ceph手动安装 | 易学教程

本文主要讲述在无外网条件下安装ceph存储集群的过程。具体的安装环境如下：

[root@ceph001-node1 /]# lsb_release -a
LSB Version:    :core-4.1-amd64:core-4.1-noarch
Distributor ID: CentOS
Description:    CentOS Linux release 7.1.1503 (Core) 
Release:        7.1.1503
Codename:       Core

[root@ceph001-node1 /]# uname -a
Linux ceph001-node1 3.10.0-229.el7.x86_64 #1 SMP Fri Mar 6 11:36:42 
UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

这里采用了3台虚拟机：

主机IP	部署组件	主机名
10.133.134.211	node1	ceph001-node1
10.133.134.212	node2	ceph001-node2
10.133.134.213	node3	ceph001-node3

1. 下载软件安装包

因为我们是在无外网环境下安装ceph，因此我们需要在另外一台能够联网的机器上下载到对应的软件安装包。

注意：这里我们的下载软件包的主机环境最好与实际的安装环境一致，以免后面有些软件依赖出现问题

1.1 ADD KEYS

添加key到你的系统受信任keys列表来避免一些安全上的警告信息，对于major releases(例如hammer，jewel)请使用release.asc。

我们先从https://download.ceph.com/keys/release.asc 下载对应的release.asc文件，上传到集群的每一个节点上，执行如下命令：

sudo rpm --import './release.asc'

1.2 DOWNLOAD PACKAGES

假如你是需要在无网络访问的防火墙后安装ceph集群，在安装之前你必须要获得相应的安装包。

注意，你的连接外网的下载ceph安装包的机器环境与你实际安装ceph集群的环境最好一致，否则可能出现安装包版本不一致的情况而出现错误。。

RPM PACKAGES

先新建三个文件夹dependencies、ceph、ceph-deploy分别存放下面下载的安装包。

1) Ceph需要一些额外的第三方库。添加EPEL repository，执行如下命令：

sudo yum install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm

Ceph需要如下一些依赖包：

snappy
leveldb
gdisk
python-argparse
gperftools-libs

现在一台可以连接外网的主机上下载这些依赖包，存放在dependencies文件夹：

sudo yumdownloader snappy
sudo yumdownloader leveldb
sudo yumdownloader gdisk
sudo yumdownloader python-argparse
sudo yumdownloader gperftools-libs

2) 安装yum-plugin-priorities

sudo yum install yum-plugin-priorities

修改/etc/yum/pluginconf.d/priorities.conf文件：

[main]
enabled = 1

3) 通过如下的命令下载适当版本的ceph安装包

su -c 'rpm -Uvh https://download.ceph.com/rpm-{release-name}/{distro}/noarch/ceph-{version}.{distro}.noarch.rpm'

也可以直接到官方对应的网站去下载：https://download.ceph.com/

这里我们在CentOS7.1上配置如下：

su -c 'rpm -Uvh https://download.ceph.com/rpm-jewel/el7/noarch/ceph-release-1-0.el7.noarch.rpm'

修改/etc/yum.repos.d/ceph.repo文件，添加priority项：

下载ceph安装包：

yum clean packages            #先清除本地可能缓存的一些包
yum clean
yum repolist
yum makecache
sudo yum install --downloadonly --downloaddir=/ceph-cluster/packages/ceph ceph ceph-radosgw

NOTE1：这里我们目前就下载ceph,ceph-radosgw两个包，其依赖的一些包会自动下载下来。如果在实际安装中，仍缺少一些依赖包，我们可以通过yum search ${package-name} 查找到该包，然后再下载下来.

NOTE2: 上面这是下载最新版本的ceph安装包，如果下载其他版本，请携带上版本号

4）下载ceph-deploy安装包

这里我们是手动安装，可以不用下载。

sudo yum install --downloadonly --downloaddir=/ceph-cluster/packages/ceph-deploy ceph-deploy

5) 将上述的依赖包分别打包压缩称dependencies.tar.gz、ceph.tar.gz、ceph-deploy.tar.gz，并上传到集群的各个节点上来进行安装

2. 安装软件包

1）建立相应的构建目录

这里我们统一采用如下目录来完成整个集群的安装：

mkdir -p /ceph-cluster/build/script
mkdir -p /ceph-cluster/packages
mkdir -p /ceph-cluster/test
chmod 777 /ceph-cluster -R

2）关闭iptables及SELinux

可以将如下shell命令写成脚本来执行(disable-iptable-selinux.sh)：

systemctl stop firewalld.service 
systemctl disable firewalld.service 
setenforce 0 
sed -i 's/SELINUX=enforcing/SELINUX=disabled/' /etc/selinux/config

3）修改主机名

在上述所有节点上分别修改/etc/sysconfig/network文件，指定其主机名分别为ceph001-admin、ceph001-node1、ceph001-node2、ceph001-node3。例如：

[root@ceph001-node1 ~]# cat /etc/sysconfig/network
# Created by anaconda
NOZEROCONF=yes
HOSTNAME=ceph001-node1

再调用如下命令修改：

hostnamectl --static --transient --pretty set-hostname {host-name}

例如修改node1节点：

hostnamectl --static --transient --pretty set-hostname ceph001-node1

上述修改需要在系统下次重启时才生效。

此外，我们需要分别在每一个节点上执行hostname命令来立即更改主机名称。例如：

[root@ceph001-node1 ~]# sudo hostname ceph001-node1
[root@ceph001-node1 ~]# hostname -s
ceph001-node1

4) 修改/etc/hosts文件

分别修改3台宿主机节点上的/etc/hosts文件

# For Ceph Cluster
10.133.134.211	ceph001-node1
10.133.134.212	ceph001-node2
10.133.134.213	ceph001-node3

5) 通过主机名测试各节点之间是否联通

分别测试各个主机节点是否通过主机名ping通。例如：

[root@ceph001-node1 ~]# ping ceph001-node2
PING ceph001-node2 (10.133.134.212) 56(84) bytes of data.
64 bytes from ceph001-node2 (10.133.134.212): icmp_seq=1 ttl=64 time=0.869 ms
64 bytes from ceph001-node2 (10.133.134.212): icmp_seq=2 ttl=64 time=0.524 ms
64 bytes from ceph001-node2 (10.133.134.212): icmp_seq=3 ttl=64 time=0.363 ms
64 bytes from ceph001-node2 (10.133.134.212): icmp_seq=4 ttl=64 time=0.416 ms

6) 检查当前CentOS内核版本是否支持rbd，并装载rbd模块

modinfo rbd
modprobe rbd       #装载rbd模块
lsmod | grep rbd   #查看模块是否已经装载

7) 安装ntp，并配置ceph集群节点之间的时间同步

在各节点执行如下命令：

rpm –qa | grep ntp     #查看当前是否已经安装ntp
ps –ef | grep ntp      # 查看ntp服务器是否启动
ntpstat                 #查看当前的同步状态

在/etc/ntp.conf配置文件中配置时间同步服务器地址

参看：http://www.centoscn.com/CentosServer/test/2016/0129/6709.html

8) TTY

在CentOS及RHEL上，当你尝试执行ceph-deploy时，你也许会收到一个错误。假如requiretty在你的Ceph节点上默认被设置了的话，可以执行sudo visudo然后定位到Defaults requiretty的设置部分，将其改变为Defaults:ceph !requiretty或者直接将其注释掉

NOTE:假如直接修改/etc/sudoers，确保使用sudo visudo，而不要用其他的文本编辑器

9) 安装ceph软件包

安装pre-requisite 包

在所有节点上安装如下包:

snappy
leveldb
gdisk
python-argparse
gperftools-libs

执行如下命令进行安装：

sudo yum localinstall *.rpm

安装ceph包

在所有节点上执行如下命令安装ceph包：

sudo yum localinstall *.rpm

3. 建立集群

3.1 建立monitor

我们会在ceph001-node1，ceph001-node2,ceph001-node3上分别部署monitor.请在/ceph-cluster/build目录下完成构建。

在ceph001-node1上建立monitor

1) 生成monitor keyring

ceph-authtool --create-keyring ./ceph.mon.keyring --gen-key -n mon. --cap mon 'allow *'

查看生成的monitor keyring:

[root@ceph001-node1 build]# cat ./ceph.mon.keyring 
[mon.]
        key = AQCG0m5Z9AifFxAAreLxG7PXYPXRNyNlRzrGhQ==
        caps mon = "allow *"

2) 生成client.admin keyring

ceph-authtool --create-keyring /etc/ceph/ceph.client.admin.keyring --gen-key -n  client.admin --set-uid=0 --cap mon 'allow *' --cap osd 'allow *' --cap mds 'allow'

查看生成的client.admin keyring：

[root@ceph001-node1 build]# cat /etc/ceph/ceph.client.admin.keyring 
[client.admin]
        key = AQC61W5ZQlCOJRAAkXEE7xZtNiZwudgVqRtvuQ==
        auid = 0
        caps mds = "allow"
        caps mon = "allow *"
        caps osd = "allow *"

3) 生成用于集群初始化初始化的cluster.bootstrap keyring

cp ./ceph.mon.keyring ./cluster.bootstrap.keyring
ceph-authtool ./cluster.bootstrap.keyring --import-keyring  /etc/ceph/ceph.client.admin.keyring

查看生成的集群初始化keyring:

[root@ceph001-node1 build]# cat ./cluster.bootstrap.keyring 
[mon.]
        key = AQCG0m5Z9AifFxAAreLxG7PXYPXRNyNlRzrGhQ==
        caps mon = "allow *"
[client.admin]
        key = AQC61W5ZQlCOJRAAkXEE7xZtNiZwudgVqRtvuQ==
        auid = 0
        caps mds = "allow"
        caps mon = "allow *"
        caps osd = "allow *"

4) 生成初始化monmap

这里我们为了方便，一开始就将ceph001-node1,ceph001-node2,ceph001-node3同时作为初始化monitor。这可以减少操作步骤，但是必须要等到3个monitor同时建立完成之后monitor集群才能正常工作。

UUID=`uuidgen`
echo $UUID
monmaptool --create --add ceph001-node1 10.133.134.211 --add ceph001-node2 10.133.134.212 --add ceph001-node3 10.133.134.213 --fsid $UUID ./bootstrap-monmap.bin

查看生成的bootstrap-monmap.bin文件：

[root@ceph001-node1 build]# monmaptool --print ./bootstrap-monmap.bin 
monmaptool: monmap file ./bootstrap-monmap.bin
epoch 0
fsid ba47fcbc-b2f7-4071-9c37-be859d8c7e6e
last_changed 2017-07-19 12:27:17.374031
created 2017-07-19 12:27:17.374031
0: 10.133.134.211:6789/0 mon.ceph001-node1
1: 10.133.134.212:6789/0 mon.ceph001-node2
2: 10.133.134.213:6789/0 mon.ceph001-node3

5) 对ceph001-node1节点monitor初始化

sudo ceph-mon --mkfs -i ceph001-node1 --monmap ./bootstrap-monmap.bin --keyring ./cluster.bootstrap.keyring
touch /var/lib/ceph/mon/ceph-ceph001-node1/{done,sysvinit}  #在数据目录建立done及sysvinit两个文件

初始化完成后，查看数据目录：

[root@ceph001-node1 build]# ls -al /var/lib/ceph/mon/ceph-ceph001-node1/
total 4
drwxr-xr-x 3 root root 61 Jul 19 13:54 .
drwxr-xr-x 3 root root 31 Jul 19 13:54 ..
-rw-r--r-- 1 root root  0 Jul 19 13:54 done
-rw------- 1 root root 77 Jul 19 13:54 keyring
drwxr-xr-x 2 root root 80 Jul 19 13:54 store.db
-rw-r--r-- 1 root root  0 Jul 19 13:54 sysvinit

6）创建monitor进程配置文件

创建/etc/ceph/ceph.conf文件：

[global] 
fsid = ba47fcbc-b2f7-4071-9c37-be859d8c7e6e
mon_initial_members = ceph001-node1,ceph001-node2,ceph001-node3
mon_host = 10.133.134.211,10.133.134.212,10.133.134.213
auth_supported = cephx
auth_cluster_required = cephx
auth_client_required = cephx
auth_service_required = cephx
osd_pool_default_crush_rule = 2
osd_pool_default_size = 3
osd_pool_default_pg_num = 8
osd_pool_default_pgp_num = 8
osd_crush_chooseleaf_type = 0
mon_osd_full_ratio = 0.95
mon_osd_nearfull_ratio = 0.85

[mon.ceph001-node1] 
host = ceph001-node1
mon_data = /var/lib/ceph/mon/ceph-ceph001-node1
mon_addr = 10.133.134.211:6789

这里fsid为我们初始化monitor时所用的fsid，请参看第4步；mon_initial_members及mon_host为当前需要部署monitor的节点；[mon.ceph001-node1]节点为设置ceph001-node1节点的monitor的相关参数,使用时请注意对应.

7）启动monitor

sudo /etc/init.d/ceph start mon.ceph001-node1

输出信息如下：

[root@ceph001-node1 build]# sudo /etc/init.d/ceph start mon.ceph001-node1
=== mon.ceph001-node1 === 
Starting Ceph mon.ceph001-node1 on ceph001-node1...
Running as unit ceph-mon.ceph001-node1.1500444774.538123924.service.
Starting ceph-create-keys on ceph001-node1...

另外，如果当前Linux操作系统上ceph支持service的话，那么也可以用如下方式来启动：

# chkconfig --list

Note: This output shows SysV services only and does not include native
      systemd services. SysV configuration data might be overridden by native
      systemd configuration.

      If you want to list systemd services use 'systemctl list-unit-files'.
      To see services enabled on particular target use
      'systemctl list-dependencies [target]'.

ceph            0:off   1:off   2:off   3:off   4:off   5:off   6:off
netconsole      0:off   1:off   2:off   3:off   4:off   5:off   6:off
network         0:off   1:off   2:on    3:on    4:on    5:on    6:off

# service ceph restart mon

8) 查看monitor状态

此时，因为我们配置文件中同时指定了3个initial monitors，但是目前我们只启动了1个，因此monitor会出现如下状况：

[root@ceph001-node1 build]# ceph -s
2017-07-19 14:14:11.167910 7f7a10217700  0 -- :/1124433248 >> 10.133.134.213:6789/0 pipe(0x7f7a0c068550 sd=3 :0 s=1 pgs=0 cs=0 l=1 c=0x7f7a0c05bb80).fault
2017-07-19 14:14:14.151613 7f7a10116700  0 -- :/1124433248 >> 10.133.134.212:6789/0 pipe(0x7f7a00000c00 sd=4 :0 s=1 pgs=0 cs=0 l=1 c=0x7f7a00004ef0).fault
2017-07-19 14:14:17.152012 7f7a10217700  0 -- :/1124433248 >> 10.133.134.213:6789/0 pipe(0x7f7a000081b0 sd=3 :0 s=1 pgs=0 cs=0 l=1 c=0x7f7a0000c450).fault

9）分发mon keyring,mon map及admin keyring

这里我们在后续建立其他monitor/osd节点时，都会用到上述生成的/ceph-cluster/build/bootstrap-monmap.bin , /ceph-cluster/build/ceph.mon.keyring 以及 /etc/ceph/ceph.client.admin.keyring 三个文件，因此这里先把这三个文件分别推送到ceph001-node2,ceph001-node3节点的对应目录里。

采用如下命令拷贝文件：

scp /etc/ceph/ceph.client.admin.keyring root@10.133.134.212:/etc/ceph/
scp /ceph-cluster/build/bootstrap-monmap.bin root@10.133.134.212:/ceph-cluster/build/
scp /ceph-cluster/build/ceph.mon.keyring root@10.133.134.212:/ceph-cluster/build/


scp /etc/ceph/ceph.client.admin.keyring root@10.133.134.213:/etc/ceph/
scp /ceph-cluster/build/bootstrap-monmap.bin root@10.133.134.213:/ceph-cluster/build/
scp /ceph-cluster/build/ceph.mon.keyring root@10.133.134.213:/ceph-cluster/build/

在ceph001-node2上建立monitor

在上面我们已经完成了第一个monitor的初始化，建立第二个monitor就会简单很多了。并且我们已经有了用于初始化的bootstrap-monmap.bin以及ceph.mon.keyring。在/ceph-cluster/build目录下进行如下步骤：

1）初始化monitor

ceph-mon -i ceph001-node2 --mkfs --monmap ./bootstrap-monmap.bin --keyring ./ceph.mon.keyring

2) 初始化数据目录

ceph-mon --inject-monmap ./bootstrap-monmap.bin --mon-data /var/lib/ceph/mon/ceph-ceph001-node2/
touch /var/lib/ceph/mon/ceph-ceph001-node2/{done,sysvinit}

初始化后，查看monitor默认的数据目录:

[root@ceph001-node2 build]# ls -al /var/lib/ceph/mon/ceph-ceph001-node2/
total 4
drwxr-xr-x 3 root root  61 Jul 19 14:42 .
drwxr-xr-x 3 root root  31 Jul 19 14:41 ..
-rw-r--r-- 1 root root   0 Jul 19 14:42 done
-rw------- 1 root root  77 Jul 19 14:41 keyring
drwxr-xr-x 2 root root 111 Jul 19 14:42 store.db
-rw-r--r-- 1 root root   0 Jul 19 14:42 sysvinit

3) 修改ceph配置文件

可以从ceph001-node1节点将/etc/ceph/ceph.conf文件拷贝到ceph001-node2节点对应的目录，然后对[mon] section进行修改：

[global] 
fsid = ba47fcbc-b2f7-4071-9c37-be859d8c7e6e
mon_initial_members = ceph001-node1,ceph001-node2,ceph001-node3
mon_host = 10.133.134.211,10.133.134.212,10.133.134.213
auth_supported = cephx
auth_cluster_required = cephx
auth_client_required = cephx
auth_service_required = cephx
osd_pool_default_crush_rule = 2
osd_pool_default_size = 3
osd_pool_default_pg_num = 8
osd_pool_default_pgp_num = 8
osd_crush_chooseleaf_type = 0
mon_osd_full_ratio = 0.95
mon_osd_nearfull_ratio = 0.85

[mon.ceph001-node2] 
host = ceph001-node2
mon_data = /var/lib/ceph/mon/ceph-ceph001-node2
mon_addr = 10.133.134.212:6789

注意上面对[mon]段的修改。

3) 启动monitor

sudo /etc/init.d/ceph start mon.ceph001-node2

输出信息如下：

[root@ceph001-node2 build]# sudo /etc/init.d/ceph start mon.ceph001-node2
=== mon.ceph001-node2 === 
Starting Ceph mon.ceph001-node2 on ceph001-node2...
Running as unit ceph-mon.ceph001-node2.1500446828.301474392.service.
Starting ceph-create-keys on ceph001-node2...

另外，如果当前Linux操作系统上ceph支持service的话，那么也可以用如下方式来启动：

# chkconfig --list

Note: This output shows SysV services only and does not include native
      systemd services. SysV configuration data might be overridden by native
      systemd configuration.

      If you want to list systemd services use 'systemctl list-unit-files'.
      To see services enabled on particular target use
      'systemctl list-dependencies [target]'.

ceph            0:off   1:off   2:off   3:off   4:off   5:off   6:off
netconsole      0:off   1:off   2:off   3:off   4:off   5:off   6:off
network         0:off   1:off   2:on    3:on    4:on    5:on    6:off

# service ceph restart mon

4) 查看monitor状态

[root@ceph001-node2 build]# ceph -s
2017-07-19 14:47:11.705625 7f4f60124700  0 -- :/749124637 >> 10.133.134.213:6789/0 pipe(0x7f4f5c068550 sd=3 :0 s=1 pgs=0 cs=0 l=1 c=0x7f4f5c05bb80).fault
    cluster ba47fcbc-b2f7-4071-9c37-be859d8c7e6e
     health HEALTH_ERR
            no osds
            1 mons down, quorum 0,1 ceph001-node1,ceph001-node2
     monmap e1: 3 mons at {ceph001-node1=10.133.134.211:6789/0,ceph001-node2=10.133.134.212:6789/0,ceph001-node3=10.133.134.213:6789/0}
            election epoch 2, quorum 0,1 ceph001-node1,ceph001-node2
     osdmap e1: 0 osds: 0 up, 0 in
      pgmap v2: 0 pgs, 0 pools, 0 bytes data, 0 objects
            0 kB used, 0 kB / 0 kB avail

上面我们可以看到，尽管我们的mon_initial_members中设置了3个monitor，但是只要启动两个就达到了PAXOS协议的法定人数，monitor集群这时已经可以工作了。但是因为我们还没有建立OSD，因此当前集群状态为HEALTH_ERR

在ceph001-node3上建立monitor

与ceph001-node2节点建立monitor类似，这里直接简要列出：

1）初始化monitor及数据目录

ceph-mon -i ceph001-node3 --mkfs --monmap ./bootstrap-monmap.bin --keyring ./ceph.mon.keyring
ceph-mon --inject-monmap ./bootstrap-monmap.bin --mon-data /var/lib/ceph/mon/ceph-ceph001-node3/
touch /var/lib/ceph/mon/ceph-ceph001-node3/{done,sysvinit} 
ls -al /var/lib/ceph/mon/ceph-ceph001-node3/

2) 修改ceph配置文件

[global] 
fsid = ba47fcbc-b2f7-4071-9c37-be859d8c7e6e
mon_initial_members = ceph001-node1,ceph001-node2,ceph001-node3
mon_host = 10.133.134.211,10.133.134.212,10.133.134.213
auth_supported = cephx
auth_cluster_required = cephx
auth_client_required = cephx
auth_service_required = cephx
osd_pool_default_crush_rule = 2
osd_pool_default_size = 3
osd_pool_default_pg_num = 8
osd_pool_default_pgp_num = 8
osd_crush_chooseleaf_type = 0
mon_osd_full_ratio = 0.95
mon_osd_nearfull_ratio = 0.85

[mon.ceph001-node3] 
host = ceph001-node3
mon_data = /var/lib/ceph/mon/ceph-ceph001-node3
mon_addr = 10.133.134.213:6789

3) 启动及查看相应状态

sudo /etc/init.d/ceph start mon.ceph001-node3
ceph -s

另外，如果当前Linux操作系统上ceph支持service的话，那么也可以用如下方式来启动：

# chkconfig --list

Note: This output shows SysV services only and does not include native
      systemd services. SysV configuration data might be overridden by native
      systemd configuration.

      If you want to list systemd services use 'systemctl list-unit-files'.
      To see services enabled on particular target use
      'systemctl list-dependencies [target]'.

ceph            0:off   1:off   2:off   3:off   4:off   5:off   6:off
netconsole      0:off   1:off   2:off   3:off   4:off   5:off   6:off
network         0:off   1:off   2:on    3:on    4:on    5:on    6:off

# service ceph restart mon

4) 查看状态信息

通过如下的命令查看当前ceph集群的状态信息：

[root@ceph001-node3 build]# ceph -s
    cluster ba47fcbc-b2f7-4071-9c37-be859d8c7e6e
     health HEALTH_ERR
            no osds
     monmap e1: 3 mons at {ceph001-node1=10.133.134.211:6789/0,ceph001-node2=10.133.134.212:6789/0,ceph001-node3=10.133.134.213:6789/0}
            election epoch 4, quorum 0,1,2 ceph001-node1,ceph001-node2,ceph001-node3
     osdmap e1: 0 osds: 0 up, 0 in
      pgmap v2: 0 pgs, 0 pools, 0 bytes data, 0 objects
            0 kB used, 0 kB / 0 kB avail

如上所示，3个monitor已经正常启动，只是因为我们还未添加任何OSD，导致当前集群处于HEALTH_ERR状态。

3.2 建立OSD

我们目前会在每一个节点上部署3个OSD，总共3个节点则一共会部署9个OSD。首先查看我们当前的硬盘信息：

[root@ceph001-node1 build]# lsblk -a
NAME   MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sr0     11:0    1  436K  0 rom  
vda    253:0    0   20G  0 disk 
└─vda1 253:1    0   20G  0 part /
vdb    253:16   0  100G  0 disk 
vdc    253:32   0  100G  0 disk 
vdd    253:48   0   15G  0 disk

如上所示，我们有两个100G的硬盘vdb、vdc；另外还有一个15G的硬盘vdd。我们做如下规划：将vdb、vdc各分成两个50G分区，总共4个分区，其中前3个区用作当前OSD的数据目录,第4个分区保留；另外将vdd作为该节点上所有OSD的日志目录，分成4个分区。因此，这里我们首先对ceph001-node1,ceph001-node2,ceph001-node3三个节点进行分区：

parted -s /dev/vdb mklabel gpt
parted -s /dev/vdb mkpart primary 0% 50%
parted -s /dev/vdb mkpart primary 50% 100%

parted -s /dev/vdc mklabel gpt
parted -s /dev/vdc mkpart primary 0% 50% 
parted -s /dev/vdc mkpart primary 50% 100%

parted -s /dev/vdd mklabel gpt
parted -s /dev/vdd mkpart primary 0% 25% 
parted -s /dev/vdd mkpart primary 25% 50%
parted -s /dev/vdd mkpart primary 50% 75% 
parted -s /dev/vdd mkpart primary 75% 100%

查看分区后的状态：

[root@ceph001-node1 build]# lsblk -a 
NAME   MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sr0     11:0    1  436K  0 rom  
vda    253:0    0   20G  0 disk 
└─vda1 253:1    0   20G  0 part /
vdb    253:16   0  100G  0 disk 
├─vdb1 253:17   0   50G  0 part 
└─vdb2 253:18   0   50G  0 part 
vdc    253:32   0  100G  0 disk 
├─vdc1 253:33   0   50G  0 part 
└─vdc2 253:34   0   50G  0 part 
vdd    253:48   0   15G  0 disk 
├─vdd1 253:49   0  3.8G  0 part 
├─vdd2 253:50   0  3.8G  0 part 
├─vdd3 253:51   0  3.8G  0 part 
└─vdd4 253:52   0  3.8G  0 part

在ceph001-node1上建立3个OSD节点

1) 在ceph001-node1上建立3个OSD

使用脚本在ceph001-node1上建立OSD(请分步执行如下命令，减少可能的出错机会）：

chmod 777 ./script/ -R

./script/init_osd.sh vdb1 vdd1
cat /tmp/init_osd-{OSD_ID}.log
sudo /etc/init.d/ceph start osd.{OSD_ID}
ceph -s

./script/init_osd.sh vdb2 vdd2
cat /etc/init_osd-{OSD_ID}.log
sudo /etc/init.d/ceph start osd.{OSD_ID}
ceph -s

./script/init_osd.sh vdc1 vdd3
cat /etc/init_osd-{OSD_ID}.log
sudo /etc/init.d/ceph start osd.{OSD_ID}
ceph -s

上面请用对应的具体的OSD_ID值代替。输出信息类似于：

[root@ceph001-node1 build]# cat /tmp/init_osd-0.log
meta-data=/dev/vdb1              isize=2048   agcount=4, agsize=3276736 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=0        finobt=0
data     =                       bsize=4096   blocks=13106944, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0 ftype=0
log      =internal log           bsize=4096   blocks=6399, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
mkdir: created directory ‘/var/lib/ceph/osd/ceph-0’
########WWN#######
########WWN#######
 HDIO_DRIVE_CMD(identify) failed: Inappropriate ioctl for device
2017-07-19 15:41:43.124127 7ff5ec9d3880 -1 journal check: ondisk fsid 00000000-0000-0000-0000-000000000000 doesn't match expected 26383e0b-ea75-4ac2-b2e3-227560101a62, invalid (someone else's?) journal
 HDIO_DRIVE_CMD(identify) failed: Inappropriate ioctl for device
 HDIO_DRIVE_CMD(identify) failed: Inappropriate ioctl for device
 HDIO_DRIVE_CMD(identify) failed: Inappropriate ioctl for device
2017-07-19 15:41:43.245550 7ff5ec9d3880 -1 filestore(/var/lib/ceph/osd/ceph-0) could not find -1/23c2fcde/osd_superblock/0 in index: (2) No such file or directory
2017-07-19 15:41:43.358726 7ff5ec9d3880 -1 created object store /var/lib/ceph/osd/ceph-0 journal /dev/disk/by-id/virtio-06ef4ac3-ecec-45b5-8-part1 for osd.0 fsid ba47fcbc-b2f7-4071-9c37-be859d8c7e6e
2017-07-19 15:41:43.358784 7ff5ec9d3880 -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
2017-07-19 15:41:43.359121 7ff5ec9d3880 -1 created new key in keyring /var/lib/ceph/osd/ceph-0/keyring
added key for osd.0

另外，如果当前Linux操作系统的ceph支持service的话，也可以通过如下方式启动：

# chkconfig --list

Note: This output shows SysV services only and does not include native
      systemd services. SysV configuration data might be overridden by native
      systemd configuration.

      If you want to list systemd services use 'systemctl list-unit-files'.
      To see services enabled on particular target use
      'systemctl list-dependencies [target]'.

ceph            0:off   1:off   2:off   3:off   4:off   5:off   6:off
netconsole      0:off   1:off   2:off   3:off   4:off   5:off   6:off
network         0:off   1:off   2:on    3:on    4:on    5:on    6:off

# service ceph restart osd.{OSD_ID}

2）查看OSD的启动状况

ps -ef | grep osd
ceph -s

查看信息如下：

[root@ceph001-node1 build]# ceph -s
    cluster ba47fcbc-b2f7-4071-9c37-be859d8c7e6e
     health HEALTH_WARN
            too few PGs per OSD (0 < min 30)
     monmap e1: 3 mons at {ceph001-node1=10.133.134.211:6789/0,ceph001-node2=10.133.134.212:6789/0,ceph001-node3=10.133.134.213:6789/0}
            election epoch 4, quorum 0,1,2 ceph001-node1,ceph001-node2,ceph001-node3
     osdmap e10: 3 osds: 3 up, 3 in
      pgmap v14: 0 pgs, 0 pools, 0 bytes data, 0 objects
            101136 kB used, 149 GB / 149 GB avail
[root@ceph001-node1 build]# ps -ef | grep osd
root     17392     1  0 15:52 ?        00:00:00 /bin/bash -c ulimit -n 32768;  /usr/bin/ceph-osd -i 0 --pid-file /var/run/ceph/osd.0.pid -c /etc/ceph/ceph.conf --cluster ceph -f
root     17393 17392  0 15:52 ?        00:00:00 /usr/bin/ceph-osd -i 0 --pid-file /var/run/ceph/osd.0.pid -c /etc/ceph/ceph.conf --cluster ceph -f
root     17809     1  0 15:52 ?        00:00:00 /bin/bash -c ulimit -n 32768;  /usr/bin/ceph-osd -i 1 --pid-file /var/run/ceph/osd.1.pid -c /etc/ceph/ceph.conf --cluster ceph -f
root     17810 17809  0 15:52 ?        00:00:00 /usr/bin/ceph-osd -i 1 --pid-file /var/run/ceph/osd.1.pid -c /etc/ceph/ceph.conf --cluster ceph -f
root     18213     1  0 15:53 ?        00:00:00 /bin/bash -c ulimit -n 32768;  /usr/bin/ceph-osd -i 2 --pid-file /var/run/ceph/osd.2.pid -c /etc/ceph/ceph.conf --cluster ceph -f
root     18215 18213  0 15:53 ?        00:00:00 /usr/bin/ceph-osd -i 2 --pid-file /var/run/ceph/osd.2.pid -c /etc/ceph/ceph.conf --cluster ceph -f
root     18370 16930  0 15:53 pts/0    00:00:00 grep --color=auto osd
[root@ceph001-node1 build]# ceph -s
    cluster ba47fcbc-b2f7-4071-9c37-be859d8c7e6e
     health HEALTH_WARN
            too few PGs per OSD (0 < min 30)
     monmap e1: 3 mons at {ceph001-node1=10.133.134.211:6789/0,ceph001-node2=10.133.134.212:6789/0,ceph001-node3=10.133.134.213:6789/0}
            election epoch 4, quorum 0,1,2 ceph001-node1,ceph001-node2,ceph001-node3
     osdmap e10: 3 osds: 3 up, 3 in
      pgmap v14: 0 pgs, 0 pools, 0 bytes data, 0 objects
            101136 kB used, 149 GB / 149 GB avail

在ceph001-node2上建立3个OSD节点

与ceph001-node1类似，只需要注意少许参数的修改，这里不在赘述。

在ceph001-node3上建立3个OSD节点

与ceph001-node1类似，只需要注意少许参数的修改，这里不再赘述。

3.3 构建crush map

在上面3.1节建立好OSD之后，默认的crush map如下图所示：

[root@ceph001-node1 build]# ceph osd tree
ID WEIGHT  TYPE NAME              UP/DOWN REWEIGHT PRIMARY-AFFINITY 
-1 0.44989 root default                                             
-2 0.14996     host ceph001-node1                                   
 0 0.04999         osd.0               up  1.00000          1.00000 
 1 0.04999         osd.1               up  1.00000          1.00000 
 2 0.04999         osd.2               up  1.00000          1.00000 
-3 0.14996     host ceph001-node2                                   
 3 0.04999         osd.3               up  1.00000          1.00000 
 4 0.04999         osd.4               up  1.00000          1.00000 
 5 0.04999         osd.5               up  1.00000          1.00000 
-4 0.14996     host ceph001-node3                                   
 6 0.04999         osd.6               up  1.00000          1.00000 
 7 0.04999         osd.7               up  1.00000          1.00000 
 8 0.04999         osd.8               up  1.00000          1.00000

这不适用与我们的生产环境。下面我们就来构建我们自己的crush map.

1) 删除默认的crush map结构

for i in {0..8}; do ceph osd crush rm osd.$i; done
for i in {1..3}; do ceph osd crush rm ceph001-node$i; done
ceph osd tree

执行完后，当前的ceph集群视图如下：

[root@ceph001-node1 build]# ceph osd tree
ID WEIGHT TYPE NAME    UP/DOWN REWEIGHT PRIMARY-AFFINITY 
-1      0 root default                                   
 0      0 osd.0             up  1.00000          1.00000 
 1      0 osd.1             up  1.00000          1.00000 
 2      0 osd.2             up  1.00000          1.00000 
 3      0 osd.3             up  1.00000          1.00000 
 4      0 osd.4             up  1.00000          1.00000 
 5      0 osd.5             up  1.00000          1.00000 
 6      0 osd.6             up  1.00000          1.00000 
 7      0 osd.7             up  1.00000          1.00000 
 8      0 osd.8             up  1.00000          1.00000

2) 修改crush rule规则内容

ceph osd getcrushmap -o ./old_crushmap.bin
crushtool -d ./old_crushmap.bin -o ./old_crushmap.txt
cp old_crushmap.txt new_crushmap.txt

下面修改new_crushmap.txt:

# 在type 10 root下面添加逻辑拓扑中的bucket类型, 其中数值越大, 表示在crush map中的层级越大
type 11 osd-domain
type 12 host-domain
type 13 replica-domain
type 14 failure-domain
# 将crush map中所有的 alg straw2 修改为 alg starw

修改后重新设置到ceph集群中：

crushtool -c new_crushmap.txt -o new_crushmap.bin
ceph osd setcrushmap -i new_crushmap.bin
ceph osd crush dump

3) 重新构建crush map中的物理拓扑

请分步执行如下命令：

for i in {0..2}; do ceph osd crush create-or-move osd.$i 0.15 host=ceph001-node1  rack=rack-01 root=default; done

for i in {3..5}; do ceph osd crush create-or-move osd.$i 0.15 host=ceph001-node2  rack=rack-02 root=default; done

for i in {6..8}; do ceph osd crush create-or-move osd.$i 0.15 host=ceph001-node3  rack=rack-03 root=default; done

ceph osd tree

构建完成后，查看对应的物理拓扑结构：

[root@ceph001-node1 build]# ceph osd tree
ID WEIGHT  TYPE NAME                  UP/DOWN REWEIGHT PRIMARY-AFFINITY 
-1 1.34995 root default                                                 
-3 0.44998     rack rack-02                                             
-2 0.44998         host ceph001-node2                                   
 3 0.14999             osd.3               up  1.00000          1.00000 
 4 0.14999             osd.4               up  1.00000          1.00000 
 5 0.14999             osd.5               up  1.00000          1.00000 
-5 0.44998     rack rack-03                                             
-4 0.44998         host ceph001-node3                                   
 6 0.14999             osd.6               up  1.00000          1.00000 
 7 0.14999             osd.7               up  1.00000          1.00000 
 8 0.14999             osd.8               up  1.00000          1.00000 
-7 0.44998     rack rack-01                                             
-6 0.44998         host ceph001-node1                                   
 0 0.14999             osd.0               up  1.00000          1.00000 
 1 0.14999             osd.1               up  1.00000          1.00000 
 2 0.14999             osd.2               up  1.00000          1.00000

4）重新构建crush map中的逻辑拓扑

请分步执行如下命令：

ceph osd crush link ceph001-node1 host-domain=host-group-0-rack-01  replica-domain=replica-0 failure-domain=sata-00

ceph osd crush link ceph001-node2 host-domain=host-group-0-rack-02  replica-domain=replica-0 failure-domain=sata-00

ceph osd crush link ceph001-node3 host-domain=host-group-0-rack-03  replica-domain=replica-0 failure-domain=sata-00

ceph osd tree

构建完成后，查看对应的逻辑拓扑结构：

[root@ceph001-node1 build]# ceph osd tree
ID  WEIGHT  TYPE NAME                                UP/DOWN REWEIGHT PRIMARY-AFFINITY 
-10 1.34995 failure-domain sata-00                                                     
 -9 1.34995     replica-domain replica-0                                               
 -8 0.44998         host-domain host-group-0-rack-01                                   
 -6 0.44998             host ceph001-node1                                             
  0 0.14999                 osd.0                         up  1.00000          1.00000 
  1 0.14999                 osd.1                         up  1.00000          1.00000 
  2 0.14999                 osd.2                         up  1.00000          1.00000 
-11 0.44998         host-domain host-group-0-rack-02                                   
 -2 0.44998             host ceph001-node2                                             
  3 0.14999                 osd.3                         up  1.00000          1.00000 
  4 0.14999                 osd.4                         up  1.00000          1.00000 
  5 0.14999                 osd.5                         up  1.00000          1.00000 
-12 0.44998         host-domain host-group-0-rack-03                                   
 -4 0.44998             host ceph001-node3                                             
  6 0.14999                 osd.6                         up  1.00000          1.00000 
  7 0.14999                 osd.7                         up  1.00000          1.00000 
  8 0.14999                 osd.8                         up  1.00000          1.00000 
 -1 1.34995 root default                                                               
 -3 0.44998     rack rack-02                                                           
 -2 0.44998         host ceph001-node2                                                 
  3 0.14999             osd.3                             up  1.00000          1.00000 
  4 0.14999             osd.4                             up  1.00000          1.00000 
  5 0.14999             osd.5                             up  1.00000          1.00000 
 -5 0.44998     rack rack-03                                                           
 -4 0.44998         host ceph001-node3                                                 
  6 0.14999             osd.6                             up  1.00000          1.00000 
  7 0.14999             osd.7                             up  1.00000          1.00000 
  8 0.14999             osd.8                             up  1.00000          1.00000 
 -7 0.44998     rack rack-01                                                           
 -6 0.44998         host ceph001-node1                                                 
  0 0.14999             osd.0                             up  1.00000          1.00000 
  1 0.14999             osd.1                             up  1.00000          1.00000 
  2 0.14999             osd.2                             up  1.00000          1.00000

5）构建crush rule规则

ceph osd getcrushmap -o origin_crushmap.bin
crushtool -d origin_crushmap.bin -o origin_crushmap.txt
cp origin_crushmap.txt tobuild_crushmap.txt

修改tobuild_crushmap.txt文件,手动添加如下内容：

rule replicated_rule-5 {
     ruleset 5
     type replicated
     min_size 1
     max_size 10
     step take sata-00
     step choose firstn 1 type replica-domain
     step chooseleaf firstn 0 type host-domain 
     step emit
}

修改完成后，重新设置到ceph集群中。

crushtool -c tobuild_crushmap.txt -o tobuild_crushmap.bin

ceph osd setcrushmap -i tobuild_crushmap.bin

ceph osd crush dump

6) 创建pool, 并将pool绑定之指定crush_ruleset

ceph osd pool delete rbd rbd --yes-i-really-really-mean-it 

ceph osd pool create rbd-01 128 128

ceph osd pool set rbd-01 size 3

ceph osd pool set rbd-01 crush_ruleset 5

7) 使用rbd命令简单测试创建的pool是否能够正常使用

rbd create rbd-01/test-image --size 4096

rbd info rbd-01/test-image

rbd rm rbd-01/test-image

到此为止，crush map就已经构建完毕。

4. 构建RGW

4.1 在ceph001-node1上部署RGW

1) 创建存储池

这里直接执行创建存储池的脚本：

./script/create_pool.sh

ceph osd dump

创建存储池后，执行结果如下(部分打印信息)：

[root@ceph001-node1 build]# ceph osd dump
epoch 91
fsid ba47fcbc-b2f7-4071-9c37-be859d8c7e6e
created 2017-07-19 14:47:13.802418
modified 2017-07-19 17:11:50.806402
flags 
pool 1 'rbd-01' replicated size 3 min_size 2 crush_ruleset 5 object_hash rjenkins pg_num 128 pgp_num 128 last_change 61 flags hashpspool stripe_width 0
        removed_snaps [1~3]
pool 2 '.rgw' replicated size 3 min_size 2 crush_ruleset 5 object_hash rjenkins pg_num 8 pgp_num 8 last_change 76 flags hashpspool stripe_width 0
pool 3 '.rgw.root' replicated size 3 min_size 2 crush_ruleset 5 object_hash rjenkins pg_num 8 pgp_num 8 last_change 77 flags hashpspool stripe_width 0
pool 4 '.rgw.control' replicated size 3 min_size 2 crush_ruleset 5 object_hash rjenkins pg_num 8 pgp_num 8 last_change 78 flags hashpspool stripe_width 0
pool 5 '.rgw.gc' replicated size 3 min_size 2 crush_ruleset 5 object_hash rjenkins pg_num 8 pgp_num 8 last_change 79 flags hashpspool stripe_width 0
pool 6 '.log' replicated size 3 min_size 2 crush_ruleset 5 object_hash rjenkins pg_num 8 pgp_num 8 last_change 80 flags hashpspool stripe_width 0
pool 7 '.intent-log' replicated size 3 min_size 2 crush_ruleset 5 object_hash rjenkins pg_num 8 pgp_num 8 last_change 81 flags hashpspool stripe_width 0
pool 8 '.usage' replicated size 3 min_size 2 crush_ruleset 5 object_hash rjenkins pg_num 8 pgp_num 8 last_change 82 flags hashpspool stripe_width 0
pool 9 '.users' replicated size 3 min_size 2 crush_ruleset 5 object_hash rjenkins pg_num 8 pgp_num 8 last_change 83 flags hashpspool stripe_width 0
pool 10 '.users.email' replicated size 3 min_size 2 crush_ruleset 5 object_hash rjenkins pg_num 8 pgp_num 8 last_change 84 flags hashpspool stripe_width 0
pool 11 '.users.swift' replicated size 3 min_size 2 crush_ruleset 5 object_hash rjenkins pg_num 8 pgp_num 8 last_change 85 flags hashpspool stripe_width 0
pool 12 '.users.uid' replicated size 3 min_size 2 crush_ruleset 5 object_hash rjenkins pg_num 8 pgp_num 8 last_change 86 flags hashpspool stripe_width 0
pool 13 '.rgw.buckets' replicated size 3 min_size 2 crush_ruleset 5 object_hash rjenkins pg_num 256 pgp_num 256 last_change 87 flags hashpspool stripe_width 0
pool 14 '.rgw.buckets.index' replicated size 3 min_size 2 crush_ruleset 5 object_hash rjenkins pg_num 8 pgp_num 8 last_change 88 flags hashpspool stripe_width 0
pool 15 '.rgw.buckets.extra' replicated size 3 min_size 2 crush_ruleset 5 object_hash rjenkins pg_num 8 pgp_num 8 last_change 89 flags hashpspool stripe_width 0
max_osd 9

2）创建RGW秘钥并加入集群

# ceph-authtool --create-keyring /etc/ceph/ceph.client.radosgw.keyring --gen-key -n client.radosgw.ceph001-node1 --cap mon 'allow rwx' --cap osd 'allow rwx'

# ceph -k /etc/ceph/ceph.client.admin.keyring auth add client.radosgw.ceph001-node1 -i /etc/ceph/ceph.client.radosgw.keyring

# ceph auth list

3) 修改ceph配置文件

修改/etc/ceph/ceph.conf配置文件，在其中添加：

[client.radosgw.ceph001-node1]
host = ceph001-node1
log_file = /var/log/ceph/radosgw-ceph001-node1.log
rgw_s3_auth_use_keystone = False
rgw_frontends = civetweb port=7480
rgw_socket_path = /var/run/ceph/ceph.radosgw.ceph001-node1.sock
user = root
keyring = /etc/ceph/ceph.client.radosgw.keyring
rgw_override_bucket_index_max_shards = 0
rgw_swift_token_expiration = 86400
rgw_enable_usage_log = True
rgw_cache_lru_size = 10000
rgw_print_continue = False
rgw_cache_enabled = True
admin_socket = /var/run/ceph/radosgw-ceph001-node1.asok
rgw_thread_pool_size=512
rgw_num_rados_handles=512

4) 启动RGW

radosgw -c /etc/ceph/ceph.conf -n client.radosgw.ceph001-node1

查看是否启动成功：

[root@ceph001-node1 build]# netstat -lpn | grep radosgw
tcp        0      0 0.0.0.0:7480            0.0.0.0:*               LISTEN      21229/radosgw       
unix  2      [ ACC ]     STREAM     LISTENING     403819   21229/radosgw        /var/run/ceph/radosgw-ceph001-node1.asok

5）创建RADOS RGW admin用户并为其分配权限

radosgw-admin user create --uid=admin --display-name="admin"

radosgw-admin caps add --uid=admin --caps="buckets=*"
radosgw-admin caps add --uid=admin --caps="data=*"
radosgw-admin caps add --uid=admin --caps="metadata=*"
radosgw-admin caps add --uid=admin --caps="usage=*"
radosgw-admin caps add --uid=admin --caps="users=*"
radosgw-admin caps add --uid=admin --caps="zone=*"

至此，ceph001-node1节点的radosgw已经部署完成

4.2 在ceph001-node2上部署RGW

此处只需要创建相应的rgw用户并加入集群，然后配置ceph.conf文件，再启动rgw即可。下面是详细步骤：

1）创建RGW秘钥并加入集群

ceph-authtool --create-keyring /etc/ceph/ceph.client.radosgw.keyring --gen-key -n client.radosgw.ceph001-node2 --cap mon 'allow rwx' --cap osd 'allow rwx'

ceph -k /etc/ceph/ceph.client.admin.keyring auth add client.radosgw.ceph001-node2 -i /etc/ceph/ceph.client.radosgw.keyring

ceph auth list

2) 修改ceph配置文件

修改/etc/ceph/ceph.conf配置文件，在其中添加：

[client.radosgw.ceph001-node2]
host = ceph001-node2
log_file = /var/log/ceph/radosgw-ceph001-node2.log
rgw_s3_auth_use_keystone = False
rgw_frontends = civetweb port=7480
rgw_socket_path = /var/run/ceph/ceph.radosgw.ceph001-node2.sock
user = root
keyring = /etc/ceph/ceph.client.radosgw.keyring
rgw_override_bucket_index_max_shards = 0
rgw_swift_token_expiration = 86400
rgw_enable_usage_log = True
rgw_cache_lru_size = 10000
rgw_print_continue = False
rgw_cache_enabled = True
admin_socket = /var/run/ceph/radosgw-ceph001-node2.asok
rgw_thread_pool_size=512
rgw_num_rados_handles=512

3) 启动RGW

radosgw -c /etc/ceph/ceph.conf -n client.radosgw.ceph001-node2

查看是否启动成功：

[root@ceph001-node2 build]# netstat -lpn | grep radosgw
tcp        0      0 0.0.0.0:7480            0.0.0.0:*               LISTEN      9756/radosgw        
unix  2      [ ACC ]     STREAM     LISTENING     312548   9756/radosgw         /var/run/ceph/radosgw-ceph001-node2.asok

因为节点ceph001-node1已经创建好了admin账号以及初始化权限，所以之后的节点都不需要再进行创建了。

至此，节点ceph001-node2部署rgw完毕。

4.3 在ceph001-node3上部署RGW

此处只需要创建相应的rgw用户并加入集群，然后配置ceph.conf文件，再启动rgw即可。下面是详细步骤：

1）创建RGW秘钥并加入集群

ceph-authtool --create-keyring /etc/ceph/ceph.client.radosgw.keyring --gen-key -n client.radosgw.ceph001-node3 --cap mon 'allow rwx' --cap osd 'allow rwx'

ceph -k /etc/ceph/ceph.client.admin.keyring auth add client.radosgw.ceph001-node3 -i /etc/ceph/ceph.client.radosgw.keyring

ceph auth list

2) 修改ceph配置文件

修改/etc/ceph/ceph.conf配置文件，在其中添加：

[client.radosgw.ceph001-node3]
host = ceph001-node3
log_file = /var/log/ceph/radosgw-ceph001-node3.log
rgw_s3_auth_use_keystone = False
rgw_frontends = civetweb port=7480
rgw_socket_path = /var/run/ceph/ceph.radosgw.ceph001-node3.sock
user = root
keyring = /etc/ceph/ceph.client.radosgw.keyring
rgw_override_bucket_index_max_shards = 0
rgw_swift_token_expiration = 86400
rgw_enable_usage_log = True
rgw_cache_lru_size = 10000
rgw_print_continue = False
rgw_cache_enabled = True
admin_socket = /var/run/ceph/radosgw-ceph001-node3.asok
rgw_thread_pool_size=512
rgw_num_rados_handles=512

3) 启动RGW

radosgw -c /etc/ceph/ceph.conf -n client.radosgw.ceph001-node3

查看是否启动成功：

[root@ceph001-node3 build]# netstat -lpn | grep radosgw
tcp        0      0 0.0.0.0:7480            0.0.0.0:*               LISTEN      15626/radosgw       
unix  2      [ ACC ]     STREAM     LISTENING     326358   15626/radosgw        /var/run/ceph/radosgw-ceph001-node3.asok

因为节点ceph001-node1已经创建好了admin账号以及初始化权限，所以之后的节点都不需要再进行创建了。

至此，节点ceph001-node3部署rgw完毕。

最后，到此为止整个集群已经部署完毕.

5. 添加新的mon(附录）

有时候，我们在ceph运行了一段时间之后，需要添加新的mon。假设我们这里要在10.133.134.214这台主机上添加新的mon节点，此时我们可以参照如下步骤：

5.1 初始化主机

这里参照上面，将10.133.134.214这台主机的主机名设置为ceph001-node4，同时关闭相应的防火墙。请参考上文。

5.2 准备文件

我们需要从原来mon集群中获得monmap、mon.keyring以及admin.keyring文件，然后分发到ceph001-node4节点上。

1) 导出monmap

我们可以从原来老的mon集群中导出monmap:

# ceph mon getmap -o ./new_monmap.bin
got monmap epoch 43286

# monmaptool --print ./new_monmap.bin

2) 导出mon.keying

我们可以从原来老的mon集群中导出keying:

# ceph auth get mon. -o ./new_keyfile
# cat ./new_keyfile

3) 导出admin.keyring

admin.keyring即为原来集群的/etc/ceph/ceph.client.admin.keyring，此处直接获取即可。

获取完上面三个文件之后，直接分发到ceph001-node4节点即可。

5.3 初始化mon节点

1) 创建新的monmap

首先在原来new_monmap.bin的基础上创建新的monmap:

# monmaptool --create --add ceph001-node4 10.133.134.214 --fsid ba47fcbc-b2f7-4071-9c37-be859d8c7e6e --clobber ./new_monmap.bin

# monmaptool --print ./new_monmap.bin

2) 修改ceph.conf文件

修改配置文件/etc/ceph/ceph.conf:

[global]
fsid = ba47fcbc-b2f7-4071-9c37-be859d8c7e6e
mon_initial_members = ceph001-node1,ceph001-node2,ceph001-node3,ceph001-node4
mon_host = 10.133.134.211,10.133.134.212,10.133.134.213,10.133.134.214 
auth_supported = cephx
auth_cluster_required = cephx
auth_client_required = cephx
auth_service_required = cephx
osd_pool_default_crush_rule = 2
osd_pool_default_size = 2
osd_pool_default_pg_num = 8
osd_pool_default_pgp_num = 8
osd_crush_chooseleaf_type = 0
[mon.ceph001-node4]
host = ceph001-node4
mon_data = /var/lib/ceph/mon/ceph-ceph001-node4
mon_addr = 10.133.134.214:6789

3) 创建新的monitor fs

# ceph-mon -i ceph001-node4 --mkfs --monmap ./new_monmap.bin --keyring  ./new_keyfile
ceph-mon: set fsid to ba47fcbc-b2f7-4071-9c37-be859d8c7e6e
ceph-mon: created monfs at /var/lib/ceph/mon/ceph-ceph001-node4 for mon.ceph001-node4

4) 注入monmap

这里我们将上面生成的new_monmap.bin注入到monitor fs中：

# ceph-mon --inject-monmap ./new_monmap.bin --mon-data  /var/lib/ceph/mon/ceph-ceph001-node4/

5) 启动monitor

# sudo /etc/init.d/ceph start mon.ceph001-node4

这里注意需要将上面的admin.keyring也拷贝到/etc/ceph/ceph.client.admin.keyring。

来源：oschina

链接：https://my.oschina.net/u/4395239/blog/4262961

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