Add config option for disabling reporting

charmcraft.yaml

@@ -212,3 +212,14 @@ config:
         automatically deduced from it).
         See https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/
       type: string
+    phone_home:
+      description: |
+        When disabled, Grafana will be configured to not send anonymous usage statistics to stats.grafana.org, nor
+        periodically check for updates.
+        It is very helpful to the Grafana project, so please leave this enabled.
+        
+        When enabled, Grafana will use its default values for analytics.
+        
+        Ref: https://grafana.com/docs/grafana/latest/setup-grafana/configure-grafana/#analytics
+      type: boolean
+      default: true

src/charm.py

@@ -752,7 +752,7 @@ def _generate_grafana_config(self) -> str:
         can be set in ENV variables, but leave for expansion later so we can
         hide auth secrets
         """
-        configs = [self._generate_tracing_config()]
+        configs = [self._generate_tracing_config(), self._generate_analytics_config()]
         if self.has_db:
             configs.append(self._generate_database_config())
         else:
@@ -799,6 +799,27 @@ def _generate_tracing_config(self) -> str:
         ret = data.getvalue()
         return ret
 
+    def _generate_analytics_config(self) -> str:
+        """Generate analytics configuration.
+
+        Returns:
+            A string containing the analytics config to be stubbed into the config file.
+        """
+        if self.config["phone_home"]:
+            return ""
+        config_ini = configparser.ConfigParser()
+        # Ref: https://grafana.com/docs/grafana/latest/setup-grafana/configure-grafana/#analytics
+        config_ini["analytics"] = {
+            "reporting_enabled": "false",
+            "check_for_updates": "false",
+            "check_for_plugin_updates": "false",
+        }
+
+        data = StringIO()
+        config_ini.write(data)
+        ret = data.getvalue()
+        return ret
+
     def _generate_database_config(self) -> str:
         """Generate a database configuration.