【ceph】Centos 7.1 安裝Ceph

一、環境介紹

環境：三臺Centos 7.1的主機

二、安裝前準備（所有主機）

2.1 關閉防火墻和selinux

關閉 SELINUX
sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config
setenforce 0

關閉防火墻
systemctl stop firewalld.service 

systemctl disable firewalld.service 

2.2 修改hosts文件

vi /etc/hosts
192.168.209.100 admin
192.168.209.100 node1
192.168.209.101 node2
192.168.209.102 node3
測試：
[root@localhost /]# ping node1
PING node1 (192.168.209.100) 56(84) bytes of data.
64 bytes from admin (192.168.209.100): icmp_seq=1 ttl=64 time=0.096 ms
^C
--- node1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.096/0.096/0.096/0.000 ms
[root@localhost /]# ping node2
PING node2 (192.168.209.101) 56(84) bytes of data.
64 bytes from node2 (192.168.209.101): icmp_seq=1 ttl=64 time=0.317 ms
^C
--- node2 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.317/0.317/0.317/0.000 ms
[root@localhost /]# ping node3
PING node3 (192.168.209.102) 56(84) bytes of data.
64 bytes from node3 (192.168.209.102): icmp_seq=1 ttl=64 time=0.323 ms
^C
--- node3 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.323/0.323/0.323/0.000 ms
[root@localhost /]# 

2.3 修改時區并安裝NTP

修改時區
cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime

安裝NTP
yum -y install ntp
systemctl enable ntpd
systemctl start ntpd
ntpstat

2.4 安裝epel倉庫(重要，不安裝可能后面安裝ceph會失敗)

rpm -Uvh https://dl.fedoraproject.org/pub/epel/7Server/x86_64/Packages/e/epel-release-7-11.noarch.rpm
這個包在寫這個博文的時候是可用的，過段時間可能會失效，如果失效了請大家按照這個路徑去找，release的包，不一定是7-11的，不過沒關系，安裝了這個包之后，后面的安裝一般沒有問題。

2.5 添加ceph的yum源

添加之前請先確認mirrors.163.com/ceph/rpm-hammer/el7/x86_64/是否存在，如果不存在，那么需要修改一下網址
vi ceph.repo
[ceph]
name=Ceph noarch packages
baseurl=http://mirrors.163.com/ceph/rpm-hammer/el7/x86_64/
enabled=1
gpgcheck=1
type=rpm-md
gpgkey=http://mirrors.163.com/ceph/keys/release.asc

三、安裝ceph

3.1 安裝ceph（admin）

yum -y update && yum -y install --release hammer ceph ceph-deploy

3.2 安裝ceph（其余node）

yum -y update && yum -y install --release hammer ceph 

3.3 允許無密碼 SSH 登錄(admin)

生成密鑰對（一路回車即可）
ssh-keygen 

將公鑰拷貝到其余節點
ssh-copy-id root@node1
ssh-copy-id root@node2
ssh-copy-id root@node3

測試，ssh到各個節點，看是否需要輸入密碼

四、安裝完成

驗證安裝效果
命令行輸入ceph按Tab鍵不齊，如果出現其余命令，則說明已經安裝完成啦！
[root@localhost /]# ceph
ceph                   ceph-dencoder          ceph-mon
ceph-authtool          ceph-deploy            ceph-objectstore-tool
ceph-brag              ceph-disk              ceph-osd
ceph-client-debug      ceph-disk-activate     ceph-post-file
ceph-clsinfo           ceph-disk-prepare      ceph-rbdnamer
ceph-conf              ceph-disk-udev         ceph-rest-api
ceph-coverage          cephfs                 ceph-run
ceph-create-keys       cephfs-journal-tool    ceph-syn
ceph-crush-location    cephfs-table-tool      
ceph-debugpack         ceph-mds               
[root@localhost /]# ceph