Re: [ceph-users] Is it possible to change the MDS node after its been created
On Mon, Mar 30, 2015 at 3:15 PM, Francois Lafont flafdiv...@free.fr wrote: Hi, Gregory Farnum wrote: The MDS doesn't have any data tied to the machine you're running it on. You can either create an entirely new one on a different machine, or simply copy the config file and cephx keyring to the appropriate directories. :) Sorry to enter in this post but how can we *remove* a mds daemon of a ceph cluster? Are the commands below enough? stop the daemon rm -r /var/lib/ceph/mds/ceph-$id/ ceph auth del mds.$id Should we edit something in the mds map to remove once and for all the mds ? As long as you turn on another MDS which takes over the logical rank of the MDS you remove, you don't need to remove anything from the cluster store. Note that if you just copy the directory and keyring to the new location you shouldn't do the ceph auth del bit either. ;) -Greg -- François Lafont -- François Lafont ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
Re: [ceph-users] Is it possible to change the MDS node after its been created
On Mon, Mar 30, 2015 at 1:51 PM, Steve Hindle mech...@gmail.com wrote: Hi! I mistakenly created my MDS node on the 'wrong' server a few months back. Now I realized I placed it on a machine lacking IPMI and would like to move it to another node in my cluster. Is it possible to non-destructively move an MDS ? The MDS doesn't have any data tied to the machine you're running it on. You can either create an entirely new one on a different machine, or simply copy the config file and cephx keyring to the appropriate directories. :) -Greg ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
[ceph-users] Is it possible to change the MDS node after its been created
Hi! I mistakenly created my MDS node on the 'wrong' server a few months back. Now I realized I placed it on a machine lacking IPMI and would like to move it to another node in my cluster. Is it possible to non-destructively move an MDS ? Thanks! ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
Re: [ceph-users] Is it possible to change the MDS node after its been created
Gregory Farnum wrote: Sorry to enter in this post but how can we *remove* a mds daemon of a ceph cluster? Are the commands below enough? stop the daemon rm -r /var/lib/ceph/mds/ceph-$id/ ceph auth del mds.$id Should we edit something in the mds map to remove once and for all the mds ? As long as you turn on another MDS which takes over the logical rank of the MDS you remove, you don't need to remove anything from the cluster store. Ok, and for just remove a mds I guess that commands above are enough. ;) Note that if you just copy the directory and keyring to the new location you shouldn't do the ceph auth del bit either. ;) Yes, it seems logical. Thank you Greg. :) -- François Lafont ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
Re: [ceph-users] Is it possible to change the MDS node after its been created
Hi, Gregory Farnum wrote: The MDS doesn't have any data tied to the machine you're running it on. You can either create an entirely new one on a different machine, or simply copy the config file and cephx keyring to the appropriate directories. :) Sorry to enter in this post but how can we *remove* a mds daemon of a ceph cluster? Are the commands below enough? stop the daemon rm -r /var/lib/ceph/mds/ceph-$id/ ceph auth del mds.$id Should we edit something in the mds map to remove once and for all the mds ? -- François Lafont -- François Lafont ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
