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Editor to share with you how to configure mds in ceph, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

1. Add the mds configuration # vi ceph.confs [mds.a] host = hostname2. Create a directory for the MDS metadata server

# mkdir-p / var/lib/ceph/mds/ceph-a3. Create a key for the bootstrap-mds client

# ceph-authtool-- create-keyring / var/lib/ceph/bootstrap-mds/ceph.keyring-- gen-key-n client.bootstrap-mds

4. Create a bootstrap-mds client in the ceph auth library and grant permission to add the previously created key

# ceph auth add client.bootstrap-mds mon 'allow profile bootstrap-mds'-I / var/lib/ceph/bootstrap-mds/ceph.keyring

5. Create a mds.a user in the ceph auth library, and grant permissions and create a key, which is saved in the / var/lib/ceph/mds/ceph-a/keyring file

# ceph--name client.bootstrap-mds-- keyring / var/lib/ceph/bootstrap-mds/ceph.keyring auth get-or-create mds.an osd 'allow rwx' mds' allow' mon' allow profile mds'-o / var/lib/ceph/mds/ceph-a/keyring

6. Start the mds service process

# service ceph start mds.a=== mds.a=== Starting Ceph mds.an on DEV-L0003542...starting mds.an at: / upload ceph mds stat # View mds node status e4: 1-1-1 up {0=a=up:active} 7. View cluster status

# ceph-scluster 1c7ec934-1595-11e5-aa3f-06aed00006d5health HEALTH_WARN 1360 pgs degraded; 4820 pgs stuck unclean Recovery 62423up 138288 objects degraded (45.140%) monmap e1: 1 mons at {mon1=10.20.15.156:6789/0}, election epoch 2, quorum 0 mon1mdsmap e4: 1-1-1 up {0=a=up:active} osdmap e143: 7 osds: 7 up, 7 inpgmap v5095: 4820 pgs, 14 pools, 9919 kB data, 46096 objects9251 MB used, 150 GB / 159 GB avail62423/138288 objects degraded (45.140%) 667 active1360 active+degraded2793 active+remappedclient io 3058 Bhand wr, 5 op/s7. Client mount cephfs (fuse mode)

# yum install ceph-fuse-y # mkdir / mycephfs# ceph-fuse-m 10.20.15.156pur6789 ~ / mycephfs# df-hFilesystem Size Used Avail Use% Mounted on/dev/mapper/Volgroup00-LV_root 16G 3.9G 11G 27% / tmpfs 1.9G 01.9G 0% / dev/shm/dev/vda1 194M 34M 150M 19% / boot/dev/sda 100G 1.9G 99G 2% / mnt/share/dev/vdb 10G 1.3G 8.8G 13% / var/ Lib/ceph/osd/ceph-0/dev/vdc 10G 1.2G 8.8G 12% / var/lib/ceph/osd/ceph-1/dev/vdd 10G 1.2G 8.9G 12% / var/lib/ceph/osd/ceph-5/dev/sda 100G 1.9G 99G 2% / var/lib/ceph/osd/ceph-6ceph-fuse 160G 9.1G 151G 6% / root/mycephfs8. Direct mount of kernel (higher version of ceph modul is required for kernel)

# mount-t ceph 10.20.15.156:6789://mycephfs-v-oname=admin,secretfile=/etc/ceph/ceph.client.admin.keyring9. The metadata information of cephfs is in metadata pool by default. # rados ls-p metadata609.00000000mds0_sessionmap608.00000000601.00000000602.00000000mds0_inotable1.00000000.inode200.00000000604.00000000605.00000000mds_anchortablemds_snaptable600.00000000603.00000000100.00000000200.00000001606.00000000607.00000000100.00000000.inode1.00000000 and above are all the contents of this article "how to configure mds in ceph". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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