💻 工作存储CEPHCeph 运维
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CephFS 搭建

文章目录
  1. 1. 1. 创建元数据服务器
    1. 1.1. 1.1 安装 mds
    2. 1.2. 1.2 拷贝 ceph 配置及秘钥
    3. 1.3. 1.3 修改秘钥文件权限，保证有可读权限
    4. 1.4. 1.4 创建元数据服务器
  2. 2. 2. 存储池
    1. 2.1. 2.1 创建存储池数据
    2. 2.2. 2.2 创建存储池元数据
    3. 2.3. 2.3 查看存储池
  3. 3. 3. 文件系统
    1. 3.1. 3.1 创建文件系统
    2. 3.2. 3.2 查看文件系统
  4. 4. 4. mds 状态
    1. 4.1. 4.1 查看 mds 状态
  5. 5. 5. 内核驱动挂载 ceph 文件系统
    1. 5.1. 5.1 查看秘钥
    2. 5.2. 5.2 创建目录
    3. 5.3. 5.3 挂载文件系统
  6. 6. 6. 用户空间挂载 ceph 文件系统
    1. 6.1. 6.1 安装 ceph-fuse
    2. 6.2. 6.2 创建目录
    3. 6.3. 6.3 挂载文件系统

1. 创建元数据服务器

1.1 安装 mds

PG数量的预估 集群中单个池的PG数计算公式如下：PG 总数 = (OSD 数 * 100) / 最大副本数 / 池数 (结果必须舍入到最接近2的N次幂的值)

#ceph-deploy install mds_server

$ ceph-deploy install ceph-xxx-osd03.gz01

[ceph_deploy.conf][DEBUG ] found configuration file at: /root/.cephdeploy.conf
[ceph_deploy.cli][INFO  ] Invoked (1.5.39): /bin/ceph-deploy install ceph-xxx-osd03.gz01
[ceph_deploy.cli][INFO  ] ceph-deploy options:
[ceph_deploy.cli][INFO  ]  verbose                       : False
[ceph_deploy.cli][INFO  ]  testing                       : None
[ceph_deploy.cli][INFO  ]  cd_conf                       : <ceph_deploy.conf.cephdeploy.Conf instance at 0xcaa830>
[ceph_deploy.cli][INFO  ]  cluster                       : ceph
[ceph_deploy.cli][INFO  ]  dev_commit                    : None
[ceph_deploy.cli][INFO  ]  install_mds                   : False
[ceph_deploy.cli][INFO  ]  stable                        : None
[ceph_deploy.cli][INFO  ]  default_release               : False
[ceph_deploy.cli][INFO  ]  username                      : None
[ceph_deploy.cli][INFO  ]  adjust_repos                  : True
[ceph_deploy.cli][INFO  ]  func                          : <function install at 0xc22050>
[ceph_deploy.cli][INFO  ]  install_mgr                   : False
[ceph_deploy.cli][INFO  ]  install_all                   : False
[ceph_deploy.cli][INFO  ]  repo                          : False
[ceph_deploy.cli][INFO  ]  host                          : ['ceph-xxx-osd03.gz01']
[ceph_deploy.cli][INFO  ]  install_rgw                   : False
[ceph_deploy.cli][INFO  ]  install_tests                 : False
[ceph_deploy.cli][INFO  ]  repo_url                      : None
[ceph_deploy.cli][INFO  ]  ceph_conf                     : None
[ceph_deploy.cli][INFO  ]  install_osd                   : False
[ceph_deploy.cli][INFO  ]  version_kind                  : stable
[ceph_deploy.cli][INFO  ]  install_common                : False
[ceph_deploy.cli][INFO  ]  overwrite_conf                : False
[ceph_deploy.cli][INFO  ]  quiet                         : False
[ceph_deploy.cli][INFO  ]  dev                           : master
[ceph_deploy.cli][INFO  ]  nogpgcheck                    : False
[ceph_deploy.cli][INFO  ]  local_mirror                  : None
[ceph_deploy.cli][INFO  ]  release                       : None
[ceph_deploy.cli][INFO  ]  install_mon                   : False
[ceph_deploy.cli][INFO  ]  gpg_url                       : None
[ceph_deploy.install][DEBUG ] Installing stable version jewel on cluster ceph hosts ceph-xxx-osd03.gz01
[ceph_deploy.install][DEBUG ] Detecting platform for host ceph-xxx-osd03.gz01 ...
[ceph-xxx-osd03.gz01][DEBUG ] connected to host: ceph-xxx-osd03.gz01
[ceph-xxx-osd03.gz01][DEBUG ] detect platform information from remote host
[ceph-xxx-osd03.gz01][DEBUG ] detect machine type
[ceph_deploy.install][INFO  ] Distro info: CentOS Linux 7.2.1511 Core
[ceph-xxx-osd03.gz01][INFO  ] installing Ceph on ceph-xxx-osd03.gz01
[ceph-xxx-osd03.gz01][INFO  ] Running command: yum clean all
[ceph-xxx-osd03.gz01][DEBUG ] Loaded plugins: fastestmirror, langpacks, priorities
[ceph-xxx-osd03.gz01][WARNIN] Repository ceph is listed more than once in the configuration
[ceph-xxx-osd03.gz01][WARNIN] Repository epel is listed more than once in the configuration
[ceph-xxx-osd03.gz01][WARNIN] Repository epel-debuginfo is listed more than once in the configuration
[ceph-xxx-osd03.gz01][WARNIN] Repository epel-source is listed more than once in the configuration
[ceph-xxx-osd03.gz01][DEBUG ] Cleaning repos: base didi_update epel extras tmprepo updates
[ceph-xxx-osd03.gz01][DEBUG ] Cleaning up everything
[ceph-xxx-osd03.gz01][INFO  ] Running command: yum -y install epel-release
[ceph-xxx-osd03.gz01][DEBUG ] Loaded plugins: fastestmirror, langpacks, priorities
[ceph-xxx-osd03.gz01][WARNIN] Repository ceph is listed more than once in the configuration
[ceph-xxx-osd03.gz01][WARNIN] Repository epel is listed more than once in the configuration
[ceph-xxx-osd03.gz01][WARNIN] Repository epel-debuginfo is listed more than once in the configuration
[ceph-xxx-osd03.gz01][WARNIN] Repository epel-source is listed more than once in the configuration
[ceph-xxx-osd03.gz01][DEBUG ] Determining fastest mirrors
[ceph-xxx-osd03.gz01][DEBUG ] 132 packages excluded due to repository priority protections
[ceph-xxx-osd03.gz01][DEBUG ] Package matching epel-release-7-9.noarch already installed. Checking for update.
[ceph-xxx-osd03.gz01][DEBUG ] Nothing to do
[ceph-xxx-osd03.gz01][INFO  ] Running command: yum -y install yum-plugin-priorities
[ceph-xxx-osd03.gz01][DEBUG ] Loaded plugins: fastestmirror, langpacks, priorities
[ceph-xxx-osd03.gz01][WARNIN] Repository ceph is listed more than once in the configuration
[ceph-xxx-osd03.gz01][WARNIN] Repository epel is listed more than once in the configuration
[ceph-xxx-osd03.gz01][WARNIN] Repository epel-debuginfo is listed more than once in the configuration
[ceph-xxx-osd03.gz01][WARNIN] Repository epel-source is listed more than once in the configuration
[ceph-xxx-osd03.gz01][DEBUG ] Loading mirror speeds from cached hostfile
[ceph-xxx-osd03.gz01][DEBUG ] 132 packages excluded due to repository priority protections
[ceph-xxx-osd03.gz01][DEBUG ] Package yum-plugin-priorities-1.1.31-42.el7.noarch already installed and latest version
[ceph-xxx-osd03.gz01][DEBUG ] Nothing to do
[ceph-xxx-osd03.gz01][DEBUG ] Configure Yum priorities to include obsoletes
[ceph-xxx-osd03.gz01][WARNIN] check_obsoletes has been enabled for Yum priorities plugin
[ceph-xxx-osd03.gz01][INFO  ] Running command: rpm --import https://download.ceph.com/keys/release.asc
[ceph-xxx-osd03.gz01][INFO  ] Running command: yum remove -y ceph-release
[ceph-xxx-osd03.gz01][DEBUG ] Loaded plugins: fastestmirror, langpacks, priorities
[ceph-xxx-osd03.gz01][WARNIN] Repository ceph is listed more than once in the configuration
[ceph-xxx-osd03.gz01][WARNIN] Repository epel is listed more than once in the configuration
[ceph-xxx-osd03.gz01][WARNIN] Repository epel-debuginfo is listed more than once in the configuration
[ceph-xxx-osd03.gz01][WARNIN] Repository epel-source is listed more than once in the configuration
[ceph-xxx-osd03.gz01][DEBUG ] Resolving Dependencies
[ceph-xxx-osd03.gz01][DEBUG ] --> Running transaction check
[ceph-xxx-osd03.gz01][DEBUG ] ---> Package ceph-release.noarch 0:1-1.el7 will be erased
[ceph-xxx-osd03.gz01][DEBUG ] --> Finished Dependency Resolution
[ceph-xxx-osd03.gz01][DEBUG ]
[ceph-xxx-osd03.gz01][DEBUG ] Dependencies Resolved
[ceph-xxx-osd03.gz01][DEBUG ]
[ceph-xxx-osd03.gz01][DEBUG ] ================================================================================
[ceph-xxx-osd03.gz01][DEBUG ]  Package              Arch           Version            Repository         Size
[ceph-xxx-osd03.gz01][DEBUG ] ================================================================================
[ceph-xxx-osd03.gz01][DEBUG ] Removing:
[ceph-xxx-osd03.gz01][DEBUG ]  ceph-release         noarch         1-1.el7            installed         535
[ceph-xxx-osd03.gz01][DEBUG ]
[ceph-xxx-osd03.gz01][DEBUG ] Transaction Summary
[ceph-xxx-osd03.gz01][DEBUG ] ================================================================================
[ceph-xxx-osd03.gz01][DEBUG ] Remove  1 Package
[ceph-xxx-osd03.gz01][DEBUG ]
[ceph-xxx-osd03.gz01][DEBUG ] Installed size: 535
[ceph-xxx-osd03.gz01][DEBUG ] Downloading packages:
[ceph-xxx-osd03.gz01][DEBUG ] Running transaction check
[ceph-xxx-osd03.gz01][DEBUG ] Running transaction test
[ceph-xxx-osd03.gz01][DEBUG ] Transaction test succeeded
[ceph-xxx-osd03.gz01][DEBUG ] Running transaction
[ceph-xxx-osd03.gz01][DEBUG ]   Erasing    : ceph-release-1-1.el7.noarch                                  1/1
[ceph-xxx-osd03.gz01][DEBUG ] warning: /etc/yum.repos.d/ceph.repo saved as /etc/yum.repos.d/ceph.repo.rpmsave
[ceph-xxx-osd03.gz01][DEBUG ]   Verifying  : ceph-release-1-1.el7.noarch                                  1/1
[ceph-xxx-osd03.gz01][DEBUG ]
[ceph-xxx-osd03.gz01][DEBUG ] Removed:
[ceph-xxx-osd03.gz01][DEBUG ]   ceph-release.noarch 0:1-1.el7
[ceph-xxx-osd03.gz01][DEBUG ]
[ceph-xxx-osd03.gz01][DEBUG ] Complete!
[ceph-xxx-osd03.gz01][INFO  ] Running command: yum install -y https://download.ceph.com/rpm-jewel/el7/noarch/ceph-release-1-0.el7.noarch.rpm
[ceph-xxx-osd03.gz01][DEBUG ] Loaded plugins: fastestmirror, langpacks, priorities
[ceph-xxx-osd03.gz01][WARNIN] Repository epel is listed more than once in the configuration
[ceph-xxx-osd03.gz01][WARNIN] Repository epel-debuginfo is listed more than once in the configuration
[ceph-xxx-osd03.gz01][WARNIN] Repository epel-source is listed more than once in the configuration
[ceph-xxx-osd03.gz01][DEBUG ] Examining /var/tmp/yum-root-Y2Avp6/ceph-release-1-0.el7.noarch.rpm: ceph-release-1-1.el7.noarch
[ceph-xxx-osd03.gz01][DEBUG ] Marking /var/tmp/yum-root-Y2Avp6/ceph-release-1-0.el7.noarch.rpm to be installed
[ceph-xxx-osd03.gz01][DEBUG ] Resolving Dependencies
[ceph-xxx-osd03.gz01][DEBUG ] --> Running transaction check
[ceph-xxx-osd03.gz01][DEBUG ] ---> Package ceph-release.noarch 0:1-1.el7 will be installed
[ceph-xxx-osd03.gz01][DEBUG ] --> Finished Dependency Resolution
[ceph-xxx-osd03.gz01][DEBUG ]
[ceph-xxx-osd03.gz01][DEBUG ] Dependencies Resolved
[ceph-xxx-osd03.gz01][DEBUG ]
[ceph-xxx-osd03.gz01][DEBUG ] ================================================================================
[ceph-xxx-osd03.gz01][DEBUG ]  Package          Arch       Version     Repository                        Size
[ceph-xxx-osd03.gz01][DEBUG ] ================================================================================
[ceph-xxx-osd03.gz01][DEBUG ] Installing:
[ceph-xxx-osd03.gz01][DEBUG ]  ceph-release     noarch     1-1.el7     /ceph-release-1-0.el7.noarch     535
[ceph-xxx-osd03.gz01][DEBUG ]
[ceph-xxx-osd03.gz01][DEBUG ] Transaction Summary
[ceph-xxx-osd03.gz01][DEBUG ] ================================================================================
[ceph-xxx-osd03.gz01][DEBUG ] Install  1 Package
[ceph-xxx-osd03.gz01][DEBUG ]
[ceph-xxx-osd03.gz01][DEBUG ] Total size: 535
[ceph-xxx-osd03.gz01][DEBUG ] Installed size: 535
[ceph-xxx-osd03.gz01][DEBUG ] Downloading packages:
[ceph-xxx-osd03.gz01][DEBUG ] Running transaction check
[ceph-xxx-osd03.gz01][DEBUG ] Running transaction test
[ceph-xxx-osd03.gz01][DEBUG ] Transaction test succeeded
[ceph-xxx-osd03.gz01][DEBUG ] Running transaction
[ceph-xxx-osd03.gz01][DEBUG ]   Installing : ceph-release-1-1.el7.noarch                                  1/1
[ceph-xxx-osd03.gz01][DEBUG ]   Verifying  : ceph-release-1-1.el7.noarch                                  1/1
[ceph-xxx-osd03.gz01][DEBUG ]
[ceph-xxx-osd03.gz01][DEBUG ] Installed:
[ceph-xxx-osd03.gz01][DEBUG ]   ceph-release.noarch 0:1-1.el7
[ceph-xxx-osd03.gz01][DEBUG ]
[ceph-xxx-osd03.gz01][DEBUG ] Complete!
[ceph-xxx-osd03.gz01][WARNIN] ensuring that /etc/yum.repos.d/ceph.repo contains a high priority
[ceph-xxx-osd03.gz01][WARNIN] altered ceph.repo priorities to contain: priority=1
[ceph-xxx-osd03.gz01][INFO  ] Running command: yum -y install ceph ceph-radosgw
[ceph-xxx-osd03.gz01][DEBUG ] Loaded plugins: fastestmirror, langpacks, priorities
[ceph-xxx-osd03.gz01][WARNIN] Repository epel is listed more than once in the configuration
[ceph-xxx-osd03.gz01][WARNIN] Repository epel-debuginfo is listed more than once in the configuration
[ceph-xxx-osd03.gz01][WARNIN] Repository epel-source is listed more than once in the configuration
[ceph-xxx-osd03.gz01][DEBUG ] Loading mirror speeds from cached hostfile
[ceph-xxx-osd03.gz01][DEBUG ] 133 packages excluded due to repository priority protections
[ceph-xxx-osd03.gz01][DEBUG ] Package matching 1:ceph-10.2.10-0.el7.x86_64 already installed. Checking for update.
[ceph-xxx-osd03.gz01][DEBUG ] Package matching 1:ceph-radosgw-10.2.10-0.el7.x86_64 already installed. Checking for update.
[ceph-xxx-osd03.gz01][DEBUG ] Nothing to do
[ceph-xxx-osd03.gz01][INFO  ] Running command: ceph --version
[ceph-xxx-osd03.gz01][DEBUG ] ceph version 12.2.0 (32ce2a3ae5239ee33d6150705cdb24d43bab910c) luminous (rc)

1.2 拷贝 ceph 配置及秘钥

$ cd /etc/ceph/
$ ceph-deploy admin ceph-xxx-osd03.gz01
[ceph_deploy.conf][DEBUG ] found configuration file at: /root/.cephdeploy.conf
[ceph_deploy.cli][INFO  ] Invoked (1.5.39): /bin/ceph-deploy admin ceph-xxx-osd03.gz01
[ceph_deploy.cli][INFO  ] ceph-deploy options:
[ceph_deploy.cli][INFO  ]  username                      : None
[ceph_deploy.cli][INFO  ]  verbose                       : False
[ceph_deploy.cli][INFO  ]  overwrite_conf                : False
[ceph_deploy.cli][INFO  ]  quiet                         : False
[ceph_deploy.cli][INFO  ]  cd_conf                       : <ceph_deploy.conf.cephdeploy.Conf instance at 0x2ac9b90>
[ceph_deploy.cli][INFO  ]  cluster                       : ceph
[ceph_deploy.cli][INFO  ]  client                        : ['ceph-xxx-osd03.gz01']
[ceph_deploy.cli][INFO  ]  func                          : <function admin at 0x2a24c08>
[ceph_deploy.cli][INFO  ]  ceph_conf                     : None
[ceph_deploy.cli][INFO  ]  default_release               : False
[ceph_deploy.admin][DEBUG ] Pushing admin keys and conf to ceph-xxx-osd03.gz01
[ceph-xxx-osd03.gz01][DEBUG ] connected to host: ceph-xxx-osd03.gz01
[ceph-xxx-osd03.gz01][DEBUG ] detect platform information from remote host
[ceph-xxx-osd03.gz01][DEBUG ] detect machine type
[ceph-xxx-osd03.gz01][DEBUG ] write cluster configuration to /etc/ceph/{cluster}.conf

1.3 修改秘钥文件权限，保证有可读权限

sudo chmod +r /etc/ceph/ceph.client.admin.keyring

1.4 创建元数据服务器

$ ceph-deploy --overwrite-conf mds create ceph-xxx-osd03.gz01

[ceph_deploy.conf][DEBUG ] found configuration file at: /root/.cephdeploy.conf
[ceph_deploy.cli][INFO  ] Invoked (1.5.39): /bin/ceph-deploy --overwrite-conf mds create ceph-xxx-osd03.gz01
[ceph_deploy.cli][INFO  ] ceph-deploy options:
[ceph_deploy.cli][INFO  ]  username                      : None
[ceph_deploy.cli][INFO  ]  verbose                       : False
[ceph_deploy.cli][INFO  ]  overwrite_conf                : True
[ceph_deploy.cli][INFO  ]  subcommand                    : create
[ceph_deploy.cli][INFO  ]  quiet                         : False
[ceph_deploy.cli][INFO  ]  cd_conf                       : <ceph_deploy.conf.cephdeploy.Conf instance at 0xc61518>
[ceph_deploy.cli][INFO  ]  cluster                       : ceph
[ceph_deploy.cli][INFO  ]  func                          : <function mds at 0xc428c0>
[ceph_deploy.cli][INFO  ]  ceph_conf                     : None
[ceph_deploy.cli][INFO  ]  mds                           : [('ceph-xxx-osd03.gz01', 'ceph-xxx-osd03.gz01')]
[ceph_deploy.cli][INFO  ]  default_release               : False
[ceph_deploy.mds][DEBUG ] Deploying mds, cluster ceph hosts ceph-xxx-osd03.gz01:ceph-xxx-osd03.gz01
[ceph-xxx-osd03.gz01][DEBUG ] connected to host: ceph-xxx-osd03.gz01
[ceph-xxx-osd03.gz01][DEBUG ] detect platform information from remote host
[ceph-xxx-osd03.gz01][DEBUG ] detect machine type
[ceph_deploy.mds][INFO  ] Distro info: CentOS Linux 7.2.1511 Core
[ceph_deploy.mds][DEBUG ] remote host will use systemd
[ceph_deploy.mds][DEBUG ] deploying mds bootstrap to ceph-xxx-osd03.gz01
[ceph-xxx-osd03.gz01][DEBUG ] write cluster configuration to /etc/ceph/{cluster}.conf
[ceph-xxx-osd03.gz01][DEBUG ] create path if it doesn't exist
[ceph-xxx-osd03.gz01][INFO  ] Running command: ceph --cluster ceph --name client.bootstrap-mds --keyring /var/lib/ceph/bootstrap-mds/ceph.keyring auth get-or-create mds.ceph-xxx-osd03.gz01 osd allow rwx mds allow mon allow profile mds -o /var/lib/ceph/mds/ceph-ceph-xxx-osd03.gz01/keyring
[ceph-xxx-osd03.gz01][INFO  ] Running command: systemctl enable ceph-mds@ceph-xxx-osd03.gz01
[ceph-xxx-osd03.gz01][WARNIN] Created symlink from /etc/systemd/system/ceph-mds.target.wants/ceph-mds@ceph-xxx-osd03.gz01.service to /usr/lib/systemd/system/ceph-mds@.service.
[ceph-xxx-osd03.gz01][INFO  ] Running command: systemctl start ceph-mds@ceph-xxx-osd03.gz01
[ceph-xxx-osd03.gz01][INFO  ] Running command: systemctl enable ceph.target

2. 存储池

2.1 创建存储池数据

#ceph osd pool create cephfs_data <pg_num>

$ ceph osd pool create cephfs_data 128
pool 'cephfs_data' created

2.2 创建存储池元数据

#ceph osd pool create cephfs_metadata <pg_num>

$ ceph osd pool create cephfs_data 128
pool 'cephfs_metadata' created

2.3 查看存储池

$ ceph osd lspools
1 rbd,2 test_data,3 test_metadata,5 test,6 benmark_test,7 .rgw.root,8 default.rgw.control,9 default.rgw.meta,10 default.rgw.log,11 default.rgw.buckets.index,12 web-services,13 test_pool,15 cephfs_data,16 cephfs_metadata

3. 文件系统

3.1 创建文件系统

#ceph fs new <fs_name> cephfs_metadata cephfs_data

$ ceph fs new test_fs cephfs_metadata cephfs_data
new fs with metadata pool 16 and data pool 15

3.2 查看文件系统

$ ceph fs ls
name: test_fs, metadata pool: test_metadata, data pools: [test_data ]

4. mds 状态

4.1 查看 mds 状态

$ ceph mds stat
test_fs-1/1/1 up [test_fs:0]=ceph-bench-osd00=up:active}

说明：

  • e8 : e 标识 epoch，8 是 epoch 号
  • tstfs-1/1/1 up : tstfs是 cephfs 名字，后面的三个 1 分别是[mds_map.in/mds_map.up/mds_map.max_mds](http://mds_map.in/mds_map.up/mds_map.max_mds)，up是 cephfs 状态
  • {[tstfs:0]=mds-daemon-1=up:active} : [tstfs:0]指 tstfs 的 rank 0，mds-daemon-1是服务 tstfs 的 mds daemon name，up:active是 cephfs 的状态为 up & active
  • test_fs-1 是 active 的，它的 mds daemon 为 ceph-xxx-osd03.gz01
  • 又添加一个新的 mds daemon 后，它会处于 standby 状态，若前两个 mds daemon 出问题，它会顶替上去

5. 内核驱动挂载 ceph 文件系统

5.1 查看秘钥

$ cat /etc/ceph/ceph.client.admin.keyring
[client.admin]
key = AQBpxadZjXLcBxAArU8dYn75aAZYfdGdogYRYg==

5.2 创建目录

$ sudo mkdir /mnt/mycephfs

5.3 挂载文件系统

#指定用户名、密钥
#sudo mount -t {ip-address-of-monitor}:6789 /mycephfs -o name=xxxx,secret=xxxx

$ sudo mount -t ceph 10.1.178.32:6789:/ /mnt/mycephfs -o name=admin,secret=AQBpxadZjXLcBxAArU8dYn75aAZYfdGdogYRYg==
$ df -h
10.1.178.32:6789:/  201T  1.9T  199T   1% /mnt/mycephfs

6. 用户空间挂载 ceph 文件系统

6.1 安装 ceph-fuse

$ yum install ceph-fuse

6.2 创建目录

$ sudo mkdir /mnt/mycephfs-fuse

6.3 挂载文件系统

#Ceph 存储集群默认要求认证，需指定相应的密钥环文件
#sudo ceph-fuse -k keyring -m {ip-address-of-monitor}:6789 /mycephfs

$ sudo ceph-fuse -k /etc/ceph/ceph.client.admin.keyring -m 10.1.178.32:6789 /mnt/mycephfs-fuse
2017-11-15 14:26:45.323695 7fef1e1e2ec0 -1 init, newargv = 0x7fef29cb68a0 newargc=11ceph-fuse[3300741]:
starting ceph client

$ df -h
ceph-fuse 201T 1.9T 199T 1% /mnt/mycephfs-fuse