态持续地驱动到所需的状态。 如何从A到C不要紧，集中控制也不需要；这种做法更类似于编排 。 这使系统更易⽤、更 强⼤，更具弹性和可扩展性。 译者按：编排和编制：https://wenku.baidu.com/view/ad063ef2f61fb7360b4c65cd.html Kubernetes的含义是什么？K8S呢？ Kubernetes源⾃希腊语，意思是舵⼿或⻜⾏员 ，是governor（掌舵⼈） 和cybernetic（控制论） 的根源。 K8s是将8 个字⺟“ubernete”替换为“8”的缩写。 译者按：控制论简介（讲解了什么是 governor&cybernetic）：https://wenku.baidu.com/view/1d97762c0066f5335a812157.html 原⽂ https://kubernetes.io/docs/concepts/overview/what-is-kubernetes/ 。如果您的机器在国内，请： 考虑科学上⽹ 或修改Kubespray中的gcr地址，改为其他仓库地址，例如阿⾥云镜像地址。 主机规划 IP 作⽤ 172.20.0.87 ansible-client 172.20.0.88 master,node 172.20.0.89 master,node 172.20.0.90 node 172.20.0.91 node 172.20.0.92

add/update/delete of all Asta Xie instances $ kubectl get astaxie NAME KIND astaxie1 AstaXie.v1.cr.client-go.k8s.io My AstaXie Object & Controller etcd kube-apiserver types register AstaXie Controller - controller/network_controller.go Pattern 2: Gode Generator • client-gen: generate typed Kubernetes AP client for type • client.Pod.Get().Resource(…).Do() • conversion-gen: seamless upgrades between remote (no-op) Sandbox Create Delete List Container Create Start Exec Image Pull List shim client api dockerd runtime pod CRI Spec Deployment • yum install -y kubelet kubeadm kubectl • sed

mountPath: "/etc/localtime" readOnly: true Step3. 安装和测试 redis client helm install redis-cluster redis-cluster kubectl exec -it redis-cluster-0 -- redis-cli -c -h - "tcp://emqx-headless:1883" topics: - "/s2i/report" client_id: $POD_NAME-report username: "telegraf" password: "" name_override: - "tcp://emqx-headless:1883" topics: - "/s2i/remoteinvokelog" client_id: $POD_NAME-remoteinvokelog username: "telegraf" password: "" name_override:

压测平台 监控&大盘• APIServer & ETCD & Webhook Load balance ETCD Webhook Client Kubelets APIServer Http2 -> http1.1 Upgrade Etcd client v3.3.15 周期性重建连接 slb slb 直连 设置maxSurge• 客户端和服务端的同步机制 List & Watch优化 Cache Read & Index APIServer Client List / Get ETCD rv=nil Page read Filter by condition• APIServer 缓存一致性读 • 索引支持动态新增 • Cache Ready Cache Read & Index APIServer Client list/get @t0 ETCD rv=nil

充分借助容器平台功能 海尔工业互联网 - 微服务之负载均衡 V IP node node LB node pod node node E.P. E.P. E.P. 路 由 路 由 Client LB pod pod pod pod pod caicloud.io/a caicloud.io/b caicloud.io/a caicloud.io/b 负载均衡器（LB）: Endpoint-admin Server • 为 Console-web 提供 Rest API 服务 • 与 Endpoint-admin Client 进行通信 • 接受 Endpoint-admin Client 心跳信息 Endpoint-admin Client • 提供代理服务 • 调用容器 API 执行相关命令 • 上报心跳信息 • 上报监控信息 List and add endpoint

creates topologies, attaches logical ports, etc. based on triggers from the Adapter layer • NSX API Client: Implements a standardized interface to the NSX API Network Container Plugin (NCP) NSX Manager Kubernetes Master etcd API-Server Scheduler NSX Container Plugin (NCP) NSX Infra NSX Manager API Client Kubernetes Adapter Kubernetes Master etcd API-Server Scheduler Architecture • NSX-T Namespace bar NSX / Kubernetes Topology C C C C NSX Container Plugin (NCP) NSX Infra NSX Manager API Client Kubernetes Adapter 1. NCP creates a ‘watch’ on K8s API for any Namespace events 2. A user

Watches(&source.Kind{Type: apiType}, &handler.EnqueueRequestForObject{}). func (blder *Builder) For(object client.Object, opts ...ForOption) *Builder {...} // Owns defines types of Objects being *generated* by EnqueueRequestForOwner([...], ownerType, OnlyControllerOwner())). func (blder *Builder) Owns(object client.Object, opts ...OwnsOption) *Builder // Watches defines the type of Object to watch, and configures WatchesRawSource(source.Kind(scheme, object), eventhandler, opts...). func (blder *Builder) Watches(object client.Object, eventhandler handler.EventHandler, opts ...WatchesOption) *Builder Reconcile Loop(Objects

where a range of different hardware is used. But what does this mean from an opera- tional point of view? How do soldiers in the- atres of war benefit from this innovation? Driving Insight at the Tactical scenarios as pos- sible, where it can make a real and tangible difference. From an innovation point-of- view, the digital solutions business is seeing the impact of SmartEdge on the evolution of the device

CronJob Job Pod 1. 定时执行的批处理任务 2. 定时任务并发策略 * Allow * Forbid * Replace 3. 支持单任务并发控制 一个简单的编排案例 Client API DB API Proxy DB Proxy DB Backup Monitoring Deployment StatefulSet Service CronJob Volumes + Deployment StatefulSet DaemonSet Job CronJob = 无状态应用 有状态应用 守护型应用 批处理任务 应用编排架构 重新审视这个例子 Client API DB API Proxy DB Proxy DB Backup Monitoring 无状态应用 有状态应用 守护型应用 批处理任务 应用编排架构 应用编排架构

Viking 侦听 Pod, Service, Ingress等资源变化 ECI SLB DNS 双向同步 IaaS资源状态 K8S资源 CRUD K8S Client ECI Pod Viking agent Container Container Kernel Containerd 创建/删除Pod 上报Pod状态 Pod状态逼近 Kubernetes集群 Demo: 基于Serverless Kubernetes的Spark数据处理 Worker-1 Worker-2 Worker-N Pod Pod Pod Pod Client spark-submit 开始使用 Get Started • 现开放区域：杭州、上海、美西，公测期间免费，欢迎试用 • 计划12月份正式对全体用户开放，开始商业化 • 控制台：https://cs