Ceph的搭建与配置步骤
这篇文章主要讲解了“Ceph的搭建与配置步骤”，文中的讲解内容简单清晰，易于学习与理解，下面请大家跟着小编的思路慢慢深入，一起来研究和学习“Ceph的搭建与配置步骤”吧！
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Ceph 搭建与配置笔记
平台：VirtualBox 4.3.12
虚拟机：CentOS 6.5 Linux 2.6.32-504.3.3.el6.x86_64
（1）准备工作
修改主机名 配置 IP
注：以下步骤需要按情况对store01和store02分别配置
[root@store01 ~]# vim /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0 TYPE=Ethernet UUID=82e3956c-6850-426a-afd7-977a26a77dab ONBOOT=yes NM_CONTROLLED=yes BOOTPROTO=static IPADDR=192.168.1.179 NETMASK=255.255.255.0 GATEWAY=192.168.1.1 HWADDR=08:00:27:65:4B:DD DEFROUTE=yes PEERDNS=yes PEERROUTES=yes IPV4_FAILURE_FATAL=yes IPV6INIT=no NAME="System eth0" [root@store01 ~]# ifconfig eth0 eth0 Link encap:Ethernet HWaddr 08:00:27:65:4B:DD inet addr:192.168.1.179 Bcast:192.168.127.255 Mask:255.255.128.0 inet6 addr: fe80::a00:27ff:fe65:4bdd/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:75576 errors:0 dropped:0 overruns:0 frame:0 TX packets:41422 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:88133010 (84.0 MiB) TX bytes:4529474 (4.3 MiB) [root@store01 ~]# cat /etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 192.168.1.179 store01 192.168.1.190 store02
配置 NTP 时间同步
[root@store01 ~]# yum install ntp ntpdate [root@store01 ~]# service ntpd start Starting ntpd: [ OK ] [root@store01 ~]# chkconfig ntpd on [root@store01 ~]# netstat -tunlp |grep 123 udp 0 0 192.168.1.179:123 0.0.0.0:* 12254/ntpd udp 0 0 127.0.0.1:123 0.0.0.0:* 12254/ntpd udp 0 0 0.0.0.0:123 0.0.0.0:* 12254/ntpd udp 0 0 fe80::a00:27ff:fe65:4bdd:123 :::* 12254/ntpd udp 0 0 ::1:123 :::* 12254/ntpd udp 0 0 :::123 :::* 12254/ntpd [root@store01 ~]# ntpq -p remote refid st t when poll reach delay offset jitter ============================================================================== +gus.buptnet.edu 202.112.31.197 3 u 7 64 377 115.339 4.700 46.105 *dns2.synet.edu. 202.118.1.46 2 u 69 64 373 44.619 1.680 6.667 [root@store02 ~]# yum install ntp ntpdate [root@store02 ~]# vim /etc/ntp.conf server store01 iburst [root@store02 ~]# service ntpd start Starting ntpd: [ OK ] [root@store02 ~]# chkconfig ntpd on [root@store02 ~]# ntpq -p remote refid st t when poll reach delay offset jitter ============================================================================== store01 202.112.10.36 4 u 56 64 1 0.412 0.354 0.000 [root@store02 ~]# netstat -tunlp |grep 123 udp 0 0 192.168.1.190:123 0.0.0.0:* 12971/ntpd udp 0 0 127.0.0.1:123 0.0.0.0:* 12971/ntpd udp 0 0 0.0.0.0:123 0.0.0.0:* 12971/ntpd udp 0 0 fe80::a00:27ff:fead:71b:123 :::* 12971/ntpd udp 0 0 ::1:123 :::* 12971/ntpd udp 0 0 :::123 :::* 12971/ntpd
关闭 SELinux IPTables
[root@store01 ~]# /etc/init.d/iptables stop iptables: Setting chains to policy ACCEPT: filter [ OK ] iptables: Flushing firewall rules: [ OK ] iptables: Unloading modules: [ OK ] [root@store01 ~]# /etc/init.d/ip6tables stop ip6tables: Setting chains to policy ACCEPT: filter [ OK ] ip6tables: Flushing firewall rules: [ OK ] ip6tables: Unloading modules: [ OK ] [root@store01 ~]# chkconfig iptables off [root@store01 ~]# chkconfig ip6tables off [root@store01 ~]# setenforce 0 [root@store01 ~]# vim /etc/selinux/config # This file controls the state of SELinux on the system. # SELINUX= can take one of these three values: # enforcing - SELinux security policy is enforced. # permissive - SELinux prints warnings instead of enforcing. # disabled - No SELinux policy is loaded. SELINUX=disabled # SELINUXTYPE= can take one of these two values: # targeted - Targeted processes are protected, # mls - Multi Level Security protection.
设置 root 用户 ssh 无密码访问（参考本博客另一篇博文）
（2）安装Ceph
添加源（Ceph Version：0.72）
# vim /etc/yum.repos.d/ceph.repo
[ceph] name=Ceph packages for $basearch baseurl=http://ceph.com/rpm-emperor/el6/$basearch enabled=1 gpgcheck=1 type=rpm-md gpgkey=https://ceph.com/git/?p=ceph.git;a=blob_plain;f=keys/release.asc [ceph-noarch] name=Ceph noarch packages baseurl=http://ceph.com/rpm-emperor/el6/noarch enabled=1 gpgcheck=1 type=rpm-md gpgkey=https://ceph.com/git/?p=ceph.git;a=blob_plain;f=keys/release.asc [ceph-source] name=Ceph source packages baseurl=http://ceph.com/rpm-emperor/el6/SRPMS enabled=1 gpgcheck=1 type=rpm-md gpgkey=https://ceph.com/git/?p=ceph.git;a=blob_plain;f=keys/release.asc
安装Ceph
[root@store01 ~]# yum install ceph ceph-deploy [root@store01 ~]# ceph-deploy --version 1.5.11 [root@store01 ~]# ceph --version ceph version 0.72.2 (a913ded2ff138aefb8cb84d347d72164099cfd60) [root@store02 ~]# yum install ceph
（3）配置Ceph
[root@store01 ~]# mkdir my-cluster
[root@store01 ~]# cd my-cluster/
[root@store01 my-cluster]# ls
[root@store01 my-cluster]# ceph-deploy new store01
[ceph_deploy.conf][DEBUG ] found configuration file at: /root/.cephdeploy.conf
[ceph_deploy.cli][INFO ] Invoked (1.5.11): /usr/bin/ceph-deploy new store01
[ceph_deploy.new][DEBUG ] Creating new cluster named ceph
[ceph_deploy.new][DEBUG ] Resolving host store01
[ceph_deploy.new][DEBUG ] Monitor store01 at 192.168.1.179
[ceph_deploy.new][INFO ] making sure passwordless SSH succeeds
[ceph_deploy.new][DEBUG ] Monitor initial members are ['store01']
[ceph_deploy.new][DEBUG ] Monitor addrs are ['192.168.1.179']
[ceph_deploy.new][DEBUG ] Creating a random mon key...
[ceph_deploy.new][DEBUG ] Writing initial config to ceph.conf...
[ceph_deploy.new][DEBUG ] Writing monitor keyring to ceph.mon.keyring...
[root@store01 my-cluster]# ls
ceph.conf ceph.log ceph.mon.keyring
[root@store01 my-cluster]# cat ceph.conf
[global]
auth_service_required = cephx
filestore_xattr_use_omap = true
auth_client_required = cephx
auth_cluster_required = cephx
mon_host = 192.168.1.179
mon_initial_members = store01
fsid = b45a03be-3abf-4736-8475-f238e1f2f479
[root@store01 my-cluster]# vim ceph.conf
[global]
auth_service_required = cephx
filestore_xattr_use_omap = true
auth_client_required = cephx
auth_cluster_required = cephx
mon_host = 192.168.1.179
mon_initial_members = store01
fsid = b45a03be-3abf-4736-8475-f238e1f2f479
osd pool default size = 2
[root@store01 my-cluster]# ceph-deploy mon create-initial
[root@store01 my-cluster]# ll
total 28
-rw-r--r-- 1 root root 72 Dec 29 10:34 ceph.bootstrap-mds.keyring
-rw-r--r-- 1 root root 72 Dec 29 10:34 ceph.bootstrap-osd.keyring
-rw-r--r-- 1 root root 64 Dec 29 10:34 ceph.client.admin.keyring
-rw-r--r-- 1 root root 257 Dec 29 10:34 ceph.conf
-rw-r--r-- 1 root root 5783 Dec 29 10:34 ceph.log
-rw-r--r-- 1 root root 73 Dec 29 10:33 ceph.mon.keyring
[root@store01 my-cluster]# ceph-deploy disk list store01 store02
[ceph_deploy.conf][DEBUG ] found configuration file at: /root/.cephdeploy.conf
[ceph_deploy.cli][INFO ] Invoked (1.5.11): /usr/bin/ceph-deploy disk list store01 store02
[store01][DEBUG ] connected to host: store01
[store01][DEBUG ] detect platform information from remote host
[store01][DEBUG ] detect machine type
[ceph_deploy.osd][INFO ] Distro info: CentOS 6.6 Final
[ceph_deploy.osd][DEBUG ] Listing disks on store01...
[store01][DEBUG ] find the location of an executable
[store01][INFO ] Running command: /usr/sbin/ceph-disk list
[store01][DEBUG ] /dev/sda :
[store01][DEBUG ] /dev/sda1 other, ext4, mounted on /boot
[store01][DEBUG ] /dev/sda2 other, LVM2_member
[store01][DEBUG ] /dev/sdb other, unknown
[store01][DEBUG ] /dev/sdc other, unknown
[store01][DEBUG ] /dev/sr0 other, unknown
[store02][DEBUG ] connected to host: store02
[store02][DEBUG ] detect platform information from remote host
[store02][DEBUG ] detect machine type
[ceph_deploy.osd][INFO ] Distro info: CentOS 6.6 Final
[ceph_deploy.osd][DEBUG ] Listing disks on store02...
[store02][DEBUG ] find the location of an executable
[store02][INFO ] Running command: /usr/sbin/ceph-disk list
[store02][DEBUG ] /dev/sda :
[store02][DEBUG ] /dev/sda1 other, ext4, mounted on /boot
[store02][DEBUG ] /dev/sda2 other, LVM2_member
[store02][DEBUG ] /dev/sdb other, unknown
[store02][DEBUG ] /dev/sdc other, unknown
[store02][DEBUG ] /dev/sr0 other, unknown
[root@store01 my-cluster]# ceph-deploy disk zap store01:sd{b,c}
[root@store01 my-cluster]# ceph-deploy disk zap store02:sd{b,c}
[root@store01 my-cluster]# ceph-deploy osd create store01:sd{b,c}
[root@store01 my-cluster]# ceph-deploy osd create store02:sd{b,c}
[root@store01 my-cluster]# ceph status
cluster e5c2f7f3-2c8a-4ae0-af26-ab0cf5f67343
health HEALTH_OK
monmap e1: 1 mons at {store01=192.168.1.179:6789/0}, election epoch 1, quorum 0 store01
osdmap e18: 4 osds: 4 up, 4 in
pgmap v28: 192 pgs, 3 pools, 0 bytes data, 0 objects
136 MB used, 107 GB / 107 GB avail
192 active+clean
[root@store01 my-cluster]# ceph osd tree
# id weight type name up/down reweight
-1 0.12 root default
-2 0.06 host store01
1 0.03 osd.1 up 1
0 0.03 osd.0 up 1
-3 0.06 host store02
3 0.03 osd.3 up 1
2 0.03 osd.2 up 1（4）创建池与用户
格式：
ceph osd pool set {pool-name} pg_num
注：pg_num选择标准
Less than 5 OSDs set pg_num to 128
Between 5 and 10 OSDs set pg_num to 512
Between 10 and 50 OSDs set pg_num to 4096
If you have more than 50 OSDs, you need to understand the tradeoffs and how to calculate the pg_num value by yourself
[root@store01 my-cluster]# ceph osd pool create volumes 128
pool 'volumes' created
[root@store01 my-cluster]# ceph osd pool create images 128
pool 'images' created
[root@store01 my-cluster]# ceph osd lspools
0 data,1 metadata,2 rbd,3 volumes,4 images,
ceph auth get-or-create client.cinder mon 'allow r' osd 'allow class-read object_prefix rbd_children, allow rwx pool=volumes, allow rx pool=images'
ceph auth get-or-create client.glance mon 'allow r' osd 'allow class-read object_prefix rbd_children, allow rwx pool=images'至此 Ceph配置完毕
可以将此Ceph配置到OpenStack的Cinder、Nova以及Glance服务中作为后端。
感谢各位的阅读，以上就是“Ceph的搭建与配置步骤”的内容了，经过本文的学习后，相信大家对Ceph的搭建与配置步骤这一问题有了更深刻的体会，具体使用情况还需要大家实践验证。这里是创新互联，小编将为大家推送更多相关知识点的文章，欢迎关注！
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