1. Environmental preparation

1.1. Modify the host name

172.31.21.135 Execute hostname CTL set-hostname ceph1
 172.31.21.185 Execute hostname CTL set-hostname ceph2
 172.31.21.167 Execute hostname CTL set-hostname ceph3

1.2. Configuration of Aliyuan

rm -f /etc/yum.repos.d/*
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo
sed -i '/aliyuncs.com/d' /etc/yum.repos.d/*.repo
echo '#Ali ceph Source
[ceph]
name=ceph
baseurl=http://mirrors.aliyun.com/ceph/rpm-luminous/el7/x86_64/
gpgcheck=0
[ceph-noarch]
name=cephnoarch
baseurl=http://mirrors.aliyun.com/ceph/rpm-luminous/el7/noarch/
gpgcheck=0
[ceph-source]
name=ceph-source
baseurl=http://mirrors.aliyun.com/ceph/rpm-luminous/el7/SRPMS/
gpgcheck=0
#'>/etc/yum.repos.d/ceph.repo
yum clean all && yum makecache
yum install deltarpm -y
yum -y install python2-pip

1.3. Configuration time synchronization

yum install ntp ntpdate ntp-doc -y

1.4. Formatted Disk

mkfs.xfs /dev/vdb -f

2. Deployment node preparation

2.1. Modify the hosts file of the primary node

echo '172.31.21.135' ceph1 >> /etc/hosts
echo '172.31.21.185' ceph2 >> /etc/hosts
echo '172.31.21.167' ceph3 >> /etc/hosts

2.2. SSH Secret-Free Logon Settings

Generating public and private keys

ssh-keygen -t rsa

Import public key to authentication file

cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys  
scp ~/.ssh/id_rsa.pub root@ceph1:~/.ssh/id_rsa.pub 
scp ~/.ssh/id_rsa.pub root@ceph2:~/.ssh/id_rsa.pub 
scp ~/.ssh/id_rsa.pub root@ceph3:~/.ssh/id_rsa.pub 
cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys  

change permission

chmod 700 ~/.ssh
chmod 600 ~/.ssh/authorized_keys  

2.3. Main node installs ceph-deploy and CEPH

yum install yum install -y ceph
yum install ceph-deploy -y

2.4. Installing ceph from slave node

yum install -y ceph

2.5. Create monitoring nodes

mkdir -p /etc/ceph
cd /etc/ceph
ceph-deploy new ceph1 ceph2 ceph3

2.6. Installation of cpeh

ceph-deploy install ceph1 ceph2 ceph3

2.7. Initialization of monitoring nodes

ceph-deploy mon create-initial

2.8. Deploy MGR and create monitor management node

ceph-deploy mgr create ceph1

2.9 distribution of configuration files

ceph-deploy admin ceph1 ceph2 ceph3

2.10, add and activate osd

List all disks:
ceph-deploy disk list ceph1 ceph2 ceph3

ceph-deploy osd create --data /dev/vdb ceph2
ceph-deploy osd create --data /dev/vdb ceph3

2.11. Viewing Cluster Status

ceph -s

[root@host-172-31-21-135 ~]# ceph -s
  cluster:
    id:     bd2f46ff-afc8-4d91-8070-a16246f6266c
    health: HEALTH_OK
 
  services:
    mon: 3 daemons, quorum ceph1,ceph3,ceph2
    mgr: ceph1(active)
    osd: 2 osds: 2 up, 2 in
 
  data:
    pools:   0 pools, 0 pgs
    objects: 0 objects, 0B
    usage:   2.00GiB used, 98.0GiB / 100GiB avail
    pgs:     

2.12. Open dashboard module

ceph mgr module enable dashboard

Enter http://172.31.21.135:7000/to get the return page in the browser