CentOS 7 x64 安裝 Ceph

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CentOS 7  x64 安裝 Ceph

二， 實驗環境

節點            IP                 主機名稱                  系統

MON         172.24.0.13           ceph-mon0             CentOS 7 X64

MDS         172.24.0.13           ceph-mds0             CentOS 7 X64

OSD0        172.24.0.14           ceph-osd0             CentOS 7 X64  

OSD1        172.24.0.14           ceph-osd1             CentOS 7 X64

client      

三、安裝步驟

1、首先建立機器SSH互信關係

產生密鑰

ssh-keygen -t rsa -P ‘‘

ssh-keygen -t rsa -f .ssh/id_rsa -P ‘‘

向被授權的主機上拷貝

ssh-copy-id -i .ssh/id_rsa.pub [email protected]主機

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ssh-copy-id -i .ssh/id_rsa.pub [email protected] 

ssh-copy-id -i .ssh/id_rsa.pub [email protected]

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配置所有主機時間同步

安裝ntpdate

yum -y install ntpdate

開始同步時間

ntpdate time.windows.com 

修改每台機器的主機名稱 (hostname)  ( mon,mds,osd,client 都必須設定 )

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echo 172.24.0.13 ceph-mon0 >> /etc/hosts

echo 172.24.0.13 ceph-mds0 >> /etc/hosts

echo 172.24.0.14 ceph-osd0 >> /etc/hosts

echo 172.24.0.14 ceph-osd1 >> /etc/hosts

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yum更新，安裝相關依賴包(適用於mon,mds,osd)     

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rpm --import ‘https://ceph.com/git/?p=ceph.git;a=blob_plain;f=keys/release.asc‘

rpm -Uvh http://mirrors.yun-idc.com/epel/7/x86_64/e/epel-release-7-5.noarch.rpm

yum install snappy leveldb gdisk python-argparse gperftools-libs -y

rpm -Uvh http://ceph.com/rpm-dumpling/el7/noarch/ceph-release-1-0.el7.centos.noarch.rpm

yum install ceph-deploy -y

yum install ceph -y

yum install btrfs-progs           (適用於所有osd)

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配置/etc/ceph/ceph.conf，  (適用於mon,mds,osd)

vi /etc/ceph/ceph.conf

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[global]

public network = 172.24.0.0/24

pid file = /var/run/ceph/$name.pid

auth cluster required = none

auth service required = none

auth client required = none

keyring = /etc/ceph/keyring.$name

osd pool default size = 1

osd pool default min size = 1

osd pool default crush rule = 0

osd crush chooseleaf type = 1

[mon]

mon data = /var/lib/ceph/mon/$name

mon clock drift allowed = .15

keyring = /etc/ceph/keyring.$name

[mon.0]

host = ceph-mon0

mon addr = 172.24.0.13:6789

[mds]

keyring = /etc/ceph/keyring.$name

[mds.0]

host = ceph-mds0

[osd]

osd data = /mnt/osd$id

osd recovery max active = 5

osd mkfs type = xfs

osd journal = /mnt/osd$id/journal

osd journal size = 1000

keyring = /etc/ceph/keyring.$name

[osd.0]

host = ceph-osd0

devs = /dev/mapper/centos-osd0

[osd.1]

host = ceph-osd1

devs = /dev/mapper/centos-osd1

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建立目錄 ( osd )

mkdir /mnt/osd0 

mkdir /mnt/osd1

啟動ceph(在mon上執行)

初始化：

mkcephfs -a -c /etc/ceph/ceph.conf 

/etc/init.d/ceph -a start

( #遇到 Error ENOENT: osd.0 does not exist.  create it before updating the crush map ) 執行如下代碼:

ceph osd create

然後在執行   /etc/init.d/ceph -a start       既可完成

執行健全狀態檢查

ceph health      #也可以使用ceph -s命令查看狀態  (如果返回的是HEALTH_OK，則代表成功！)

掛載ceph  (172.24.0.15 為用戶端)

mon推薦有至少3個，假如掛掉一個、服務也能正常使用

client0的CentOS7預設沒有開啟ceph_fs的核心，需要更改核心，這裡直接用yum更新（可以手工編譯）

使用elrepo提供的, 已經編譯好的核心

rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org

rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-2.el7.elrepo.noarch.rpm

yum install -y yum-plugin-fastestmirror

yum --enablerepo=elrepo-kernel install kernel-ml kernel-ml-devel

grub2-set-default 0

reboot 重啟伺服器

mkdir /opt/ceph 

1.  ceph-fuse -m 172.24.0.13:6789 /opt/ceph 

2.  mount -t ceph 172.24.0.13:6789/ /opt/ceph

#這裡的密鑰，是mon /etc/ceph/ keyring.client.admin 中的內容。

多個 mon 可使用,號分開 如：ceph-fuse -m 172.24.0.13:6789,172.24.0.14:6789,172.24.0.15:6789 /opt/ceph

CentOS 7 x64 安裝 Ceph