ceph在CentOS7.2部署教程

客官°小女子只卖身不卖艺 2022-04-22 04:10 270阅读 0赞

系统

[root@ceph-1 ~]# cat /etc/redhat-release 
    CentOS Linux release 7.2.1511 (Core)

主机

<table> 
 <thead> 
  <tr> 
   <th>hostname</th> 
   <th>ip</th> 
   <th>功能</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td>ceph-1</td> 
   <td>10.39.47.63</td> 
   <td>deploy、mon<em>1、osd</em>1</td> 
  </tr> 
  <tr> 
   <td>ceph-2</td> 
   <td>10.39.47.64</td> 
   <td>mon<em>1、osd</em>1</td> 
  </tr> 
  <tr> 
   <td>ceph-3</td> 
   <td>10.39.47.65</td> 
   <td>mon<em>1、osd</em>1</td> 
  </tr> 
 </tbody> 
</table>

主机硬盘

[root@ceph-1 ~]# lsblk 
    NAME   MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
    vda    253:0    0  20G  0 disk 
    └─vda1 253:1    0  20G  0 part /
    vdb    253:16   0   4G  0 disk [SWAP]
    vdc    253:32   0  80G  0 disk

--------------------

安装`wget ntp vim`工具

yum -y install wget ntp vim

添加host

[root@ceph-1 ~]# cat /etc/hosts
    ...
    10.39.47.63 ceph-1
    10.39.47.64 ceph-2
    10.39.47.65 ceph-3

--------------------

如果以前安装失败需要环境清理

ps aux|grep ceph |awk '{print $2}'|xargs kill -9
    ps -ef|grep ceph
    #确保此时所有ceph进程都已经关闭！！！如果没有关闭，多执行几次。
    umount /var/lib/ceph/osd/*
    rm -rf /var/lib/ceph/osd/*
    rm -rf /var/lib/ceph/mon/*
    rm -rf /var/lib/ceph/mds/*
    rm -rf /var/lib/ceph/bootstrap-mds/*
    rm -rf /var/lib/ceph/bootstrap-osd/*
    rm -rf /var/lib/ceph/bootstrap-rgw/*
    rm -rf /var/lib/ceph/tmp/*
    rm -rf /etc/ceph/*
    rm -rf /var/run/ceph/*

--------------------

## 需要在每个主机上执行以下指令 ##

**修改yum源**

yum clean all
    curl http://mirrors.aliyun.com/repo/Centos-7.repo >/etc/yum.repos.d/CentOS-Base.repo
    curl http://mirrors.aliyun.com/repo/epel-7.repo >/etc/yum.repos.d/epel.repo 
    sed -i '/aliyuncs/d' /etc/yum.repos.d/CentOS-Base.repo
    sed -i '/aliyuncs/d' /etc/yum.repos.d/epel.repo
    yum makecache

增加ceph的源

vim /etc/yum.repos.d/ceph.repo
    ##内容如下
    [ceph]
    name=ceph
    baseurl=http://mirrors.163.com/ceph/rpm-jewel/el7/x86_64/
    gpgcheck=0
    [ceph-noarch]
    name=cephnoarch
    baseurl=http://mirrors.163.com/ceph/rpm-jewel/el7/noarch/
    gpgcheck=0

安装ceph客户端

yum makecache
    yum install ceph ceph-radosgw rdate -y

关闭selinux&firewalld

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

同步各个节点时间

yum -y install rdate
    rdate -s time-a.nist.gov
    echo rdate -s time-a.nist.gov >> /etc/rc.d/rc.local 
    chmod +x /etc/rc.d/rc.local

--------------------

## 开始部署 ##

在部署节点(ceph-1)安装ceph-deploy，下文的部署节点统一指ceph-1

[root@ceph-1 ~]# yum -y install ceph-deploy
    [root@ceph-1 ~]# ceph-deploy --version 
    1.5.39
    [root@ceph-1 ~]# ceph -v 
    ceph version 10.2.11 (e4b061b47f07f583c92a050d9e84b1813a35671e)

设置免密码登录

[root@ceph-1 cluster]# ssh-keygen 
    Generating public/private rsa key pair.
    Enter file in which to save the key (/root/.ssh/id_rsa): 
    Created directory '/root/.ssh'.
    Enter passphrase (empty for no passphrase): 
    Enter same passphrase again: 
    Your identification has been saved in /root/.ssh/id_rsa.
    Your public key has been saved in /root/.ssh/id_rsa.pub.
    The key fingerprint is:
    54:f8:9b:25:56:3b:b1:ce:fc:6d:c5:61:b1:55:79:49 root@ceph-1
    The key's randomart image is:
    +--[ RSA 2048]----+
    |         ..   .E=|
    |        ..  o  +o|
    |        .. . +  =|
    |       .  + =  + |
    |        S. O ....|
    |          o +   o|
    |             . ..|
    |              . o|
    |               . |
    +-----------------+

[root@ceph-1 cluster]# ssh-copy-id 10.39.47.63
    /usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
    /usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys
    Warning: Permanently added '10.39.47.63' (ECDSA) to the list of known hosts.
    root@10.39.47.63's password: 
    
    Number of key(s) added: 1
    
    Now try logging into the machine, with:   "ssh '10.39.47.63'"
    and check to make sure that only the key(s) you wanted were added.
    
    [root@ceph-1 cluster]# ssh-copy-id 10.39.47.64
    /usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
    /usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys
    Warning: Permanently added '10.39.47.64' (ECDSA) to the list of known hosts.
    root@10.39.47.64's password: 
    
    Number of key(s) added: 1
    
    Now try logging into the machine, with:   "ssh '10.39.47.64'"
    and check to make sure that only the key(s) you wanted were added.
    
    [root@ceph-1 cluster]# ssh-copy-id 10.39.47.65
    /usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
    /usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys
    Warning: Permanently added '10.39.47.65' (ECDSA) to the list of known hosts.
    root@10.39.47.65's password: 
    
    Number of key(s) added: 1
    
    Now try logging into the machine, with:   "ssh '10.39.47.65'"
    and check to make sure that only the key(s) you wanted were added.

验证

[root@ceph-1 cluster]# ssh 10.39.47.65
    Warning: Permanently added '10.39.47.65' (ECDSA) to the list of known hosts.
    Last login: Fri Nov  2 10:06:39 2018 from 10.4.95.63
    [root@ceph-3 ~]#

--------------------

在部署节点创建部署目录并开始部署

[root@ceph-1 ~]# mkdir cluster
    [root@ceph-1 ~]# cd cluster/
    [root@ceph-1 cluster]# ceph-deploy new ceph-1 ceph-2 ceph-3

执行完之后生成一下文件

[root@ceph-1 cluster]# ls -l 
    total 16
    -rw-r--r-- 1 root root  235 Nov  2 10:40 ceph.conf
    -rw-r--r-- 1 root root 4879 Nov  2 10:40 ceph-deploy-ceph.log
    -rw------- 1 root root   73 Nov  2 10:40 ceph.mon.keyring

根据自己的IP配置向ceph.conf中添加public\_network，并稍微增大mon之间时差允许范围(默认为0.05s，现改为2s)：

[root@ceph-1 cluster]# echo public_network=10.39.47.0/24 >> ceph.conf
    [root@ceph-1 cluster]# echo mon_clock_drift_allowed = 2 >> ceph.conf
    [root@ceph-1 cluster]# cat ceph.conf 
    [global]
    fsid = 4a3e86f0-1511-4ad7-9f69-b435ae16dc28
    mon_initial_members = ceph-1, ceph-2, ceph-3
    mon_host = 10.39.47.63,10.39.47.64,10.39.47.65
    auth_cluster_required = cephx
    auth_service_required = cephx
    auth_client_required = cephx
    
    public_network=10.39.47.0/24
    mon_clock_drift_allowed = 2

开始部署monitor

[root@ceph-1 cluster] ceph-deploy mon create-initial
    //执行成功之后显示
    [root@ceph-1 cluster]# ls -l 
    total 56
    -rw------- 1 root root   113 Nov  2 10:45 ceph.bootstrap-mds.keyring
    -rw------- 1 root root    71 Nov  2 10:45 ceph.bootstrap-mgr.keyring
    -rw------- 1 root root   113 Nov  2 10:45 ceph.bootstrap-osd.keyring
    -rw------- 1 root root   113 Nov  2 10:45 ceph.bootstrap-rgw.keyring
    -rw------- 1 root root   129 Nov  2 10:45 ceph.client.admin.keyring
    -rw-r--r-- 1 root root   292 Nov  2 10:43 ceph.conf
    -rw-r--r-- 1 root root 27974 Nov  2 10:45 ceph-deploy-ceph.log
    -rw------- 1 root root    73 Nov  2 10:40 ceph.mon.keyring

查看集群状态

[root@ceph-1 cluster]# ceph -s
        cluster 4a3e86f0-1511-4ad7-9f69-b435ae16dc28
         health HEALTH_ERR
                no osds
         monmap e1: 3 mons at {ceph-1=10.39.47.63:6789/0,ceph-2=10.39.47.64:6789/0,ceph-3=10.39.47.65:6789/0}
                election epoch 6, quorum 0,1,2 ceph-1,ceph-2,ceph-3
         osdmap e1: 0 osds: 0 up, 0 in
                flags sortbitwise,require_jewel_osds
          pgmap v2: 64 pgs, 1 pools, 0 bytes data, 0 objects
                0 kB used, 0 kB / 0 kB avail
                      64 creating

开始部署OSD

ceph-deploy --overwrite-conf osd prepare ceph-1:/dev/vdc  ceph-2:/dev/vdc  ceph-3:/dev/vdc  --zap-disk
    ceph-deploy --overwrite-conf osd activate ceph-1:/dev/vdc1 ceph-2:/dev/vdc1  ceph-3:/dev/vdc1

部署完成之后查看集群状态

[root@ceph-1 cluster]# ceph -s 
        cluster 4a3e86f0-1511-4ad7-9f69-b435ae16dc28
         health HEALTH_OK
         monmap e1: 3 mons at {ceph-1=10.39.47.63:6789/0,ceph-2=10.39.47.64:6789/0,ceph-3=10.39.47.65:6789/0}
                election epoch 6, quorum 0,1,2 ceph-1,ceph-2,ceph-3
         osdmap e14: 3 osds: 3 up, 3 in
                flags sortbitwise,require_jewel_osds
          pgmap v28: 64 pgs, 1 pools, 0 bytes data, 0 objects
                322 MB used, 224 GB / 224 GB avail
                      64 active+clean

查看osd

[root@ceph-1 cluster]# ceph osd tree
    ID WEIGHT  TYPE NAME       UP/DOWN REWEIGHT PRIMARY-AFFINITY 
    -1 0.21959 root default                                      
    -2 0.07320     host ceph-1                                   
     0 0.07320         osd.0        up  1.00000          1.00000 
    -3 0.07320     host ceph-2                                   
     1 0.07320         osd.1        up  1.00000          1.00000 
    -4 0.07320     host ceph-3                                   
     2 0.07320         osd.2        up  1.00000          1.00000

查看pool有多种方式  
这个rdb pool默认创建的pool

[root@ceph-1 cluster]# rados lspools
    rbd

[root@ceph-1 cluster]# ceph osd lspools
    0 rbd,

--------------------

创建POOL

[root@ceph-1 cluster]# ceph osd pool create testpool 64
    pool 'testpool' created
    [root@ceph-1 cluster]# ceph osd lspools
    0 rbd,1 testpool,

参考:  
[INSTALLATION (CEPH-DEPLOY)][INSTALLATION _CEPH-DEPLOY]  
[Ceph 快速部署(Centos7+Jewel)][Ceph _Centos7_Jewel]  
[ceph学习之pool][ceph_pool]

[INSTALLATION _CEPH-DEPLOY]: http://docs.ceph.com/docs/master/start/
[Ceph _Centos7_Jewel]: http://xuxiaopang.com/2016/10/09/ceph-quick-install-el7-jewel/
[ceph_pool]: https://www.cnblogs.com/netmouser/p/6878885.html