一个yaml文件
apiVersion: apps/v1
kind: Deployment
metadata:
creationTimestamp: null
labels:
id: very-important
name: deploy-important
namespace: project-tiger
spec:
replicas: 3
selector:
matchLabels:
id: very-important
strategy: {}
template:
metadata:
creationTimestamp: null
labels:
id: very-important
spec:
affinity:
podAntiAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
- topologyKey: kubernetes.io/hostname
labelSelector:
matchExpressions:
- key: id
operator: In
values:
- very-important
containers:
- image: nginx:1.17.6
name: container1
resources: {}
- name: container2
image: kubernetes/pause
status: {}
podAntiAffinity 告诉调度器避免多个带有id标签的pod在同一个节点上运行,这样就可以保证同一个节点上只有一个带有id标签的pod。