Cloud Native Contrail Networking Installation and Life Cycle Management Guide for Rancher RKE2 Published 2023-09-08 Juniper Networks, Inc. 1133 Innovation Way Sunnyvale, California 94089 USA 408-745-2000 to change, modify, transfer, or otherwise revise this publication without notice. Cloud Native Contrail Networking Installation and Life Cycle Management Guide for Rancher RKE2 Copyright © 2023 Juniper agree to the terms and conditions of that EULA. ## Table of Contents Introduction Cloud-Native Contrail Networking Overview | 2 Terminology | 4 CN2 Components | 6 Deployment Models | 11 Single

• Conventions Over Configuration • The Model Layer • The View Layer • The Controller Layer • CakePHP Request Cycle • Just the Start • Additional Reading Configuration • Creating our First Model • CMS Tutorial - Creating the Articles Controller • Create the Article List Template • Create the View Action Database Database Configuration Creating our First Model CMS Tutorial - Creating the Articles Controller Create the Article List Template Create the View Action Create the View Template Adding

• Conventions Over Configuration • The Model Layer • The View Layer • The Controller Layer • CakePHP Request Cycle • Just the Start • Additional Reading Configuration • Creating our First Model • CMS Tutorial - Creating the Articles Controller • Create the Article List Template • Create the View Action Database Configuration • Creating our First Model • CMS Tutorial - Creating the Articles Controller • Create the Article List Template • Create the View Action • Create the View

Configuration A Note on mod_rewrite Blog Tutorial - Adding a layer Create a Post Model Create a Posts Controller Creating Post Views Adding Posts Data Validation Editing Posts Deleting Posts Routes Conclusion Up CakePHP Overview What is CakePHP? Why use it? Understanding Model-View-Controller The Model layer The View layer The Controller layer CakePHP request cycle Benefits Where to Get Help The Official CakePHP Controllers The App Controller Request parameters Controller actions Request Life-cycle callbacks Controller Methods Interacting with Views Flow Control Callbacks Other Useful Methods Controller Attributes $components

/f/0/b/af0ba3339ba8eb2fcdf2647d94c085d4/p9_9.jpg) ## Operator Pattern - Custom Resource & Controller apiVersion: pingcap.com/v1alpha1 kind: TidbCluster spec: version: v4.0.3 pd: - Custom Resource - TidbCluster - Tidb Initializer - TidbMonitor - Backup/Restore - Custom Controller - Scheduler Extender (optional) - Admission Webhook (optional) - ...Scheduler framework, Aggregated /desired> Actual State TiDB Kubernetes API Compare & Make Changes ## Custom Controller TiDB Operator 

i18n Payload view-nunjucks view-ejs view-handlebars view-pug Router View WebSocket Logic Controller Cache session-file session-cookie session-db session-redis Session Middleware Extend Adapter //项目扩展配置文件 | | ---- middleware.js //中间件配置文件 | | ---- router.js //自定义路由配置文件 | | ---- controller //控制器目录 | | ---- base.js | | ---- index.js | | ---- logic //logic 目录 | | |--- index.js 下的 middleware 类无法在 3.0 下使用，3.0 下可以直接使用 Koa 的 middleware。 ## Controller 将基类 think.controller.base 改为 think.Controller，并移除 think.controller.rest 类。 ## Model 将基类 think.model.base 改为 think.Model。 ## 基础功能

概念，用于管理和运行基于应用程序领域的复杂有状态应用程序。给出了用 TPR + controller—runtime 早期版本的 sample: etcd operator ## CRD K8s 1.9 版本发布，CRD进入 beta 阶段并正式取代 TPR；controller-runtime 加入 K8s 社区并正式发布； 自此，CRD + controller-runtime 逐渐成为开发 operator 的首选 Application； Operator = CRD + control loop, i.e., Declarative API + Automation; kubebuilder + controller—runtime + helm ## Operator Capability Levels ## ANSIBLE ## Level I ## Basic Install Automated [Image](/uploads/documents/e/9/2/8/e9285922cb84ea7e2cf1f473a4f03572/p10_1.jpg) Node API server Cloud controller manager (optional) ![Image](/uploads/documents/e/9/2/8/e9285922cb84ea7e2cf1f473a4f03572/p10_2

7_1.jpg) Actual State ## Controllers • Controller tracks at least one resource type It’s a common approach to manage only one resource type per controller - Controllers reconciliation loop/control state of the resource (based on manifest) the actual one • Operator’s fundamental • Built-in controller examples: ☐ ReplicaSert ☐ Deployment ☐ StatefulSet ○ Job ## Operators • Concept was introduced message: Value is immutable rule: self == oldSelf ## V alidating Admission Webhooks “An admission controller is a piece of code that intercepts requests to the Kubernetes API server prior to persistence of

DispatcherServlet WebApplicationContext中特殊的Bean类型 默认的DispatcherServlet配置 DispatcherServlet的处理流程 控制器的实现 使用@Controller注解定义一个控制器 使用@RequestMapping注解映射请求路径 定义@RequestMapping注解的处理方法 异步请求的处理 对控制器测试 处理器映射 使用HandlerInterceptor拦截请求 并支持可配置的处理器映射、视图渲染、本地化、时区与主题渲染等，甚至还能支持文件上传。处理器是你的应用中注解了 @Controller 和 @RequestMapping 的类和方法，Spring为处理器方法提供了极其多样灵活的配置。Spring 3.0以后提供了 @Controller 注解机制、 @PathVariable 注解以及一些其他的特性，你可以使用它们来进行 RESTful web站点和应用的开发。 namespace WebApplicationContext的命名空间。默认是[servlet-name]-servlet 控制器的实现 21.3 控制器(Controller)的实现 …Spring implements a controller in a very abstract way, which enables you to create a wide variety of controllers

Handling exceptions ..... 284 13.11. Convention over configuration ..... 284 13.11.1. The Controller - ControllerClassNameHandlerMapping ..... 284 13.11.2. The Model - ModelMap (ModelAndView) ... Struts, this is the package to integrate with. Spring's MVC package provides a Model-View-Controller (MVC) implementation for web-applications. Spring's MVC framework is not just any old implementation; and theme resolution as well as support for upload files. The default handler is a very simple Controller interface, just offering a ModelAndView handleRequest(request, response) method. This can already