Which directory do you have ownership of? Keep in mind your local filesystem permissions do not get applied to the remote CephFS mount...
On Wed, Nov 1, 2017 at 11:03 AM Keane Wolter <wolterk@xxxxxxxxx> wrote:
I am mounting a directory under /user which I am the owner of with the permissions of 700. If I remove the uid=100026 option, I have no issues. I start having issues as soon as the uid restrictions are in place.On Wed, Nov 1, 2017 at 1:05 PM, Gregory Farnum <gfarnum@xxxxxxxxxx> wrote:Well, obviously UID 100026 needs to have the normal POSIX permissions to write to the /user path, which it probably won't until after you've done something as root to make it so...On Wed, Nov 1, 2017 at 9:57 AM Keane Wolter <wolterk@xxxxxxxxx> wrote:Acting as UID 100026, I am able to successfully run ceph-fuse and mount the filesystem. However, as soon as I try to write a file as UID 100026, I get permission denied, but I am able to write to disk as root without issue. I am looking for the inverse of this. I want to write changes to disk as UID 100026, but not as root. From what I understood in the email at http://lists.ceph.com/pipermail/ceph-users-ceph.com/2017-February/016173.html, I should be able to do so with the following cephx caps set to "caps: [mds] allow r, allow rw path=/user uid=100026". Am I wrong with this assumption or is there something else at play I am not aware of?Thanks,KeaneOn Wed, Oct 25, 2017 at 5:52 AM, Gregory Farnum <gfarnum@xxxxxxxxxx> wrote:On Mon, Oct 23, 2017 at 5:03 PM Keane Wolter <wolterk@xxxxxxxxx> wrote:Hi Gregory,I did set the cephx caps for the client to:caps: [mds] allow r, allow rw uid=100026 path=/user, allow rw path=/projectSo you’ve got three different permission granting clauses here:1) allows the client to read anything2) allows the client to act as uid 100026 in the path /user3) allows the user to do any read or write (as any user) in path /projectcaps: [mon] allow rcaps: [osd] allow rw pool=cephfs_osiris, allow rw pool=cephfs_usersKeaneOn Fri, Oct 20, 2017 at 5:35 PM, Gregory Farnum <gfarnum@xxxxxxxxxx> wrote:What did you actually set the cephx caps to for that client?On Fri, Oct 20, 2017 at 8:01 AM Keane Wolter <wolterk@xxxxxxxxx> wrote:_______________________________________________Hello all,I am trying to limit what uid/gid a client is allowed to run as (similar to NFS' root squashing). I have referenced this email, http://lists.ceph.com/pipermail/ceph-users-ceph.com/2017-February/016173.html, with no success. After generating the keyring, moving it to a client machine, and mounting the filesystem with ceph-fuse, I am still able to create files with the UID and GID of root.Is there something I am missing or can do to prevent root from working with a ceph-fuse mounted filesystem?Thanks,Keane
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