5. Ceph CephFS文件存储

一、 创建MDS（CephFS集群）

1、创建mds集群

ceph-deploy mds create ceph01 ceph02 ceph03

2、创建元数据pool和数据pool

ceph osd pool create cephfs_metadata 64
ceph osd pool create cephfs_data 64
ceph fs new cephfs cephfs_metadata cephfs_data

[root@ceph01 my-cluster]# ceph fs ls
name: cephfs, metadata pool: cephfs_metadata, data pools: [cephfs_data ]

3、CephFS mount方式挂载

[root@c1 ~]# cat /etc/ceph/ceph.client.admin.keyring
[client.admin]
  key = AQDVV+Nf6nwoJRAA9DQaKs8jcHEXuby8YInhhQ==
  caps mds = "allow *"
  caps mgr = "allow *"
  caps mon = "allow *"
  caps osd = "allow *"
[root@c1 ~]# mount -t ceph ceph02:/ /media/ -o name=admin,secret=AQDVV+Nf6nwoJRAA9DQaKs8jcHEXuby8YInhhQ==
[root@c1 ~]# df -h /media/

​开机自动挂载​

#1.将密钥导入到文件中
echo 'AQDVV+Nf6nwoJRAA9DQaKs8jcHEXuby8YInhhQ==' > /root/.secret.key
echo 'ceph01:6789:/     /media    ceph    name=admin,secretfile=/root/.secret.key,noatime,_netdev    0 0' >> /etc/fstab
mount -a

4、cephfs管理命令

#查询所有的文件系统
ceph fs ls
#查询文件系统状态
ceph fs status cephfs

#更改文件系统多活节点
ceph fs cephfs set max_mds 2
ceph fs cephfs set max_mds 1


1. 设置存储池副本数
#ceph osd pool get testpool size
#ceph osd pool set testpool size 3
 
2. 打印存储池列表
#ceph osd lspools
 
3. 创建 删除 存储池
创建pool
# ceph osd pool create testPool 64
 
重命名pool
# ceph osd pool rename testPool amizPool
 
获取pool 副本数
# ceph osd pool get amizPool size
设置pool 副本数
# ceph osd pool set amizPool size 3
 
获取pool pg_num/pgp_num
# ceph osd pool get amizPool pg_num
# ceph osd pool get amizPool pgp_num
设置pool pg_num/pgp_num
# ceph osd pool set amizPool pg_num 128
# ceph osd pool set amizPool pgp_num 128
 
删除存储池
# ceph osd pool delete  amizPool  amizPool --yes-i-really-really-mean-it  
 
删除池提示错误
Error EBUSY: pool 'testpool' is in use by CephFS 
# ceph mds remove_data_pool testpool
# ceph osd pool delete testpool testpool  --yes-i-really-really-mean-it
 
 
4. 设置查看存储池pool 配额
# ceph osd pool set-quota cephfs max_bytes 6G

查看存储池pool 配额
# ceph osd pool get-quota poolroom1
    quotas for pool 'poolroom1':
      max objects: N/A
      max bytes  : 6144MB   # 存储池pool配额 6G

二、Kuboard K8S 集群添加CephFS持久化存储

请参考 kuboard网关文档 https://www.kuboard.cn/learning/k8s-intermediate/persistent/ceph/k8s-config.html#%E5%89%8D%E6%8F%90%E6%9D%A1%E4%BB%B6