Local PV是从kuberntes 1.10开始引入，本质目的是为了解决hostPath的缺陷。通过PV控制器与Scheduler的结合，会对local PV做针对性的逻辑处理，从而，让Pod在多次调度时，能够调度到同一个Node上。
这次，测试了一下将local PV挂载到一个httpd的应用上。
要注意，pvc是按namespace提供的。还有，matchExpressions作匹配的主机名规则。
一，local-pv.yaml
kind: StorageClass apiVersion: storage.k8s.io/v1 metadata: name: local-storage provisioner: kubernetes.io/no-provisioner volumeBindingMode: WaitForFirstConsumer --- apiVersion: v1 kind: PersistentVolume metadata: name: local-pv-sda spec: capacity: storage: 100Gi accessModes: - ReadWriteOnce persistentVolumeReclaimPolicy: Retain storageClassName: local-storage local: path: /data/pv nodeAffinity: required: nodeSelectorTerms: - matchExpressions: - key: kubernetes.io/hostname operator: In values: - spark-docker --- kind: PersistentVolumeClaim apiVersion: v1 metadata: name: local-pvc-sda namespace: in-demo spec: accessModes: - ReadWriteOnce storageClassName: local-storage resources: requests: storage: 10Gi
二，httpd.yaml
apiVersion: extensions/v1beta1 kind: Deployment metadata: name: httpd namespace: in-demo spec: replicas: 2 revisionHistoryLimit: 5 strategy: type: RollingUpdate rollingUpdate: maxSurge: 1 maxUnavailable: 0 template: metadata: labels: app: httpd-dm spec: terminationGracePeriodSeconds: 60 restartPolicy: Always containers: - name: httpd image: httpd:alpine imagePullPolicy: IfNotPresent volumeMounts: - name: storage-localpv mountPath: "/usr/local/apache2/htdocs" volumes: - name: storage-localpv persistentVolumeClaim: claimName: local-pvc-sda --- apiVersion: v1 kind: Service metadata: name: httpd-svc namespace: in-demo spec: ports: - name: http-port port: 80 targetPort: 80 selector: app: httpd-dm
转载于:https://www.cnblogs.com/aguncn/p/11310146.html
