Permissions of your mon data directory under /var/lib/ceph/mon/ might have changed as part of Hammer -> Jewel upgrade. Have you had a look there?
________________________________ From: ceph-users <ceph-users-boun...@lists.ceph.com> on behalf of 许雪寒 <xuxue...@360.cn> Sent: Thursday, 22 June 2017 3:32:45 PM To: ceph-users@lists.ceph.com Subject: [ceph-users] Can't start ceph-mon through systemctl start ceph-mon@.service after upgrading from Hammer to Jewel Hi, everyone. I upgraded one of our ceph clusters from Hammer to Jewel. After upgrading, I can’t start ceph-mon through “systemctl start ceph-mon@ceph1”, while, on the other hand, I can start ceph-mon, either as user ceph or root, if I directly call “/usr/bin/ceph-mon –cluster ceph –id ceph1 –setuser ceph –setgroup ceph”. I looked “/var/log/messages”, and find that the reason systemctl can’t start ceph-mon is that ceph-mon can’t access its configured data directory. Why ceph-mon can’t access its data directory when its called by systemctl?
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