centos7部署ceph集群（正确）

Posted 2020-08-22

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

[[email protected] ~]# hostname ceph-node1

[[email protected] ~]# vim /etc/sysconfig/network

HOSTNAME=ceph-node1

2：配置ip地址，子网掩码，网关

[[email protected] ~]# 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

[[email protected] ~]# 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

[[email protected] ~]# firewall-cmd --zone=public --add-port=6789/tcp --permanent

success

[[email protected] ~]# firewall-cmd --zone=public --add-port=6800-7100/tcp --permanent

success

[[email protected] ~]# firewall-cmd --reload

success

[[email protected] ~]# 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

[[email protected] ~]# setenforce 0

[[email protected] ~]# sed -i "s/enforcing/permissive/g" /etc/selinux/config

6：配置时间同步

[[email protected] ~]# yum -y install ntp ntpdate

[[email protected] ~]# systemctl restart ntpd.service

[[email protected] ~]# systemctl enable ntpd.service

Created symlink from /etc/systemd/system/multi-user.target.wants/ntpd.service to /usr/lib/systemd/system/ntpd.service.

[[email protected] ~]# 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

[[email protected] ceph]# rpm -Uvh https://download.ceph.com/rpm-jewel/el7/noarch/ceph-release-1-0.el7.noarch.rpm

[[email protected] ~]# yum -y update

8：配置ceph1的免秘钥登录

[[email protected] ~]# ssh-keygen

[[email protected] ~]# ssh-copy-id [email protected]

[[email protected] ~]# ssh-copy-id [email protected]

在ceph-node1上创建集群

1：安装ceph-deploy

[[email protected] ~]# yum -y install ceph-deploy

2：使用ceph-deploy创建一个ceph集群

[[email protected] ~]# mkdir /etc/ceph

[[email protected] ~]# cd /etc/ceph/

[[email protected] ceph]# ceph-deploy new ceph-node1

[[email protected] ceph]# ls

ceph.conf  ceph.log  ceph.mon.keyring

3：使用ceph-deploy在所有节点安装ceph二进制包

[[email protected] ceph]# ceph-deploy install ceph-node1 ceph-node2 ceph-node3

[[email protected] ceph]# ceph -v

ceph version 9.2.1 (752b6a3020c3de74e07d2a8b4c5e48dab5a6b6fd)

4：在ceph-node1上创建第一个ceph monitor

[[email protected] ceph]# ceph-deploy mon create-initial

5：在ceph-node1上创建osd

[r[email protected] ceph]# ceph-deploy disk list ceph-node1

[[email protected] ceph]# ceph-deploy disk zap ceph-node1:sdb ceph-node1:sdc ceph-node1:sdd

[[email protected] ~]# ceph-deploy disk zap ceph-node1:sdb ceph-node1:sdc ceph-node1:sdd

[[email protected] ~]# ceph-deploy osd create ceph-node1:sdb ceph-node1:sdc ceph-node1:sdd

[[email protected] ~]# ceph -s

扩展ceph集群

1：添加公共网络地址到配置文件

[[email protected] ~]# cd /etc/ceph/

[[email protected] ceph]# vim /etc/ceph/ceph.conf

2：在ceph-node2、ceph-node3上创建一个monitor

[[email protected] ceph]# ceph-deploy mon create ceph-node2

[[email protected] ceph]# ceph-deploy mon create ceph-node3

3：从ceph-node2、ceph-node3中添加osd

[[email protected] ceph]# ceph-deploy disk list ceph-node2 ceph-node3

[[email protected] ceph]# ceph-deploy disk zap ceph-node2:sdb ceph-node2:sdc ceph-node2:sdd

[[email protected] ceph]# ceph-deploy disk zap ceph-node3:sdb ceph-node3:sdc ceph-node3:sdd

[[email protected] ceph]# ceph-deploy osd create ceph-node2:sdb ceph-node2:sdc ceph-node2:sdd

[[email protected] ceph]# ceph-deploy osd create ceph-node3:sdb ceph-node3:sdc ceph-node3:sdd

4：调整pg和pgp的数量

[[email protected] ceph]# ceph osd pool set rbd pg_num 256

[[email protected] ceph]# 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

[[email protected] ceph]# 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

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