水平 Pod 自动伸缩:原理、实践与多指标应用
1. 理解自动伸缩的整体过程
自动伸缩过程涉及多个组件,其数据流向如下:
graph LR
classDef process fill:#E5F6FF,stroke:#73A6FF,stroke-width:2px;
Pod1(Pod):::process --> cAdvisor1(cAdvisor):::process
Pod2(...):::process --> cAdvisor1
Pod3(Pod):::process --> cAdvisor2(cAdvisor):::process
Pod4(...):::process --> cAdvisor2
cAdvisor1 --> Heapster(Heapster):::process
cAdvisor2 --> Heapster
Heapster --> HPA(Horizontal Pod Autoscaler):::process
HPA --> Deployment(Deployment):::process
Deployment --> ReplicaSet(ReplicaSet):::process
ReplicaSet --> Pods(Pods):::process
从 Pod 到 cAdvisor,再到 Heapster,最后到水平 Pod 自动伸缩器(Horizontal Pod Autoscaler,简称 HPA)的箭头,指
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