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[CEPH] OSD Node remove
글쓴이 : 최고관리자 날짜 : 2015-04-03 (금) 14:57 조회 : 4825
글주소 :
                                

root@osd4:~# ceph -w
    cluster 38e6bdde-e19e-4801-8dc0-0e7a47734611
     health HEALTH_OK
     monmap e1: 3 mons at {mon0=115.68.200.60:6789/0,mon1=115.68.200.61:6789/0,mon2=115.68.200.62:6789/0}, election epoch 12, quorum 0,1,2 mon0,mon1,mon2
     osdmap e115: 6 osds: 5 up, 5 in
      pgmap v6596: 960 pgs, 5 pools, 18558 MB data, 4729 objects
            56003 MB used, 83729 GB / 83783 GB avail
                 960 active+clean

root@osd4:~# ceph osd tree
# id weight type name up/down reweight
-1 81.8 root default
-2 16.36 host osd0
0 16.36 osd.0 up 1
-3 16.36 host osd1
1 16.36 osd.1 up 1
-4 16.36 host osd2
2 16.36 osd.2 up 1
-5 16.36 host osd3
3 16.36 osd.3 up 1
-6 16.36 host osd4
5 16.36 osd.5 up 1
4 0 osd.4 down 0

root@osd4:~# ceph osd out osd.5
marked out osd.5. 

root@osd4:~# ceph -s
    cluster 38e6bdde-e19e-4801-8dc0-0e7a47734611
     health HEALTH_WARN 158 pgs degraded; 13 pgs recovering; 158 pgs stuck unclean; recovery 3046/14187 objects degraded (21.470%)
     monmap e1: 3 mons at {mon0=115.68.200.60:6789/0,mon1=115.68.200.61:6789/0,mon2=115.68.200.62:6789/0}, election epoch 12, quorum 0,1,2 mon0,mon1,mon2
     osdmap e117: 6 osds: 5 up, 4 in
      pgmap v6626: 960 pgs, 5 pools, 18558 MB data, 4729 objects
            50893 MB used, 66977 GB / 67027 GB avail
            3046/14187 objects degraded (21.470%)
                 145 active+degraded
                 802 active+clean
                  13 active+recovering+degraded
recovery io 78785 kB/s, 19 objects/s


OSD를 제거하면 그룹상태가 active+clean 상태에서
--> active, som degraded objects 라고 변경
--> 다시 active+clean 상태


데몬중지
root@osd4:~# stop ceph-osd id=4





root@osd4:~# ceph osd tree
# id weight type name up/down reweight
-1 65.44 root default
-2 16.36 host osd0
0 16.36 osd.0 up 1
-3 16.36 host osd1
1 16.36 osd.1 up 1
-4 16.36 host osd2
2 16.36 osd.2 up 1
-5 16.36 host osd3
3 16.36 osd.3 up 1
5 0 osd.5 down 0

root@osd4:~# ceph osd rm 5
removed osd.5


root@osd4:~# ceph osd tree
# id weight type name up/down reweight
-1 65.44 root default
-2 16.36 host osd0
0 16.36 osd.0 up 1
-3 16.36 host osd1
1 16.36 osd.1 up 1
-4 16.36 host osd2
2 16.36 osd.2 up 1
-5 16.36 host osd3
3 16.36 osd.3 up 1



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