centos7部署ceph集群（正确）
环境介绍主机名
系统
ip地址
ceph版本
ceph-node1
CentOS Linux release 7.2.1511
192.168.1.120
jewel
ceph-node2
CentOS Linux release 7.2.1511
192.168.1.121
jewel
ceph-node3
CentOS Linux release 7.2.1511
192.168.1.128
jewel
准备工作
◆ 1-7在三台ceph节点上都需要进行操作
◆ 8只在ceph1操作即可
1：修改主机名
# hostname ceph-node1
# vim /etc/sysconfig/network
HOSTNAME=ceph-node1
2：配置ip地址，子网掩码，网关
# cat /etc/sysconfig/network-scripts/ifcfg-eno16777736
TYPE="Ethernet"
BOOTPROTO="none"
DEFROUTE="yes"
IPV4_FAILURE_FATAL="no"
IPV6INIT="no"
IPV6_AUTOCONF="yes"
IPV6_DEFROUTE="yes"
IPV6_PEERDNS="yes"
IPV6_PEERROUTES="yes"
IPV6_FAILURE_FATAL="no"
NAME="eth1"
DEVICE="eno16777736"
ONBOOT="yes"
IPADDR="192.168.1.120"
PREFIX="24"
GATEWAY="192.168.1.1"
DNS1="192.168.0.220"
3：配置hosts文件
# vim /etc/hosts
ceph-node1 192.168.1.120
ceph-node2 192.168.1.121
ceph-node3 192.168.1.128
4：配置防火墙
# firewall-cmd --zone=public --add-port=6789/tcp --permanent
success
# firewall-cmd --zone=public --add-port=6800-7100/tcp --permanent
success
# firewall-cmd --reload
success
# firewall-cmd --zone=public --list-all
public (default, active)
interfaces: eno16777736
sources:
services: dhcpv6-client ssh
ports: 6789/tcp 6800-7100/tcp
masquerade: no
forward-ports:
icmp-blocks:
rich rules:
5：禁用selinux
# setenforce 0
# sed -i "s/enforcing/permissive/g" /etc/selinux/config
6：配置时间同步
# yum -y install ntp ntpdate
# systemctl restart ntpd.service
# systemctl enable ntpd.service
Created symlink from /etc/systemd/system/multi-user.target.wants/ntpd.service to /usr/lib/systemd/system/ntpd.service.
# systemctl enable ntpdate.service
Created symlink from /etc/systemd/system/multi-user.target.wants/ntpdate.service to /usr/lib/systemd/system/ntpdate.service.
7：添加ceph jewel版本并更新yum
# rpm -Uvh https://download.ceph.com/rpm-jewel/el7/noarch/ceph-release-1-0.el7.noarch.rpm
# yum -y update
8：配置ceph1的免秘钥登录
# ssh-keygen
# ssh-copy-id root@ceph-node2
# ssh-copy-id root@ceph-node3
在ceph-node1上创建集群
1：安装ceph-deploy
# yum -y install ceph-deploy
2：使用ceph-deploy创建一个ceph集群
# mkdir /etc/ceph
# cd /etc/ceph/
# ceph-deploy new ceph-node1
# ls
ceph.confceph.logceph.mon.keyring
3：使用ceph-deploy在所有节点安装ceph二进制包
# ceph-deploy install ceph-node1 ceph-node2 ceph-node3
# ceph -v
ceph version 9.2.1 (752b6a3020c3de74e07d2a8b4c5e48dab5a6b6fd)
4：在ceph-node1上创建第一个ceph monitor
# ceph-deploy mon create-initial
5：在ceph-node1上创建osd
# ceph-deploy disk list ceph-node1
# ceph-deploy disk zap ceph-node1:sdb ceph-node1:sdc ceph-node1:sdd
# ceph-deploy disk zap ceph-node1:sdb ceph-node1:sdc ceph-node1:sdd
# ceph-deploy osd create ceph-node1:sdb ceph-node1:sdc ceph-node1:sdd
# ceph -s
扩展ceph集群
1：添加公共网络地址到配置文件
# cd /etc/ceph/
# vim /etc/ceph/ceph.conf
2：在ceph-node2、ceph-node3上创建一个monitor
# ceph-deploy mon create ceph-node2
# ceph-deploy mon create ceph-node3
3：从ceph-node2、ceph-node3中添加osd
# ceph-deploy disk list ceph-node2 ceph-node3
# ceph-deploy disk zap ceph-node2:sdb ceph-node2:sdc ceph-node2:sdd
# ceph-deploy disk zap ceph-node3:sdb ceph-node3:sdc ceph-node3:sdd
# ceph-deploy osd create ceph-node2:sdb ceph-node2:sdc ceph-node2:sdd
# ceph-deploy osd create ceph-node3:sdb ceph-node3:sdc ceph-node3:sdd
4：调整pg和pgp的数量
# ceph osd pool set rbd pg_num 256
# ceph osd pool set rbd pgp_num 256
5：查看集群状态，此时集群应该是health状态
# ceph -s
cluster 266bfddf-7f45-416d-95df-4e6487e8eb20
health HEALTH_OK
monmap e3: 3 mons at {ceph-node1=192.168.1.120:6789/0,ceph-node2=192.168.1.121:6789/0,ceph-node3=192.168.1.128:6789/0}
election epoch 8, quorum 0,1,2 ceph-node1,ceph-node2,ceph-node3
osdmap e53: 9 osds: 9 up, 9 in
flags sortbitwise,require_jewel_osds
pgmap v158: 256 pgs, 1 pools, 0 bytes data, 0 objects
320 MB used, 134 GB / 134 GB avail
256 active+clean
http://s1.运维网.com/wyfs02/M02/8B/3F/wKiom1hHsw6xjHflAAHqUGm9nWM998.png
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