Hi all, The docs for setting up a stretch cluster look fairly straightforward (https://docs.ceph.com/en/latest/rados/operations/stretch-mode/ <https://docs.ceph.com/en/latest/rados/operations/stretch-mode/>), and I can see how this works with RBD pools—i.e. the client only specifies the local monitors when mounting, and the local monitors will only talk to local OSDs (except for replication) as defined in that CRUSH datacenter. So far, so good.
But is it possible / supported / advisable to run rgw or CephFS in stretch mode? I’m not sure what the deployment should look like— eg. separate rgw and mds for each datacenter? Are the daemons smart enough (or is configuration required) to ensure they’re only communicating with local monitors (and thus local OSDs)? Or will there inherently be cross-DC traffic (other than replication)? Hope that made sense. Thanks for any words of wisdom. :) Sean Matheny New Zealand eScience Infrastructure (NeSI) _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io
