diff --git a/infrastructure-playbooks/cephadm-adopt.yml b/infrastructure-playbooks/cephadm-adopt.yml
index 282514ad41..5b48952961 100644
--- a/infrastructure-playbooks/cephadm-adopt.yml
+++ b/infrastructure-playbooks/cephadm-adopt.yml
@@ -1517,8 +1517,8 @@
       environment:
         CEPHADM_IMAGE: '{{ ceph_docker_registry }}/{{ ceph_docker_image }}:{{ ceph_docker_image_tag }}'
 
-    - name: with dashboard enabled
-      when: dashboard_enabled | bool
+    - name: With dashboard enabled
+      when: dashboard_enabled | bool and groups.get(monitoring_group_name, []) | length > 0
       block:
         - name: Update the placement of alertmanager hosts
           ceph_orch_apply:
@@ -1528,6 +1528,7 @@
               service_id: "{{ ansible_facts['hostname'] }}"
               placement:
                 label: "{{ monitoring_group_name }}"
+                count: "{{ groups.get(monitoring_group_name, []) | length }}"
               {% if grafana_server_addr is defined %}
               networks:
               - {{ grafana_server_addr }}
@@ -1542,8 +1543,19 @@
           environment:
             CEPHADM_IMAGE: '{{ ceph_docker_registry }}/{{ ceph_docker_image }}:{{ ceph_docker_image_tag }}'
 
-        - name: update the placement of prometheus hosts
-          command: "{{ cephadm_cmd }} shell -k /etc/ceph/{{ cluster }}.client.admin.keyring --fsid {{ fsid }} -- ceph orch apply prometheus --placement='{{ groups.get(monitoring_group_name, []) | length }} label:{{ monitoring_group_name }}'"
+        - name: Update the placement of prometheus hosts
+          ceph_orch_apply:
+            fsid: "{{ fsid }}"
+            spec: |
+              service_name: prometheus
+              service_id: "{{ ansible_facts['hostname'] }}"
+              placement:
+                label: {{ monitoring_group_name }}
+                count: {{ groups.get(monitoring_group_name, []) | length }}
+              {% if prometheus_port is defined and prometheus_port != 9095 %}
+              spec:
+                port: {{ prometheus_port }}
+              {% endif %}
           changed_when: false
           environment:
             CEPHADM_IMAGE: '{{ ceph_docker_registry }}/{{ ceph_docker_image }}:{{ ceph_docker_image_tag }}'