rwx-and-rox.md

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Use ReadWriteMany and ReadOnlyMany

How to use ReadWriteMany and ReadOnlyMany in JuiceFS

JuiceFS supports ReadWriteMany and ReadOnlyMany access method.

ReadWriteMany

You can use static provision or dynamic provision . We take static provision as example:

The process of creating a secret is the same as the static provision document.

Set ReadWriteMany in both PersistentVolume and PersistentVolumeClaim:

kubectl apply -f - <<EOF
---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: juicefs-pv
  labels:
    juicefs-name: ten-pb-fs
spec:
  capacity:
    storage: 10Pi
  volumeMode: Filesystem
  accessModes:
    - ReadWriteMany
  persistentVolumeReclaimPolicy: Retain
  csi:
    driver: csi.juicefs.com
    volumeHandle: test-bucket
    fsType: juicefs
    nodePublishSecretRef:
      name: juicefs-secret
      namespace: default
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: juicefs-pvc
  namespace: default
spec:
  accessModes:
    - ReadWriteMany
  volumeMode: Filesystem
  storageClassName: ""
  resources:
    requests:
      storage: 10Pi
  selector:
    matchLabels:
      juicefs-name: ten-pb-fs
---
apiVersion: v1
kind: Pod
metadata:
  name: juicefs-app-rwx
  namespace: default
spec:
  containers:
  - args:
    - -c
    - while true; do echo $(date -u) >> /data/out.txt; sleep 5; done
    command:
    - /bin/sh
    image: centos
    name: app
    volumeMounts:
    - mountPath: /data
      name: data
    resources:
      requests:
        cpu: 10m
  volumes:
  - name: data
    persistentVolumeClaim:
      claimName: juicefs-pvc
EOF

ReadOnlyMany

The process of creating a secret is the same as the static provision document.

Set ReadOnlyMany in both PersistentVolume and PersistentVolumeClaim:

kubectl apply -f - <<EOF
---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: juicefs-pv
  labels:
    juicefs-name: ten-pb-fs
spec:
  capacity:
    storage: 10Pi
  volumeMode: Filesystem
  accessModes:
    - ReadOnlyMany
  persistentVolumeReclaimPolicy: Retain
  csi:
    driver: csi.juicefs.com
    volumeHandle: test-bucket
    fsType: juicefs
    nodePublishSecretRef:
      name: juicefs-secret
      namespace: default
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: juicefs-pvc
  namespace: default
spec:
  accessModes:
    - ReadOnlyMany
  volumeMode: Filesystem
  storageClassName: ""
  resources:
    requests:
      storage: 10Pi
  selector:
    matchLabels:
      juicefs-name: ten-pb-fs
---
apiVersion: v1
kind: Pod
metadata:
  name: juicefs-app-rox
  namespace: default
spec:
  containers:
  - args:
    - -c
    - while true; do echo $(date -u) >> /data/out.txt; sleep 5; done
    command:
    - /bin/sh
    image: centos
    name: app
    volumeMounts:
    - mountPath: /data
      name: data
    resources:
      requests:
        cpu: 10m
  volumes:
  - name: data
    persistentVolumeClaim:
      claimName: juicefs-pvc
EOF