Kubernetes Rook

Rook for ceph #

Rook建立Ceph集群流程[1] #

rook的crd建立好之后，
Rook的operator会把rook的控制面建立出来
然后把storageclass和csi driver都注册好。
用户只要建立pvc，pvc里指定用哪个storageclass，然后csi driver会去工作。

Rook cluster installation [2][3] [I] #
Ceph存储类型 #
  • Block
  • FileSystem
  • Object
Block Storage [4][5] [II] #
  • install
apiVersion: ceph.rook.io/v1
kind: CephBlockPool
metadata:
  name: replicapool
  namespace: rook-ceph
spec:
  failureDomain: host
  replicated:
    size: 3
---
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
   name: rook-ceph-block
# Change "rook-ceph" provisioner prefix to match the operator namespace if needed
provisioner: rook-ceph.rbd.csi.ceph.com
parameters:
    # clusterID is the namespace where the rook cluster is running
    clusterID: rook-ceph
    # Ceph pool into which the RBD image shall be created
    pool: replicapool

    ... 

# Delete the rbd volume when a PVC is deleted
reclaimPolicy: Delete
  • Consume Block[II] eg 1. StatefulSet 通过StorageClass动态申请pv
    volumeClaimTemplates:
    -metadata:
      ...
      spec:
      ...
        storageClassName: rook-ceph-block
        volumeMode: Filesystem

eg 2. pvc动态申请pv， deployment申请pvc

       volumes: ...
         ...
         - name: pvc-test
           persistentVolumeClaim:
             claimName: rook-ceph-test-pvc
FileSystem[6][7] [III] #
PVC在线扩容，PVC快照和回滚 #

参考 #

  1. 云原生训练营 第0期-模块七

  2. Ceph Cluster CRD ***

  3. Ceph Storage Quickstart

  4. Block Storage

  5. Ceph Block Pool CRD

  6. Shared Filesystem

  7. Ceph Shared Filesystem CRD

  8. kubernetes架构师课程 杜宽 *** [I]P112-P114 installation, [II]P115-P117 block, [III] P118 FileSystem