Documentation changes for updating non-ceph image service

Fixes: https://tracker.ceph.com/issues/68979
Signed-off-by: Shweta Bhosale <Shweta.Bhosale1@ibm.com>

diff --git a/doc/cephadm/upgrade.rst b/doc/cephadm/upgrade.rst
index 3a15c3ac6231d1ab3554e2980e4bd24d4cc12a1f..209fa15bd055b1fc54244c9d968d7be5d8c461bd 100644 (file)
--- a/doc/cephadm/upgrade.rst
+++ b/doc/cephadm/upgrade.rst
@@ -307,3 +307,19 @@ upgrading:
 
 You should now have all your Manager daemons on the new version and be able to
 specify the limiting parameters for the rest of the upgrade.
+
+
+Updating a non-Ceph image service with custom image
+====================================================
+
+To update a non-Ceph image service, run a command of the following form:
+
+.. prompt:: bash #
+
+  ceph orch update service <service_type> <image>
+
+For example:
+
+.. prompt:: bash #
+
+  ceph orch update service prometheus quay.io/prometheus/prometheus:v2.55.1