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}/{image-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 {image-name} rbd info foo rbd info {pool-name}/{image-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}/{image-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}/{imagename} rbd unmap /dev/rbd/test/foo2 (责任编辑:IT) |