k8s使用rbd作为存储

如果需要使用rbd作为后端存储的话，需要先安装ceph-common

需要提前在ceph集群上创建pool，然后创建image

[root@ceph01 ~]# ceph osd pool create pool01
[root@ceph01 ~]# ceph osd pool application enable pool01 rbd
[root@ceph01 ~]# rbd pool init pool01
[root@ceph01 ~]# rbd create pool01/test --size 10G --image-format 2 --image-feature layerin
[root@ceph01 ~]# rbd info pool01/test

编写yaml文件

apiVersion: apps/v1
kind: Deployment
metadata:
  creationTimestamp: null
  labels:
    app: rbd
  name: rbd
spec:
  replicas: 1
  selector:
    matchLabels:
      app: rbd
  strategy: {}
  template:
    metadata:
      creationTimestamp: null
      labels:
        app: rbd
    spec:
      volumes:
      - name: test
        rbd:
          fsType: xfs
          keyring: /root/admin.keyring
          monitors:
          - 192.168.200.230:6789
          pool: pool01
          image: test 
          user: admin
          readOnly: false
      containers:
      - image: nginx
        imagePullPolicy: IfNotPresent
        volumeMounts:
        - mountPath: /usr/share/nginx/html
          name: test
        name: nginx
        resources: {}
status: {}

[root@master ~]# kubectl get pods
NAME                         READY   STATUS              RESTARTS        AGE
rbd-888b8b747-n56wr          1/1     Running   0               26m

这个时候k8s就使用了rbd作为存储

如果这个地方一直显示ContainerCreating的话，可能是没有安装ceph-common