doc: Update methods.rst

Based on the discussion in issue #5392 I added now this paragraph to this page.

Signed-off-by: Raffael Luthiger <r.luthiger@huanga.com>
(cherry picked from commit 9af86d250b34c03372544af2760e100b126e813e)

diff --git a/docs/source/installation/methods.rst b/docs/source/installation/methods.rst
index d146dce4b6a16aa45e86090b4dd0b3a300f4e440..7a927fd6c40e99a45643450ad001c2ed5a11513b 100644 (file)
--- a/docs/source/installation/methods.rst
+++ b/docs/source/installation/methods.rst
@@ -8,3 +8,5 @@ ceph-ansible can deploy Ceph either in a non-containerized context (via packages
 
    non-containerized
    containerized
+
+The difference here is that you don't have the rbd command on the host when using the containerized deployment so everything related to ceph needs to be executed within a container. So in the case there is software like e.g. Open Nebula which requires that the rbd command is accessible directly on the host (non-containerized) then you have to install the rbd command by yourself on those servers outside of containers. (Or make sure that this software somehow runs within containers as well and that it can access rbd.