Hi All We are preparing upgrade from Ceph Infernalis 9.2.0 to Ceph Jewel 10.2.2. Based on the Upgrade procedure documentation http://docs.ceph.com/docs/jewel/install/upgrading-ceph/ it sound easy. But it often fails when you think it's easy. Therefore I would like to know your opinion for the following questions: 1) We think to upgrade one monitor after each other. If we break one monitor, the 2 others are still operational. in the Documentation the propose ceph-deploy install --release jewel mon1 mon2 mon3 Wouldn't it be wise to upgrade one after the other? ceph-deploy install --release jewel mon1 ceph-deploy install --release jewel mon2 ceph-deploy install --release jewel mon3 Same procedure for Monitor Nodes ?? 2) On which node would you recommend running the ceph-deploy command? which one is the admin node? 3) If we are using ceph-deploy for upgrading, do we need to change the apt repository? #cat /etc/apt/sources.list.d/ceph_com_debian_infernalis.list deb http://ceph.com/debian-infernalis trusty main 4) There is not possibility to revert the upgrade. Is there any plan B when the upgrade fails ? Sorry for being so pessimistic. 5) General Experiences in upgrading ceph? Does it fails often? How was your plan B in case of upgrade failures ? Your feedbacks are highly appreciated! Thanks felder _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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