ceph.conf file 添加mon模块配置（osd忽略）

[global]
  fsid = caefadfb-ad33-453f-be23-778fdbd0a892
  cluster = ceph
  public network = 10.3.0.129/27
  # Enable cephx authentication (which uses shared keys for almost everything)
  auth cluster required = cephx
  auth service required = cephx
  auth client required = cephx
  # Replication
  osd pool default size = 2
  osd pool default min size = 1
  osd pool default pg num = 333
  osd pool default pgp num = 333
  osd crush chooseleaf type = 1

[osd]
        osd journal size = 1024

[mon]
  # Global settings for monitors
  mon host = host1, host2, host3
  mon addr = 10.3.0.138:6789, 10.3.0.139:6789, 10.3.0.140:6789
  mon initial members = 0, 1, 2

[mon.0]
  host = zw-vm-138
  mon addr = 10.3.0.138:6789

[mon.1]
  host = zw-vm-139
  mon addr = 10.3.0.139:6789

[mon.2]
  host = zw-vm-140
  mon addr = 10.3.0.140:6789
  
[osd.0]
        host = zw-vm-138

[osd.1]
        host = zw-vm-139

[osd.2]
        host = zw-vm-140

[mds.0]
        host = zw-vm-138

创建监视器角色

创建 mon keyring

ceph-authtool --create-keyring /etc/ceph/ceph.mon.keyring --gen-key -n mon. --cap mon 'allow *'

创建admin keyring

ceph-authtool --create-keyring /etc/ceph/ceph.client.admin.keyring --gen-key -n client.admin --set-uid=0 --cap mon 'allow *' --cap osd 'allow *' --cap mds 'allow'

导入 admin keyring to the mon keyring

ceph-authtool /etc/ceph/ceph.mon.keyring --import-keyring /etc/ceph/ceph.client.admin.keyring

创建初始化 monmap file

monmaptool --create --add 0 192.168.2.1 --add 1 192.168.2.2 --add 2 192.168.2.3 --fsid 1798897a-f0c9-422d-86b3-d4933a12c7ac initial-monmap

push /etc/ceph/* to others server

在server1创建mon.0

监视器信息数据存放目录
mkdir -p /var/lib/ceph/mon/ceph-0 
chown ceph:ceph -R /var/lib/ceph
cd /var/log/ceph
rm -rf *
cd /etc/ceph
格式化
ceph-mon --mkfs -i 0 --monmap initial-monmap --keyring ceph.mon.keyring
启动脚本
cd /etc/init.d
ln -s ceph ceph.mon-0
rc-update add ceph.mon-0 default

在server1创建mon.1

mkdir -p /var/lib/ceph/mon/ceph-1
chown ceph:ceph -R /var/lib/ceph
cd /var/log/ceph
rm -rf *
cd /etc/ceph
ceph-mon --mkfs -i 1 --monmap initial-monmap --keyring ceph.mon.keyring

cd /etc/init.d
ln -s ceph ceph.mon-1
rc-update add ceph.mon-1 default

在server2创建mon.2

mkdir -p /var/lib/ceph/mon/ceph-0
chown ceph:ceph -R /var/lib/ceph
cd /var/log/ceph
rm -rf *
cd /etc/ceph
ceph-mon --mkfs -i 0 --monmap initial-monmap --keyring ceph.mon.keyring

cd /etc/init.d
ln -s ceph ceph.mon-0
rc-update add ceph.mon-0 default

start all mon servers

/etc/init.d/ceph.mon-0 start
/etc/init.d/ceph.mon-1 start
/etc/init.d/ceph.mon-2 start

启动后查看状态如下

#ceph -s
    cluster caefadfb-ad33-453f-be23-778fdbd0a892
     health HEALTH_ERR
            64 pgs stuck inactive
            64 pgs stuck unclean
            no osds
     monmap e1: 3 mons at {0=10.3.0.138:6789/0,1=10.3.0.139:6789/0,2=10.3.0.140:6789/0}
            election epoch 6, quorum 0,1,2 0,1,2
     osdmap e1: 0 osds: 0 up, 0 in
            flags sortbitwise
      pgmap v2: 64 pgs, 1 pools, 0 bytes data, 0 objects
            0 kB used, 0 kB / 0 kB avail
                  64 creating