improve overall organisational productivity and development velocity.” James Governor, — Source Redmonk.com Executive summary Adopting the platform approach they would go about building and maintaining the platform. Further, how they would build a new development culture around the platform that makes software delivery seamless. In this paper, we look at are essentially application development teams that build features and release code into production. Platform teams, on the other hand, exist to support application development teams and make resources

to survive. Every company is a technology company now. Yet, like all approaches to software development, there is more than one way to implement DevOps. As the DevOps Research and Assessment group (DORA) application code. This built-in observability allows for fast iteration and experimentation, and allows development teams to make crucial decisions before they deploy new features. Features or other updates like they know, using pull requests to accelerate deployment and operations tasks. The benefits for development teams include increased velocity and improved system reliability. Increased velocity with GitOps

Resources 11 14 21 23 31 36 eBook 3 GitOps in Practice A “you build it, you own it” development process requires tools that developers know and understand. GitOps is our name for how we use control and alerts you when there is a divergence. The ultimate goal of GitOps is to speed up development so that your team can make changes and updates safely and securely to complex applications running deployment. This allows your team to ship 30-100x more changes per day, and increases overall development output 2-3 times. 1. Increased Productivity 2. Enhanced Developer Experience Key Benefits of

kept alongside application code in Git. Keeping your entire system in Git means that your development team uses familiar Git-based workflows and pull requests to deploy both application and infrastructure in Git allow developers to use familiar workflows, reducing the time it takes to spin up new development, test environments, or deploy new features to a cluster. Teams can ship more changes per day approach, the development team remains dependent on the operations team to deploy new changes in production. GitOps empowers teams to become more efficient and strategic. It enables development teams to

standardizes the deployment and management of complex systems, improves collaboration between development and operations teams, and increases the reliability and reproducibility of deployments. GitOps them to infrastructure automation. Whereas DevOps is the practice of automating the software development lifecycle, GitOps contributes to the automation of infrastructure. This includes version control promotes modularity, independence, collaboration, versioning, and security. It allows for efficient development, testing, and deployment of both application and infrastructure components while ensuring clear