$ apt-cache search ceph ceph - distributed storage ceph-common - common utilities to mount and interact with a ceph filesystem ceph-common-dbg - debugging symbols for ceph-common ceph-dbg - debugging symbols for ceph ceph-fs-common - common utilities to mount and interact with a ceph filesystem ceph-fs-common-dbg - debugging symbols for ceph-fs-common ceph-mds-dbg - debugging symbols for ceph gceph - Graphical ceph cluster status utility gceph-dbg - debugging symbols for gceph libcephfs-dev - Ceph distributed file system client library (development files) libcephfs1 - Ceph distributed file system client library libcephfs1-dbg - debugging symbols for libcephfs1 librados-dev - RADOS distributed object store client library (development files) librados2 - RADOS distributed object store client library librados2-dbg - debugging symbols for librados2 librbd-dev - RADOS block device client library (development files) librbd1 - RADOS block device client library librbd1-dbg - debugging symbols for librbd1 ceph-mds - distributed filesystem service ceph-resource-agents - OCF-compliant resource agents for Ceph obsync - synchronize data between cloud object storage providers or a local directory python-ceph - Python libraries for the Ceph distributed filesystem $ sudo apt-get install ceph $ sudo apt-get install ceph-mds
创建配置文件 /etc/ceph/ceph.conf
$ vim /etc/ceph/ceph.conf
[global]
# For version 0.55 and beyond, you must explicitly enable
# or disable authentication with "auth" entries in [global].
auth cluster required = cephx
auth service required = cephx
auth client required = cephx
[osd]
osd journal size = 1000
#The following assumes ext4 filesystem.
filestore xattr use omap = true
# For Bobtail (v 0.56) and subsequent versions, you may
# add settings for mkcephfs so that it will create and mount
# the file system on a particular OSD for you. Remove the comment `#`
# character for the following settings and replace the values
# in braces with appropriate values, or leave the following settings
# commented out to accept the default values. You must specify the
# --mkfs option with mkcephfs in order for the deployment script to
# utilize the following settings, and you must define the 'devs'
# option for each osd instance; see below.
#osd mkfs type = {fs-type}
#osd mkfs options {fs-type} = {mkfs options} # default for xfs is "-f"
#osd mount options {fs-type} = {mount options} # default mount option is "rw,noatime"
# For example, for ext4, the mount option might look like this:
#osd mkfs options ext4 = user_xattr,rw,noatime
# Execute $ hostname to retrieve the name of your host,
# and replace ubuntu with the name of your host.
# For the monitor, replace 192.168.6.2 with the IP
# address of your host.
[mon.a]
host = ubuntu
mon addr = 192.168.6.2:6789
[osd.0]
host = ubuntu
# For Bobtail (v 0.56) and subsequent versions, you may
# add settings for mkcephfs so that it will create and mount
# the file system on a particular OSD for you. Remove the comment `#`
# character for the following setting for each OSD and specify
# a path to the device if you use mkcephfs with the --mkfs option.
#devs = {path-to-device}
[osd.1]
host = ubuntu
#devs = {path-to-device}
[mds.a]
host = ubuntu
创建目录
sudo mkdir -p /var/lib/ceph/osd/ceph-0 sudo mkdir -p /var/lib/ceph/osd/ceph-1 sudo mkdir -p /var/lib/ceph/mon/ceph-a sudo mkdir -p /var/lib/ceph/mds/ceph-a
创建key文件
$ cd /etc/ceph $ sudo mkcephfs -a -c /etc/ceph/ceph.conf -k ceph.keyring
创建key文件过程如下
$ sudo mkcephfs -a -c /etc/ceph/ceph.conf -k ceph.keyring temp dir is /tmp/mkcephfs.4rUAn1MJYV preparing monmap in /tmp/mkcephfs.4rUAn1MJYV/monmap /usr/bin/monmaptool --create --clobber --add a 192.168.6.2:6789 --print /tmp/mkcephfs.4rUAn1MJYV/monmap /usr/bin/monmaptool: monmap file /tmp/mkcephfs.4rUAn1MJYV/monmap /usr/bin/monmaptool: generated fsid a5afe011-bfde-4784-8d3d-e488418897d6 epoch 0 fsid a5afe011-bfde-4784-8d3d-e488418897d6 last_changed 2013-04-10 18:05:46.409761 created 2013-04-10 18:05:46.409761 0: 192.168.6.2:6789/0 mon.a /usr/bin/monmaptool: writing epoch 0 to /tmp/mkcephfs.4rUAn1MJYV/monmap (1 monitors) === osd.0 === 2013-04-10 18:05:46.899898 7f8b26ec8780 -1 filestore(/var/lib/ceph/osd/ceph-0) limited size xattrs -- filestore_xattr_use_omap enabled 2013-04-10 18:05:47.303918 7f8b26ec8780 -1 filestore(/var/lib/ceph/osd/ceph-0) could not find 23c2fcde/osd_superblock/0//-1 in index: (2) No such file or directory 2013-04-10 18:05:47.658550 7f8b26ec8780 -1 created object store /var/lib/ceph/osd/ceph-0 journal /var/lib/ceph/osd/ceph-0/journal for osd.0 fsid a5afe011-bfde-4784-8d3d-e488418897d6 2013-04-10 18:05:47.659360 7f8b26ec8780 -1 auth: error reading file: /var/lib/ceph/osd/ceph-0/keyring: can't open /var/lib/ceph/osd/ceph-0/keyring: (2) No such file or directory 2013-04-10 18:05:47.659489 7f8b26ec8780 -1 created new key in keyring /var/lib/ceph/osd/ceph-0/keyring === osd.1 === 2013-04-10 18:05:48.039253 7f27289be780 -1 filestore(/var/lib/ceph/osd/ceph-1) limited size xattrs -- filestore_xattr_use_omap enabled 2013-04-10 18:05:48.338222 7f27289be780 -1 filestore(/var/lib/ceph/osd/ceph-1) could not find 23c2fcde/osd_superblock/0//-1 in index: (2) No such file or directory 2013-04-10 18:05:48.734861 7f27289be780 -1 created object store /var/lib/ceph/osd/ceph-1 journal /var/lib/ceph/osd/ceph-1/journal for osd.1 fsid a5afe011-bfde-4784-8d3d-e488418897d6 2013-04-10 18:05:48.734992 7f27289be780 -1 auth: error reading file: /var/lib/ceph/osd/ceph-1/keyring: can't open /var/lib/ceph/osd/ceph-1/keyring: (2) No such file or directory 2013-04-10 18:05:48.735294 7f27289be780 -1 created new key in keyring /var/lib/ceph/osd/ceph-1/keyring === mds.a === creating private key for mds.a keyring /var/lib/ceph/mds/ceph-a/keyring creating /var/lib/ceph/mds/ceph-a/keyring Building generic osdmap from /tmp/mkcephfs.4rUAn1MJYV/conf /usr/bin/osdmaptool: osdmap file '/tmp/mkcephfs.4rUAn1MJYV/osdmap' /usr/bin/osdmaptool: writing epoch 1 to /tmp/mkcephfs.4rUAn1MJYV/osdmap Generating admin key at /tmp/mkcephfs.4rUAn1MJYV/keyring.admin creating /tmp/mkcephfs.4rUAn1MJYV/keyring.admin Building initial monitor keyring added entity mds.a auth auth(auid = 18446744073709551615 key=AQB8OWVR0JMKMhAAZNnl4D2JkWIppS7gkdYkhw== with 0 caps) added entity osd.0 auth auth(auid = 18446744073709551615 key=AQB7OWVRIFdNJxAAHjgfc+J1uVTMj4uVLtTSaQ== with 0 caps) added entity osd.1 auth auth(auid = 18446744073709551615 key=AQB8OWVROCLPKxAAJ/Jim86K7Ip1PGnCw3Fb/g== with 0 caps) === mon.a === /usr/bin/ceph-mon: created monfs at /var/lib/ceph/mon/ceph-a for mon.a placing client.admin keyring in ceph.keyring $ ls ceph.conf ceph.keyring
启动ceph
$ sudo service ceph -a start $ sudo ceph health
启动过程如下
$ sudo service ceph -a start === mon.a === Starting Ceph mon.a on ubuntu... starting mon.a rank 0 at 192.168.6.2:6789/0 mon_data /var/lib/ceph/mon/ceph-a fsid a5afe011-bfde-4784-8d3d-e488418897d6 === mds.a === Starting Ceph mds.a on ubuntu... starting mds.a at :/0 === osd.0 === Starting Ceph osd.0 on ubuntu... starting osd.0 at :/0 osd_data /var/lib/ceph/osd/ceph-0 /var/lib/ceph/osd/ceph-0/journal === osd.1 === Starting Ceph osd.1 on ubuntu... starting osd.1 at :/0 osd_data /var/lib/ceph/osd/ceph-1 /var/lib/ceph/osd/ceph-1/journal $ sudo ceph health HEALTH_OK
$ sudo mkdir /mnt/ceph $ sudo mount -t ceph 192.168.6.2:6789:/ /mnt/ceph
查看文件系统的挂在情况
$ df -T Filesystem Type 1K-blocks Used Available Use% Mounted on /dev/mapper/ubuntu-root ext4 49263424 8860876 37900100 19% / udev devtmpfs 2014956 4 2014952 1% /dev tmpfs tmpfs 809808 1612 808196 1% /run none tmpfs 5120 0 5120 0% /run/lock none tmpfs 2024516 0 2024516 0% /run/shm none tmpfs 102400 0 102400 0% /run/user /dev/vda1 ext2 233191 80600 140150 37% /boot 192.168.6.2:6789:/ ceph 98526208 22726656 75799552 24% /mnt/ceph
尝试创建一个文件
$ sudo touch /mnt/ceph/hello
CentOS 6.4
rpm --import 'https://ceph.com/git/?p=ceph.git;a=blob_plain;f=keys/release.asc' rpm -Uvh http://ceph.com/rpm-bobtail/el6/x86_64/ceph-release-1-0.el6.noarch.rpm yum install ceph
配置文件，可以参考/usr/share/doc/ceph/sample.ceph.conf，或者复制后修改
[global]
# For version 0.55 and beyond, you must explicitly enable
# or disable authentication with "auth" entries in [global].
auth cluster required = cephx
auth service required = cephx
auth client required = cephx
[osd]
osd journal size = 1000
#The following assumes ext4 filesystem.
filestore xattr use omap = true
# For Bobtail (v 0.56) and subsequent versions, you may
# add settings for mkcephfs so that it will create and mount
# the file system on a particular OSD for you. Remove the comment `#`
# character for the following settings and replace the values
# in braces with appropriate values, or leave the following settings
# commented out to accept the default values. You must specify the
# --mkfs option with mkcephfs in order for the deployment script to
# utilize the following settings, and you must define the 'devs'
# option for each osd instance; see below.
#osd mkfs type = {fs-type}
#osd mkfs options {fs-type} = {mkfs options} # default for xfs is "-f"
#osd mount options {fs-type} = {mount options} # default mount option is "rw,noatime"
# For example, for ext4, the mount option might look like this:
#osd mkfs options ext4 = user_xattr,rw,noatime
# Execute $ hostname to retrieve the name of your host,
# and replace {hostname} with the name of your host.
# For the monitor, replace {ip-address} with the IP
# address of your host.
[mon.a]
host = {hostname}
mon addr = {ip-address}:6789
[osd.0]
host = {hostname}
# For Bobtail (v 0.56) and subsequent versions, you may
# add settings for mkcephfs so that it will create and mount
# the file system on a particular OSD for you. Remove the comment `#`
# character for the following setting for each OSD and specify
# a path to the device if you use mkcephfs with the --mkfs option.
#devs = {path-to-device}
[osd.1]
host = {hostname}
#devs = {path-to-device}
[mds.a]
host = {hostname}
# mkcephfs -a -c /etc/ceph/ceph.conf -k ceph.keyring
rpm --import 'https://ceph.com/git/?p=ceph.git;a=blob_plain;f=keys/release.asc' rpm -Uvh http://ceph.com/rpm-bobtail/el6/x86_64/ceph-release-1-0.el6.noarch.rpm yum install ceph
rpm --import 'https://ceph.com/git/?p=ceph.git;a=blob_plain;f=keys/release.asc' rpm -Uvh http://ceph.com/rpm-bobtail/el6/x86_64/ceph-release-1-0.el6.noarch.rpm yum install ceph
rpm --import 'https://ceph.com/git/?p=ceph.git;a=blob_plain;f=keys/release.asc' rpm -Uvh http://ceph.com/rpm-bobtail/el6/x86_64/ceph-release-1-0.el6.noarch.rpm yum install ceph-fuse
从服务器复制ceph.keyring到客户端
scp -a root@ceph-server:/etc/ceph/ceph.keyring /etc/ceph/
mkdir /mnt/cephfs/ ceph-fuse -m 192.168.6.2:6789 /mnt/cephfs/
mount -t ceph 192.168.6.2:6789:/ /mnt/cephfs
原文出处：Netkiller 系列 手札
本文作者：陈景峯
转载请与作者联系，同时请务必标明文章原始出处和作者信息及本声明。
