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  • ceph如何快速卸载所有osd及擦除磁盘分区表和内容并重新加入

    我的ceph集群中有4台服务器,16个osd,因为某些原因,集群中的数据都不要了,但是集群要保留给新的应用使用,集群现有的osd情况如下
    [root@ceph-host-01 ~]# cat /etc/hosts
    127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
    ::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
    10.30.1.221 ceph-host-01
    10.30.1.222 ceph-host-02
    10.30.1.223 ceph-host-03
    10.30.1.224 ceph-host-04
     
    [root@ceph-host-01 ceph-cluster]# ceph osd tree
    ID CLASS WEIGHT  TYPE NAME             STATUS REWEIGHT PRI-AFF
    -1       1.23207 root default                                  
    -3       0.30800     host ceph-host-01                         
    0   hdd 0.07700         osd.0             up  1.00000 1.00000
    4   hdd 0.07700         osd.4             up  1.00000 1.00000
    8   hdd 0.07700         osd.8             up  1.00000 1.00000
    12   hdd 0.07700         osd.12            up  1.00000 1.00000
    -5       0.30807     host ceph-host-02                         
    1   hdd 0.07700         osd.1             up  1.00000 1.00000
    5   hdd 0.07700         osd.5             up  1.00000 1.00000
    9   hdd 0.07700         osd.9             up  1.00000 1.00000
    15   hdd 0.07709         osd.15            up  1.00000 1.00000
    -7       0.30800     host ceph-host-03                         
    2   hdd 0.07700         osd.2             up  1.00000 1.00000
    6   hdd 0.07700         osd.6             up  1.00000 1.00000
    10   hdd 0.07700         osd.10            up  1.00000 1.00000
    13   hdd 0.07700         osd.13            up  1.00000 1.00000
    -9       0.30800     host ceph-host-04                         
    3   hdd 0.07700         osd.3             up  1.00000 1.00000
    7   hdd 0.07700         osd.7             up  1.00000 1.00000
    11   hdd 0.07700         osd.11            up  1.00000 1.00000
    14   hdd 0.07700         osd.14            up  1.00000 1.00000
     
    下面是卸载所有osd的脚本 
     
    for i in 0 4 8 12;do
        ceph osd out osd.${i}
        ssh ceph-host-01 systemctl stop ceph-osd@${i}
        ssh ceph-host-01 systemctl disable ceph-osd@${i}
        ceph osd crush remove osd.${i}
        ceph auth del osd.${i}
        ceph osd rm osd.${i}
        ssh ceph-host-01 umount /var/lib/ceph/osd/ceph-${i}
    done
     
     
    for i in 1 5 9 15;do
        ceph osd out osd.${i}
        ssh ceph-host-02 systemctl stop ceph-osd@${i}
        ssh ceph-host-02 systemctl disable ceph-osd@${i}
        ceph osd crush remove osd.${i}
        ceph auth del osd.${i}
        ceph osd rm osd.${i}
        ssh ceph-host-02 umount /var/lib/ceph/osd/ceph-${i}
    done
     
     
    for i in 2 6 10 13;do
        ceph osd out osd.${i}
        ssh ceph-host-03 systemctl stop "ceph-osd@${i}"
        ssh ceph-host-03 systemctl disable "ceph-osd@${i}"
        ceph osd crush remove osd.${i}
        ceph auth del osd.${i}
        ceph osd rm osd.${i}
        ssh ceph-host-03 umount /var/lib/ceph/osd/ceph-${i}
    done
     
     
    for i in 3 7 11 14;do
        ceph osd out osd.${i}
        ssh ceph-host-03 systemctl stop ceph-osd@${i}
        ssh ceph-host-03 systemctl disable ceph-osd@${i}
        ceph osd crush remove osd.${i}
        ceph auth del osd.${i}
        ceph osd rm osd.${i}
        ssh ceph-host-04 umount /var/lib/ceph/osd/ceph-${i}
    done
     
    下面的是擦除所有磁盘数据并重新把osd加入集群的脚本
    for x in `seq 1 4`;do
      vgname=`ssh ceph-host-0${x} lvdisplay  | grep -i 'ceph' | grep -i 'vg' | awk '{print $3}'`
      for s in ${vgname};do
        ssh ceph-host-0${x} lvremove ${s} -f
      done
      for i in b c d e;do
        ceph-deploy disk zap ceph-host-0${x} /dev/vd${i}
        ceph-deploy osd create --data /dev/vd${i} ceph-host-0${x}
      done
    done
     
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  • 原文地址:https://www.cnblogs.com/dexter-wang/p/12320700.html
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