everything needed to run your application • Build once run anywhere • Starts in seconds: Great for scalability • Images are stored in a centralized place (Docker Hub, Azure Container Registry, gcr, ECR etc

server ops – No provisioning, updating, and managing server infrastructure. – Flexible Scalability • No compute cost when idle Benefits Serverless landscape defined in CNCF Kubernetes

systems Distributing secrets Checking application health Replicating application instances Using Horizontal Pod Autoscaling Naming and discovering Balancing loads Rolling updates Monitoring resources 字段即可轻松缩放ReplicaSet。ReplicaSet controller会确保集群中有指定数量的Pod可⽤并 可操作。 ReplicaSet作为Horizontal Pod Autoscaler（HPA）⽬标 ReplicaSet也可以是 Horizontal Pod Autoscalers (HPA) 的⽬标。也就是说，ReplicaSet可以由HPA⾃动伸缩。以下是 ⼀个HPA指向我们在上⼀个 scale deployment nginx-deployment --replicas=10 deployment "nginx-deployment" scaled 假设您的群集启⽤了 horizontal pod autoscaling 功能，您可以为Deployment设置⼀个autoscaler，并根据现有Pod的 CPU利⽤率，选择要运⾏的Pod的最⼩和最⼤个数。 $ kubectl

RC/Deployment Scale 服务画像 监控中台 serviceB Pod B1 Pod B2 Pod B3 RC/Deployment Scale Horizontal Pod Autoscaler Horizontal Pod Autoscaler 获取metrics CPU Mem已经支持指标自定 义metrics(用户自定义指标) 获取metrics CPU Mem已经支持指标自定

load is high How to expand horizontally more quickly and flexibly HPA-controller Supporting horizontal scaling of business is one of the essential functions on the cloud, but the HPA Controller of

个任务全部成功；工作队列型任务根据应用确认的全局成功而标志成功 23 www.h3c.com Confidential 秘密 23 23 K8s基本概念和术语介绍（HPA） HPA Horizontal Pod Autoscaler（横向自动扩容）： 他也是属于k8s的资源对象，通过追踪分析RC控制的所有目标Pod的负载变化情况，来确定是否需要针对性的调整Pod 的副本数，这是HPA的实