I think he needs the “gateway” servers because he wishes to expose the storage to clients which won’t speak Ceph natively. I’m not sure I would entirely trust that windows port of CephFS and there are also security concerns with allowing end users to talk directly to Ceph. There’s also future stuff like CephFS snapshots, which Samba can then wrap around to provide previous versions directly into windows explorer. You probably also don’t want to use CephFS at this point, there are several outstanding points that means that it’s going to require a bit more work than you ideally want to have to go through if you want to export it HA over NFS and SMB reliably. There were some posts about a year ago (I think??) which covered some of the issues using CTDB with CephFS in a HA fashion. Mainly around timeouts in CephFS and how they match up to what CTDB expects. Currently the simplest and most reliable way is like the blog article linked, to export NFS+SMB on a filesystem over a RBD. This will require the use of Pacemaker for HA and that’s a whole separate topic in itself to get right. From: ceph-users [mailto:ceph-users-bounces@xxxxxxxxxxxxxx] On Behalf Of David Turner CephFS does not require a central NFS server. Any Linux server can mount the CephFS volume at the same time. There is also a windows client for CephFS (https://drupal.star.bnl.gov/STAR/blog/mpoat/cephfs-client-windows-based-dokan-060). I don't see the need for the NFS/SMB server or complicated HA setup. What you do need to make sure is HA is the MDS service. It is not natively HA, but there are several guides to work around that.
From: ceph-users [ceph-users-bounces@xxxxxxxxxxxxxx] on behalf of John Petrini [jpetrini@xxxxxxxxxxxx] Here's a really good write up on how to cluster NFS servers backed by RBD volumes. It could be adapted to use CephFS with relative ease. ___ John Petrini NOC Systems Administrator // CoreDial, LLC // coredial.com //
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