1、安装环境
|-----node1(mon,osd) sda为系统盘,sdb和sdc为osd盘
|
|-----node2(mon,osd) sda为系统盘,sdb和sdc为osd盘
admin-----|
|-----node3(mon,osd) sda为系统盘,sdb和sdc为osd盘
|
|-----client
Ceph Monitors 之间默认使用 6789 端口通信, OSD 之间默认用 6800:7300 这个范围内的端口通信
2、准备工作(所有节点)
2.1、修改IP地址
vim /etc/sysconfig/network-scripts/ifcfg-em1
IPADDR=192.168.130.205
NETMASK=255.255.255.0
GATEWAY=192.168.130.2
2.2、关闭防火墙
systemctl stop firewalld.service #停止firewall
systemctl disable firewalld.service #禁止firewall开机启动
firewall-cmd --state #查看防火墙状态
2.3、修改yum源
cd /etc/yum.repos.d
mv CentOS-Base.repo CentOS-Base.repo.bk
wget http://mirrors.163.com/.help/CentOS6-Base-163.repo
yum makecache
2.4、修改时区
cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
yum -y install ntp
systemctl enable ntpd
systemctl start ntpd
ntpstat
2.5、修改hosts
vim /etc/hosts
192.168.130.205 admin
192.168.130.204 client
192.168.130.203 node3
192.168.130.202 node2
192.168.130.201 node1
2.6、安装epel仓库、添加yum ceph仓库、更新软件库
安装epel仓库
rpm -vih http://mirrors.sohu.com/fedora-epel/7/x86_64/e/epel-release-7-2.noarch.rpm
添加yum ceph仓库
vim /etc/yum.repos.d/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
2.7、安装ceph-deploy,ceph(ceph所有节点都安装,ceph-deploy只需admin节点安装)
yum -y update && yum -y install --release hammer ceph ceph-deploy
3、允许无密码 SSH 登录(admin节点)
3.1、生成SSH密钥对,提示 “Enter passphrase” 时,直接回车,口令即为空:
ssh-keygen
3.2、把公钥拷贝至所有节点
ssh-copy-id root@node1
ssh-copy-id root@node2
ssh-copy-id root@node3
ssh-copy-id root@client
3.3、验证是否可以无密码SSH登录
ssh node1
ssh node2
ssh node3
ssh client
4、创建Monitor(admin节点)
4.1、在node1、node2、node3上创建monitor
mkdir myceph
cd myceph
ceph-deploy new node1 node2 node3
4.2、修改osd的副本数,将osd pool default size = 2添加至末尾
vim /etc/ceph.conf
osd pool default size = 2
4.3、配置初始 monitor(s)、并收集所有密钥
ceph-deploy mon create-initial
5、创建OSD(admin节点)
5.1列举磁盘
ceph-deploy disk list node1
ceph-deploy disk list node2
5.2、擦净磁盘
ceph-deploy disk zap node1:sdb
ceph-deploy disk zap node1:sdc
ceph-deploy disk zap node2:sdb
ceph-deploy disk zap node2:sdc
ceph-deploy disk zap node3:sdb
ceph-deploy disk zap node3:sdc
5.3、准备OSD
ceph-deploy osd prepare node1:sdb
ceph-deploy osd prepare node1:sdc
ceph-deploy osd prepare node2:sdb
ceph-deploy osd prepare node2:sdc
ceph-deploy osd prepare node3:sdb
ceph-deploy osd prepare node3:sdc
ceph-deploy osd activate node1:sdb1
ceph-deploy osd activate node1:sdc1
ceph-deploy osd activate node2:sdb1
ceph-deploy osd activate node2:sdc1
ceph-deploy osd activate node3:sdb1
ceph-deploy osd activate node3:sdc1
5.4、删除OSD
ceph osd out osd.3
ssh node1 service ceph stop osd.3
ceph osd crush remove osd.3
ceph auth del osd.3 //从认证中删除
ceph osd rm 3 //删除
5.5、把配置文件和 admin 密钥拷贝到各节点,这样每次执行 Ceph 命令行时就无需指定 monitor 地址和 ceph.client.admin.keyring
ceph-deploy admin admin node1 node2 node3
5.6、查看集群健康状况
ceph health
6、配置块设备(client节点)
6.1、创建映像
rbd create foo --size 4096 [-m {mon-IP}] [-k /path/to/ceph.client.admin.keyring]
rbd create foo --size 4096 -m node1 -k /etc/ceph/ceph.client.admin.keyring
6.2、将映像映射为块设备
sudo rbd map foo --name client.admin [-m {mon-IP}] [-k /path/to/ceph.client.admin.keyring]
sudo rbd map foo --name client.admin -m node1 -k /etc/ceph/ceph.client.admin.keyring
6.3、创建文件系统
sudo mkfs.ext4 -m0 /dev/rbd/rbd/foo
6.4、挂载文件系统
sudo mkdir /mnt/ceph-block-device
sudo mount /dev/rbd/rbd/foo /mnt/ceph-block-device
cd /mnt/ceph-block-device
1、列出存储池
ceph osd lspools
2、创建存储池
ceph osd pool create pool-name pg-num pgp-num
ceph osd pool create test 512 512
3、删除存储池
ceph osd pool delete test test --yes-i-really-really-mean-it
4、重命名存储池
ceph osd pool rename current-pool-name new-pool-name
ceph osd pool rename test test2
5、查看存储池统计信息
rados df
6、调整存储池选项值
ceph osd pool set test size 3 设置对象副本数
7、获取存储池选项值
ceph osd pool get test size 获取对象副本数
1、创建块设备映像
rbd create --size {megabytes} {pool-name}/{p_w_picpath-name}
rbd create --size 1024 test/foo
2、罗列块设备映像
rbd ls
3、检索映像信息
rbd info {p_w_picpath-name}
rbd info foo
rbd info {pool-name}/{p_w_picpath-name}
rbd info test/foo
4、调整块设备映像大小
rbd resize --size 512 test/foo --allow-shrink 调小
rbd resize --size 4096 test/foo 调大
5、删除块设备
rbd rm test/foo
内核模块操作
1、映射块设备
sudo rbd map {pool-name}/{p_w_picpath-name} --id {user-name}
sudo rbd map test/foo2 --id admin
如若启用cephx认证,还需指定密钥
sudo rbd map test/foo2 --id admin --keyring /etc/ceph/ceph.client.admin.keyring
2、查看已映射设备
rbd showmapped
3、取消块设备映射
sudo rbd unmap /dev/rbd/{poolname}/{p_w_picpathname}
rbd unmap /dev/rbd/test/foo2