centos7部署ceph（mimic）

实验环境：

主机名	ip	配置
ceph01（deploy节点）	192.168.122.41	2c4g20G+20G*2
ceph02	192.168.122.42	2c4g20G+20G*2
ceph03	192.168.122.43	2c4g20G+20G*2

实验步骤：

1.基础配置

配置主机名，/etc/hosts文件，关iptables，关selinux，ntp时间同步等不表

2.配置yum源

yum install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm

cat > /etc/yum.repos.d/ceph.repo <

3.更新系统并重启机器

yum upgrade -y

4.安装ceph-deploy和其他基础包

yum install ceph-deploy python-setuptools openssh-server -y

5.删除ceph.repo文件

rm -f /etc/yum.repos.d/ceph.repo

6.在deploy节点执行下面脚本

cat install_ceph.sh 
#!/bin/bash

mkdir my-cluster
cd my-cluster

ceph-deploy new ceph01 ceph02 ceph03
ceph-deploy install ceph01 ceph02 ceph03
ceph-deploy mon create-initial
ceph-deploy admin ceph01 ceph02 ceph03
ceph-deploy mgr create ceph01 ceph02 ceph03

for node in ceph01 ceph02 ceph03
do
    for disk in sdb sdc
	do
	    ceph-deploy osd create --data /dev/$disk $node
    done
done

7.部署成功后查看状态

[root@ceph01 my-cluster]# ceph -s
  cluster:
    id:     e205ae15-22aa-4a25-b787-7eafe6a60728
    health: HEALTH_OK
 
  services:
    mon: 3 daemons, quorum ceph01,ceph02,ceph03
    mgr: ceph01(active), standbys: ceph02, ceph03
    osd: 6 osds: 6 up, 6 in
 
  data:
    pools:   0 pools, 0 pgs
    objects: 0  objects, 0 B
    usage:   6.0 GiB used, 114 GiB / 120 GiB avail
    pgs:     
 
[root@ceph01 my-cluster]# ceph osd tree
ID CLASS WEIGHT  TYPE NAME       STATUS REWEIGHT PRI-AFF 
-1       0.11691 root default                            
-3       0.03897     host ceph01                         
 0   hdd 0.01949         osd.0       up  1.00000 1.00000 
 1   hdd 0.01949         osd.1       up  1.00000 1.00000 
-5       0.03897     host ceph02                         
 2   hdd 0.01949         osd.2       up  1.00000 1.00000 
 3   hdd 0.01949         osd.3       up  1.00000 1.00000 
-7       0.03897     host ceph03                         
 4   hdd 0.01949         osd.4       up  1.00000 1.00000 
 5   hdd 0.01949         osd.5       up  1.00000 1.00000

参考链接：https://ceph.readthedocs.io/en/latest/install/ceph-deploy/quick-ceph-deploy/