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Hey, I tried to simulate the failure of 2 monitors including their monmap, and to bring them up in my testing cluster. The ceph version is 10.2.5, the OS is REHL7.2, and the testing cluster has 3 nodes with 3 monitors and 24 osds, each node has 1 monitor and 8 osds. So, I stopped the 2 (the mon.a and mon.c) of 3 ceph-mon daemon and delete all file of directory /var/lib/ceph/mon/ceph-a/store.db, and then I tried to recover the ceph-mon daemon referring to the ceph documents, but there
is something unexcepted happened. The recovery procedure is as following: To grab the monmap from another monitor (stop the monitor daemon before extract): The 2 ceph-mon are down, so I do need to stop the monitor. To inject the monmap: # ceph-mon ?i a ?inject-monmap /tmp/monmap There is an error after that: Error opening mon data directory at ‘/var/lib/ceph/mon/ceph-a’: (22) Invalid argument. But the directory /var/lib/ceph/ceph-a is exist and the owner is ceph:ceph, why does it happen? And is my simulation and recovery procedure right?
Best regards, He taotao EMAIL：HETAOTAO818@xxxxxxxxxxxxx |
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