Block Volume(块卷)
apiVersion: v1 kind: PersistentVolumeClaim metadata: name: longhorn-block-vol spec: accessModes: - ReadWriteOnce volumeMode: Block storageClassName: longhorn resources: requests: storage: 2Gi --- apiVersion: v1 kind: Pod metadata: name: block-volume-test namespace: default spec: containers: - name: block-volume-test image: nginx:stable-alpine imagePullPolicy: IfNotPresent volumeDevices: - devicePath: /dev/longhorn/testblk name: block-vol ports: - containerPort: 80 volumes: - name: block-vol persistentVolumeClaim: claimName: longhorn-block-vol
CSI Persistent Volume(CSI 持久卷)
apiVersion: v1 kind: PersistentVolume metadata: name: longhorn-vol-pv spec: capacity: storage: 2Gi volumeMode: Filesystem accessModes: - ReadWriteOnce persistentVolumeReclaimPolicy: Delete storageClassName: longhorn csi: driver: driver.longhorn.io fsType: ext4 volumeAttributes: numberOfReplicas: '3' staleReplicaTimeout: '2880' volumeHandle: existing-longhorn-volume --- apiVersion: v1 kind: PersistentVolumeClaim metadata: name: longhorn-vol-pvc spec: accessModes: - ReadWriteOnce resources: requests: storage: 2Gi volumeName: longhorn-vol-pv storageClassName: longhorn --- apiVersion: v1 kind: Pod metadata: name: volume-pv-test namespace: default spec: restartPolicy: Always containers: - name: volume-pv-test image: nginx:stable-alpine imagePullPolicy: IfNotPresent livenessProbe: exec: command: - ls - /data/lost+found initialDelaySeconds: 5 periodSeconds: 5 timeoutSeconds: 4 volumeMounts: - name: vol mountPath: /data ports: - containerPort: 80 volumes: - name: vol persistentVolumeClaim: claimName: longhorn-vol-pvc
Deployment(部署)
apiVersion: v1 kind: Service metadata: name: mysql labels: app: mysql spec: ports: - port: 3306 selector: app: mysql clusterIP: None --- apiVersion: v1 kind: PersistentVolumeClaim metadata: name: mysql-pvc spec: accessModes: - ReadWriteOnce storageClassName: longhorn resources: requests: storage: 2Gi --- apiVersion: apps/v1 kind: Deployment metadata: name: mysql labels: app: mysql spec: selector: matchLabels: app: mysql # has to match .spec.template.metadata.labels strategy: type: Recreate template: metadata: labels: app: mysql spec: restartPolicy: Always containers: - image: mysql:5.6 name: mysql livenessProbe: exec: command: - ls - /var/lib/mysql/lost+found initialDelaySeconds: 5 periodSeconds: 5 timeoutSeconds: 4 env: - name: MYSQL_ROOT_PASSWORD value: changeme ports: - containerPort: 3306 name: mysql volumeMounts: - name: mysql-volume mountPath: /var/lib/mysql env: - name: MYSQL_ROOT_PASSWORD value: "rancher" volumes: - name: mysql-volume persistentVolumeClaim: claimName: mysql-pvc
Pod with PersistentVolumeClaim(带有持久卷声明的 Pod)
apiVersion: v1 kind: PersistentVolumeClaim metadata: name: longhorn-volv-pvc spec: accessModes: - ReadWriteOnce storageClassName: longhorn resources: requests: storage: 2Gi --- apiVersion: v1 kind: Pod metadata: name: volume-test namespace: default spec: restartPolicy: Always containers: - name: volume-test image: nginx:stable-alpine imagePullPolicy: IfNotPresent livenessProbe: exec: command: - ls - /data/lost+found initialDelaySeconds: 5 periodSeconds: 5 timeoutSeconds: 4 volumeMounts: - name: volv mountPath: /data ports: - containerPort: 80 volumes: - name: volv persistentVolumeClaim: claimName: longhorn-volv-pvc
Restore to file(恢复到文件)
apiVersion: v1 kind: Pod metadata: name: restore-to-file namespace: longhorn-system spec: nodeName: <NODE_NAME> containers: - name: restore-to-file command: # set restore-to-file arguments here - /bin/sh - -c - longhorn backup restore-to-file '<BACKUP_URL>' --output-file '/tmp/restore/<OUTPUT_FILE>' --output-format <OUTPUT_FORMAT> # the version of longhorn engine should be v0.4.1 or higher image: longhorn/longhorn-engine:v0.4.1 imagePullPolicy: IfNotPresent securityContext: privileged: true volumeMounts: - name: disk-directory mountPath: /tmp/restore # the argument <output-file> should be in this directory env: # set Backup Target Credential Secret here. - name: AWS_ACCESS_KEY_ID valueFrom: secretKeyRef: name: <S3_SECRET_NAME> key: AWS_ACCESS_KEY_ID - name: AWS_SECRET_ACCESS_KEY valueFrom: secretKeyRef: name: <S3_SECRET_NAME> key: AWS_SECRET_ACCESS_KEY - name: AWS_ENDPOINTS valueFrom: secretKeyRef: name: <S3_SECRET_NAME> key: AWS_ENDPOINTS volumes: # the output file can be found on this host path - name: disk-directory hostPath: path: /tmp/restore restartPolicy: Never
Simple Pod(简单 Pod)
apiVersion: v1 kind: Pod metadata: name: longhorn-simple-pod namespace: default spec: restartPolicy: Always containers: - name: volume-test image: nginx:stable-alpine imagePullPolicy: IfNotPresent livenessProbe: exec: command: - ls - /data/lost+found initialDelaySeconds: 5 periodSeconds: 5 timeoutSeconds: 4 volumeMounts: - name: volv mountPath: /data ports: - containerPort: 80 volumes: - name: volv persistentVolumeClaim: claimName: longhorn-simple-pvc
Simple PersistentVolumeClaim(简单持久卷声明)
apiVersion: v1 kind: PersistentVolumeClaim metadata: name: longhorn-simple-pvc spec: accessModes: - ReadWriteOnce storageClassName: longhorn resources: requests: storage: 1Gi
StatefulSet
apiVersion: v1 kind: Service metadata: name: nginx labels: app: nginx spec: ports: - port: 80 name: web selector: app: nginx type: NodePort --- apiVersion: apps/v1 kind: StatefulSet metadata: name: web spec: selector: matchLabels: app: nginx # has to match .spec.template.metadata.labels serviceName: "nginx" replicas: 2 # by default is 1 template: metadata: labels: app: nginx # has to match .spec.selector.matchLabels spec: restartPolicy: Always terminationGracePeriodSeconds: 10 containers: - name: nginx image: k8s.gcr.io/nginx-slim:0.8 livenessProbe: exec: command: - ls - /usr/share/nginx/html/lost+found initialDelaySeconds: 5 periodSeconds: 5 timeoutSeconds: 4 ports: - containerPort: 80 name: web volumeMounts: - name: www mountPath: /usr/share/nginx/html volumeClaimTemplates: - metadata: name: www spec: accessModes: [ "ReadWriteOnce" ] storageClassName: "longhorn" resources: requests: storage: 1Gi
StorageClass
kind: StorageClass apiVersion: storage.k8s.io/v1 metadata: name: longhorn provisioner: driver.longhorn.io allowVolumeExpansion: true parameters: numberOfReplicas: "3" staleReplicaTimeout: "2880" # 48 hours in minutes fromBackup: "" # diskSelector: "ssd,fast" # nodeSelector: "storage,fast" # fsType: "ext4" # recurringJobs: '[ # { # "name":"snap", # "task":"snapshot", # "cron":"*/1 * * * *", # "retain":1 # }, # { # "name":"backup", # "task":"backup", # "cron":"*/2 * * * *", # "retain":1, # "labels": { # "interval":"2m" # } # } # ]'
请注意，只有 ext4 文件系统支持在卷意外分离后(detached unexpectedly)自动重新挂载。
