mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-27 16:50:23 +00:00
70 lines
2.1 KiB
Markdown
70 lines
2.1 KiB
Markdown
# Capabilities of a user required for ceph-csi in a Ceph cluster
|
|
|
|
Ceph uses the term _capabilities_ to describe authorizations for an
|
|
authenticated user
|
|
to exercise the functionality of the monitors, OSDs and metadata servers.
|
|
Capabilities can also restrict access to data within a pool or pool namespace.
|
|
A Ceph administrative user sets a user's capabilities when creating or
|
|
updating a user. In secret we have user id and user key and in order to
|
|
perform certain actions, the user needs to have some specific capabilities.
|
|
Hence, those capabilities are documented below.
|
|
|
|
## RBD
|
|
|
|
We have provisioner, controller expand and node stage secrets in storageclass.
|
|
For RBD the user needs to have the below Ceph capabilities:
|
|
|
|
```
|
|
mgr "profile rbd pool=csi"
|
|
osd "profile rbd pool=csi"
|
|
mon "profile rbd"
|
|
```
|
|
|
|
## CephFS
|
|
|
|
Similarly in CephFS, we have provisioner, controller expand and node stage
|
|
secrets in storageclass, the user needs to have the below mentioned ceph
|
|
capabilities:
|
|
|
|
```
|
|
mgr "allow rw"
|
|
osd "allow rw tag cephfs metadata=cephfs, allow rw tag cephfs data=cephfs"
|
|
mds "allow r fsname=cephfs path=/volumes, allow rws fsname=cephfs path=/volumes/csi"
|
|
mon "allow r fsname=cephfs"
|
|
```
|
|
|
|
To get more insights on capabilities of CephFS you can refer
|
|
[this document](https://ceph.readthedocs.io/en/latest/cephfs/client-auth/)
|
|
|
|
## Command to a create user with required capabilities
|
|
|
|
`USER`, `POOL` and `FS_NAME` with `SUB_VOL` variables below is subject to
|
|
change, please adjust them to your needs.
|
|
|
|
### create user for RBD
|
|
|
|
The command for provisioner and node stage secret for rbd will be same as
|
|
they have similar capability requirements.
|
|
|
|
```bash
|
|
USER=csi-rbd
|
|
POOL=csi
|
|
ceph auth get-or-create client.$USER \
|
|
mgr "profile rbd pool=$POOL" \
|
|
osd "profile rbd pool=$POOL"
|
|
mon "profile rbd"
|
|
```
|
|
|
|
### create user for CephFS
|
|
|
|
```bash
|
|
USER=csi-cephfs
|
|
FS_NAME=cephfs
|
|
SUB_VOL=csi
|
|
ceph auth get-or-create client.$USER \
|
|
mgr "allow rw" \
|
|
osd "allow rw tag cephfs metadata=$FS_NAME, allow rw tag cephfs data=$FS_NAME" \
|
|
mds "allow r fsname=$FS_NAME path=/volumes, allow rws fsname=$FS_NAME path=/volumes/$SUB_VOL" \
|
|
mon "allow r fsname=$FS_NAME"
|
|
```
|