I need to create the directory "/var/lib/ceph/mds/mds.$id "by hand, right ?
I start the service as you said, and it is succeed. But, no "mds.$id" directory exist. Will this affect it working? And, what will be installed in the directory? FS's metadata will be installed in OSDs, right? Thanks. -chen From: Sebastien Han [mailto:sebastien....@enovance.com] Sent: Friday, March 15, 2013 4:49 PM To: Li, Chen Cc: ceph-users@lists.ceph.com Subject: Re: [ceph-users] how to enable MDS service in a running Ceph cluster Hi, * Edit `ceph.conf` and add a MDS section like so: [mds] mds data = /var/lib/ceph/mds/mds.$id keyring = /var/lib/ceph/mds/mds.$id/mdsi.$id.keyring [mds.0] host = {hostname} * Create the authentication key (if you use cephx): $ sudo ceph auth get-or-create mds.0 mds 'allow rwx' mds 'allow *' osd 'allow *' > /var/lib/ceph/mds/mds.0/mds.0.keyring * Eventually start the service $ sudo service ceph start mds.0 === mds.0 === Starting Ceph mds.0 on ceph... starting mds.0 at :/0 Cheers. ---- Sébastien Han Cloud Engineer "Always give 100%. Unless you're giving blood." [cid:image001.png@01CE219E.E956C3D0] PHONE : +33 (0)1 49 70 99 72 - MOBILE : +33 (0)6 52 84 44 70 EMAIL : sebastien....@enovance.com<mailto:sebastien....@enovance.com> - SKYPE : han.sbastien ADDRESS : 10, rue de la Victoire - 75009 Paris WEB : www.enovance.com<http://www.enovance.com/> - TWITTER : @enovance On Mar 15, 2013, at 8:52 AM, "Li, Chen" <chen...@intel.com<mailto:chen...@intel.com>> wrote: Hi list, I'm a new user of Ceph. I have built a set up to try using RBDs, and it works brilliant. I haven't enable MDS service, because I think I do not need it at that time. But now, I want to try Ceph FS on the same cluster. The question here is: I already have some data stored in RBDs. Is there a way to enable MDS in the running Ceph cluster? Thanks. -chen _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com<mailto:ceph-users@lists.ceph.com> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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