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doc/cephfs/nfs: add ganesha configuration hierarchy

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Fixes: https://tracker.ceph.com/issues/50904
Signed-off-by: Varsha Rao <varao@redhat.com>
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Varsha Rao 2021-05-20 18:01:12 +05:30
parent 557d2b8314
commit e82791a097
1 changed files with 47 additions and 0 deletions
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doc/cephfs/fs-nfs-exports.rst
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@ -16,6 +16,53 @@ Requirements
.. note:: From Pacific, the nfs mgr module must be enabled prior to use. .. note:: From Pacific, the nfs mgr module must be enabled prior to use.
Ganesha Configuration Hierarchy
===============================
Cephadm and rook starts nfs-ganesha daemon with `bootstrap configuration`
containing minimal ganesha configuration, creates empty rados `common config`
object in `nfs-ganesha` pool and watches this config object. The `mgr/nfs`
module adds rados export object urls to the common config object. If cluster
config is set, it creates `user config` object containing custom ganesha
configuration and adds it url to common config object.
.. ditaa::
rados://$pool/$namespace/export-$i rados://$pool/$namespace/userconf-nfs.$cluster_id
(export config) (user config)
+----------+ +----------+ +----------+ +---------------------------+
| | | | | | | |
| export-1 | | export-2 | | export-3 | | userconf-nfs.$cluster_id |
| | | | | | | |
+----+-----+ +----+-----+ +-----+----+ +-------------+-------------+
^ ^ ^ ^
| | | |
+--------------------------------+-------------------------+
%url |
|
+--------+--------+
| | rados://$pool/$namespace/conf-nfs.$svc
| conf+nfs.$svc | (common config)
| |
+--------+--------+
^
|
watch_url |
+----------------------------------------------+
| | |
| | | RADOS
+----------------------------------------------------------------------------------+
| | | CONTAINER
watch_url | watch_url | watch_url |
| | |
+--------+-------+ +--------+-------+ +-------+--------+
| | | | | | /etc/ganesha/ganesha.conf
| nfs.$svc.a | | nfs.$svc.b | | nfs.$svc.c | (bootstrap config)
| | | | | |
+----------------+ +----------------+ +----------------+
Create NFS Ganesha Cluster Create NFS Ganesha Cluster
========================== ==========================