How do i check the status of object storage daemon (osd) on ceph?



  • Link: http://docs.ceph.com/docs/master/rados/operations/monitoring-osd-pg/

    The result should tell you the map epoch (eNNNN), the total number of OSDs (x), how many are up (y) and how many are in (z).

    $ ceph osd stat
         osdmap e24: 9 osds: 9 up, 9 in
                flags sortbitwise
    

    You can further drill down to see what's running and not running.

    $ ceph osd tree
    ID WEIGHT  TYPE NAME          UP/DOWN REWEIGHT PRIMARY-AFFINITY 
    -1 0.84320 root default                                         
    -2 0.28107     host osd-node2                                   
     0 0.09369         osd.0           up  1.00000          1.00000 
     5 0.09369         osd.5           up  1.00000          1.00000 
     8 0.09369         osd.8           up  1.00000          1.00000 
    -3 0.28107     host osd-node3                                   
     2 0.09369         osd.2           up  1.00000          1.00000 
     4 0.09369         osd.4           up  1.00000          1.00000 
     7 0.09369         osd.7           up  1.00000          1.00000 
    -4 0.28107     host osd-node1                                   
     1 0.09369         osd.1           up  1.00000          1.00000 
     3 0.09369         osd.3           up  1.00000          1.00000 
     6 0.09369         osd.6           up  1.00000          1.00000 
    


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