- 必要的三个组件：headless service、StatefulSet、volumeClaimTemplate
- 准备pv
apiVersion: v1 kind: PersistentVolume metadata: name: pv001 labels: name: pv001 spec: nfs: path: /data/volumes/v1 server: 192.168.100.1 accessModes: ["ReadWriteOnce"] capacity: storage: 5Gi --- apiVersion: v1 kind: PersistentVolume metadata: name: pv002 labels: name: pv002 spec: nfs: path: /data/volumes/v2 server: 192.168.100.1 accessModes: ["ReadWriteOnce"] capacity: storage: 5Gi --- apiVersion: v1 kind: PersistentVolume metadata: name: pv003 labels: name: pv003 spec: nfs: path: /data/volumes/v3 server: 192.168.100.1 accessModes: ["ReadWriteOnce"] capacity: storage: 5Gi --- apiVersion: v1 kind: PersistentVolume metadata: name: pv004 labels: name: pv004 spec: nfs: path: /data/volumes/v4 server: 192.168.100.1 accessModes: ["ReadWriteOnce"] capacity: storage: 5Gi --- apiVersion: v1 kind: PersistentVolume metadata: name: pv005 labels: name: pv005 spec: nfs: path: /data/volumes/v5 server: 192.168.100.1 accessModes: ["ReadWriteOnce"] capacity: storage: 5Gi
- 创建3个有状态副本（使用nginx模拟）
apiVersion: v1 kind: Service metadata: name: myapp labels: app: myapp spec: ports: - port: 80 name: web clusterIP: None selector: app: myapp-pod --- apiVersion: apps/v1 kind: StatefulSet metadata: name: myapp spec: serviceName: myapp replicas: 3 selector: matchLabels: app: myapp-pod template: metadata: labels: app: myapp-pod spec: containers: - name: myapp image: dongfeimg/myapp:v1 ports: - containerPort: 80 name: web volumeMounts: - name: myappdata mountPath: /usr/share/nginx/html volumeClaimTemplates: - metadata: name: myappdata spec: accessModes: ["ReadWriteOnce"] resources: requests: storage: 5Gi
- 扩容/缩容
# kubectl scale sts myapp --replicas=5 # kubectl patch sts myapp -p '{"spec":{"replicas":2}}' - 更新
# kubectl patch sts myapp -p '{"spec":{"updateStrategy":{"rollingUpdate":{partition":4}}}}' #修改更新分区； # kubectl set image sts/myapp myapp=dongfeimg/myapp:v2
更新分区："partition":4
代表pod序号大于等于4的pod做滚动更新，更新时倒序更新
来源：博客园
作者：生生不息.连绵不绝
链接：https://www.cnblogs.com/L-dongf/p/11442253.html