GlusterFSはシンプルに下記で作成
03 Ubuntu GlusterFS

apiVersion: v1
kind: Endpoints
metadata:
  name: glusterfs
  labels:
    storage.k8s.io/name: glusterfs
    storage.k8s.io/part-of: kubernetes-complete-reference
    storage.k8s.io/created-by: ssbostan
subsets:
  - addresses:
      - ip: 172.16.0.93
        hostname: g-work01
      - ip: 172.16.0.153
        hostname: g-work02
      - ip: 172.16.0.166
        hostname: g-work03
    ports:
      - port: 1

kubectl create -f glusterfs-endpoint.yaml

kind: Service
apiVersion: v1
metadata:
  name: glusterfs
spec:
  ports:
  - port: 1

kubectl create -f glusterfs-service.yaml

k8s-volumeを作成している事を前提に説明。

# gluster volume status
Status of volume: k8s-volume
Gluster process                             TCP Port  RDMA Port  Online  Pid
------------------------------------------------------------------------------
Brick g-work01:/gluster/volume              49152     0          Y       33456
Brick g-work02:/gluster/volume              49152     0          Y       37407
Brick g-work03:/gluster/volume              49152     0          Y       31930
Self-heal Daemon on localhost               N/A       N/A        Y       33477
Self-heal Daemon on g-work03                N/A       N/A        Y       31951
Self-heal Daemon on g-work02                N/A       N/A        Y       37428
 
Task Status of Volume k8s-volume

# mount.glusterfs localhost:k8s-volume /mnt/

# df /mnt
Filesystem           1K-blocks    Used Available Use% Mounted on
localhost:k8s-volume  20961280 1968712  18992568  10% /mnt

# mkdir /mnt/pv01

kind: PersistentVolume
apiVersion: v1
metadata:
  name: k8s-volume-pv01
  labels:
    name: k8s-volume-pv01
spec:
  accessModes:
  - ReadWriteMany
  capacity:
    storage: 1Gi
  glusterfs:
    endpoints: glusterfs
    path: k8s-volume/pv01
    readOnly: false

kubectl create -f pv.yaml

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  creationTimestamp: null
  labels:
    io.kompose.service: k8s-volume-pvc01
  name: k8s-volume-pvc01
spec:
  accessModes:
  - ReadWriteMany
  resources:
    requests:
      storage: 1Gi
  selector:
     matchLabels:
       name: k8s-volume-pv01
status: {}

kubectl create -f pvc.yaml