Thanks Sage, it clears my confusion especially for osd journal/data/keyring. And good to know ceph-disk is the right tool to use. Wei Cao (Buddy) -----Original Message----- From: Sage Weil [mailto:sage@xxxxxxxxxxx] Sent: Tuesday, May 6, 2014 10:18 PM To: Cao, Buddy Cc: ceph-users at ceph.com Subject: Re: About ceph.conf Hi Wei, On Tue, 6 May 2014, Cao, Buddy wrote: > According to the change of ceph-deploy from mkcephfs, I feel ceph.conf > is not a recommended way to manage ceph configuration. Is it true? If > so, how do I get the configurations previous configured in ceph.conf? > e.g., data drive, journal drive, [osd] conf, etc. ceph.conf is still the right way to set many configuration options. The only things it is not recommended for are - enumerating which daemons exist - configuring data, journal, and keyring paths In both cases, the preferred method is to enumerate OSDs, Monitors, etc in /var/lib/ceph/{osd,mon,mds}/ directories. The locations can be indicated with symlinks. This makes it easy to find ceph data on any node, regardless of which filesystem is being used. The new style ceph-disk utilities which do the OSD partitioning and fs creation steps rely on this. sage
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