Add Flux warning to FGA doc (#3452)

* WIP Flux FGA warning

* added note about FGA and flux, closes influxdata/DAR#256

content/enterprise_influxdb/v1.7/guides/fine-grained-authorization.md

@@ -15,6 +15,12 @@ Use fine-grained authorization (FGA) in InfluxDB Enterprise to control user acce
 
 You must have [admin permissions](/influxdb/v1.7/administration/authentication_and_authorization/#admin-user-management) to set up FGA.
 
+{{% warn %}}
+#### FGA does not apply to Flux
+FGA does not restrict actions performed by Flux queries (both read and write).
+If using FGA, we recommend [disabling Flux](/enterprise_influxdb/v{{< current-version >}}/flux/installation/).
+{{% /warn %}}
+
 ## Set up fine-grained authorization
 
 1. [Enable authentication](/influxdb/v1.7/administration/authentication_and_authorization/#set-up-authentication) in your InfluxDB configuration file.

content/enterprise_influxdb/v1.8/guides/fine-grained-authorization.md

@@ -17,6 +17,12 @@ Use fine-grained authorization (FGA) in InfluxDB Enterprise to control user acce
 
 You must have [admin permissions](/influxdb/v1.8/administration/authentication_and_authorization/#admin-user-management) to set up FGA.
 
+{{% warn %}}
+#### FGA does not apply to Flux
+FGA does not restrict actions performed by Flux queries (both read and write).
+If using FGA, we recommend [disabling Flux](/enterprise_influxdb/v{{< current-version >}}/flux/installation/).
+{{% /warn %}}
+
 ## Set up fine-grained authorization
 
 1. [Enable authentication](/influxdb/v1.8/administration/authentication_and_authorization/#set-up-authentication) in your InfluxDB configuration file.

content/enterprise_influxdb/v1.9/guides/fine-grained-authorization.md

@@ -16,10 +16,18 @@ related:
 
 Use fine-grained authorization (FGA) in InfluxDB Enterprise to control user access at the database, measurement, and series levels.
 
-> **Note:** InfluxDB OSS controls access at the database level only.
+{{% note %}}
+**Note:** InfluxDB OSS controls access at the database level only.
+{{% /note %}}
 
 You must have [admin permissions](/enterprise_influxdb/v1.9/administration/authentication_and_authorization/#admin-user-management) to set up FGA.
 
+{{% warn %}}
+#### FGA does not apply to Flux
+FGA does not restrict actions performed by Flux queries (both read and write).
+If using FGA, we recommend [disabling Flux](/enterprise_influxdb/v{{< current-version >}}/flux/installation/).
+{{% /warn %}}
+
 ## Set up fine-grained authorization
 
 1. [Enable authentication](/enterprise_influxdb/v1.9/administration/authentication_and_authorization/#set-up-authentication) in your InfluxDB configuration file.
@@ -34,19 +42,25 @@ You must have [admin permissions](/enterprise_influxdb/v1.9/administration/authe
 
 3. Ensure that you can access the **meta node** API (port 8091 by default).
 
-    > In a typical cluster configuration, the HTTP ports for data nodes
-    > (8086 by default) are exposed to clients but the meta node HTTP ports are not.
-    > You may need to work with your network administrator to gain access to the meta node HTTP ports.
+    {{% note %}}
+In a typical cluster configuration, the HTTP ports for data nodes
+(8086 by default) are exposed to clients but the meta node HTTP ports are not.
+You may need to work with your network administrator to gain access to the meta node HTTP ports.
+    {{% /note %}}
 
 4. _(Optional)_ [Create roles](#manage-roles).
    Roles let you grant permissions to groups of users assigned to each role.
 
-    > For an overview of how users and roles work in InfluxDB Enterprise, see [InfluxDB Enterprise users](/enterprise_influxdb/v1.9/features/users/).
+    {{% note %}}
+For an overview of how users and roles work in InfluxDB Enterprise, see [InfluxDB Enterprise users](/enterprise_influxdb/v1.9/features/users/).
+    {{% /note %}}
 
 5. [Set up restrictions](#manage-restrictions).
    Restrictions apply to all non-admin users.
 
-    > Permissions (currently "read" and "write") may be restricted independently depending on the scenario.
+    {{% note %}}
+Permissions (currently "read" and "write") may be restricted independently depending on the scenario.
+    {{% /note %}}
 
 7. [Set up grants](#manage-grants) to remove restrictions for specified users and roles.