Re: Missing OSD daemons while they are in UP state.

[Albert Archer <albertarcher94@xxxxxxxxx>]

It's not strange enough ???

On May 25, 2016 3:38 PM, "Albert Archer" <albertarcher94@xxxxxxxxx> wrote:

Hello All,

Unfortunately my virtual ceph cluster(virtual machines on VMware ESXI) felt into strange state.

When i reboot one of ceph OSD machines (hostname=osd3), all of OSD daemons that related to that host were down (it's normal).

But when that OSD host boots up, i couldn't make OSDs UP, Because when i run this command to view my ceph daemons ($ sudo  systemctl -a | grep ceph ), there was no 

ceph-osd@x.sevice  deamon to to got start by me.

$ sudo  systemctl -a | grep ceph 

.

.

.

 var-lib-ceph-osd-ceph\x2d2.mount                    loaded    active   mounted   /var/lib/ceph/osd/ceph-2

 var-lib-ceph-osd-ceph\x2d5.mount                    loaded    active   mounted   /var/lib/ceph/osd/ceph-5

 var-lib-ceph-osd-ceph\x2d8.mount                    loaded    active   mounted   /var/lib/ceph/osd/ceph-8

 session-1.scope                                                    loaded    active   abandoned Session 1 of user cephuser

 session-37.scope                                                  loaded    active   running   Session 37 of user cephuser

.

.

.

                             

   

so , when i run following command in that OSD host, my OSD daemon getting UP.

$ ceph-osd -i 2

$ ceph-osd -i 5

$ ceph-osd -i 8

....................................................

$ ceph osd tree

ID WEIGHT  TYPE NAME      UP/DOWN REWEIGHT PRIMARY-AFFINITY

-1 1.26874 root default

-2 0.29279     host osd1

 0 0.09760         osd.0       up  1.00000          1.00000

 3 0.09760         osd.3       up  1.00000          1.00000

 6 0.09760         osd.6       up  1.00000          1.00000

-3 0.48798     host osd2

 1 0.09760         osd.1       up  1.00000          1.00000

 4 0.09760         osd.4       up  1.00000          1.00000

 7 0.09760         osd.7       up  1.00000          1.00000

 9 0.09760         osd.9       up  1.00000          1.00000

10 0.09760         osd.10      up  1.00000          1.00000

-4 0.48798     host osd3

 2 0.09760         osd.2       up  1.00000          1.00000

 5 0.09760         osd.5       up  1.00000          1.00000

 8 0.09760         osd.8       up  1.00000          1.00000

But, still there is no ceph-osd@x.sevice daemon to manage OSDs.

what is the problem ???

Regards

Albert

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