diff --git a/lib/ansible/plugins/callback/grafana_annotations.py b/lib/ansible/plugins/callback/grafana_annotations.py
index 4f028acf241..d1d6ed82e7d 100644
--- a/lib/ansible/plugins/callback/grafana_annotations.py
+++ b/lib/ansible/plugins/callback/grafana_annotations.py
@@ -48,6 +48,7 @@ DOCUMENTATION = """
         ini:
           - section: callback_grafana_annotations
             key: grafana_url
+        type: string
       validate_certs:
         description: validate the SSL certificate of the Grafana server. (For HTTPS url)
         env:
@@ -68,6 +69,7 @@ DOCUMENTATION = """
           - section: callback_grafana_annotations
             key: http_agent
         default: 'Ansible (grafana_annotations callback)'
+        type: string
       grafana_api_key:
         description: Grafana API key, allowing to authenticate when posting on the HTTP API.
                      If not provided, grafana_login and grafana_password will
@@ -77,6 +79,7 @@ DOCUMENTATION = """
         ini:
           - section: callback_grafana_annotations
             key: grafana_api_key
+        type: string
       grafana_user:
         description: Grafana user used for authentication. Ignored if grafana_api_key is provided.
         env:
@@ -85,6 +88,7 @@ DOCUMENTATION = """
           - section: callback_grafana_annotations
             key: grafana_user
         default: ansible
+        type: string
       grafana_password:
         description: Grafana password used for authentication. Ignored if grafana_api_key is provided.
         env:
@@ -93,6 +97,7 @@ DOCUMENTATION = """
           - section: callback_grafana_annotations
             key: grafana_password
         default: ansible
+        type: string
       grafana_dashboard_id:
         description: The grafana dashboard id where the annotation shall be created.
         env:
@@ -100,13 +105,17 @@ DOCUMENTATION = """
         ini:
           - section: callback_grafana_annotations
             key: grafana_dashboard_id
-      grafana_panel_id:
-        description: The grafana panel id where the annotation shall be created.
+        type: integer
+      grafana_panel_ids:
+        description: The grafana panel ids where the annotation shall be created.
+                     Give a single integer or a comma-separated list of integers.
         env:
-          - name: GRAFANA_PANEL_ID
+          - name: GRAFANA_PANEL_IDS
         ini:
           - section: callback_grafana_annotations
-            key: grafana_panel_id
+            key: grafana_panel_ids
+        default: []
+        type: list
 """
 
 
@@ -181,7 +190,7 @@ class CallbackModule(CallbackBase):
         self.grafana_user = self.get_option('grafana_user')
         self.grafana_password = self.get_option('grafana_password')
         self.dashboard_id = self.get_option('grafana_dashboard_id')
-        self.panel_id = self.get_option('grafana_panel_id')
+        self.panel_ids = self.get_option('grafana_panel_ids')
 
         if self.grafana_api_key:
             self.headers['Authorization'] = "Bearer %s" % self.grafana_api_key
@@ -204,11 +213,7 @@ class CallbackModule(CallbackBase):
             'text': text,
             'tags': ['ansible', 'ansible_event_start', self.playbook]
         }
-        if self.dashboard_id:
-            data["dashboardId"] = int(self.dashboard_id)
-        if self.panel_id:
-            data["panelId"] = int(self.panel_id)
-        self._send_annotation(json.dumps(data))
+        self._send_annotation(data)
 
     def v2_playbook_on_stats(self, stats):
         end_time = datetime.now()
@@ -233,11 +238,7 @@ class CallbackModule(CallbackBase):
             'text': text,
             'tags': ['ansible', 'ansible_report', self.playbook]
         }
-        if self.dashboard_id:
-            data["dashboardId"] = int(self.dashboard_id)
-        if self.panel_id:
-            data["panelId"] = int(self.panel_id)
-        self._send_annotation(json.dumps(data))
+        self._send_annotations(data)
 
     def v2_runner_on_failed(self, result, **kwargs):
         text = PLAYBOOK_ERROR_TXT.format(playbook=self.playbook, hostname=self.hostname,
@@ -249,15 +250,21 @@ class CallbackModule(CallbackBase):
             'tags': ['ansible', 'ansible_event_failure', self.playbook]
         }
         self.errors += 1
+        self._send_annotations(data)
+
+    def _send_annotations(self, data):
         if self.dashboard_id:
             data["dashboardId"] = int(self.dashboard_id)
-        if self.panel_id:
-            data["panelId"] = int(self.panel_id)
-        self._send_annotation(json.dumps(data))
+        if self.panel_ids:
+            for panel_id in self.panel_ids:
+                data["panelId"] = int(panel_id)
+                self._send_annotation(data)
+        else:
+            self._send_annotation(data)
 
     def _send_annotation(self, annotation):
         try:
-            response = open_url(self.grafana_url, data=annotation, headers=self.headers,
+            response = open_url(self.grafana_url, data=json.dumps(annotation), headers=self.headers,
                                 method="POST",
                                 validate_certs=self.validate_grafana_certs,
                                 url_username=self.grafana_user, url_password=self.grafana_password,