缩写: sts

通过 kubectl api-resources 可以查到：

NAME	SHORTNAMES	APIVERSION	NAMESPACED	KIND
statefulsets	sts	apps/v1	true	StatefulSet

web-sts.yaml

apiVersion: v1
kind: Service
metadata:
  name: nginx
  labels:
    app: nginx
spec:
  ports:
  - port: 80
    name: web-sts-svc
  clusterIP: None
  selector:
    app: nginx
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: web
spec:
  serviceName:  "nginx"
  replicas: 2
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx:1.7.9
        ports:
        - containerPort: 80
          name: web

创建sts

kubectl create -f web-sts.yaml

扩缩容

扩容：kubectl scale sts web --replicas=5

缩容：kubectl scale sts web --replicas=3