add-graphite-basic-auth

content/docs/2.3/scalers/graphite.md

@@ -30,6 +30,16 @@ triggers:
 - `threshold` - Value to start scaling for
 - `queryTime` - Query Time to from Seconds/Minutes
 
+### Authentication Parameters
+
+Graphite Scaler supports three types of authentication - basic authentication.
+
+You can use `TriggerAuthentication` CRD to configure the authentication.`authModes: "basic"` Specify `authModes` and other trigger parameters along with secret credentials in `TriggerAuthentication` as mentioned below:
+
+**Basic authentication:**
+- `authMode`: It must contain `basic` in case of Basic Authentication. Specify this in trigger configuration.
+- `username`: This is a required field. Provide the username to be used for basic authentication.
+- `password`: Provide the password to be used for authentication. For convenience, this has been marked optional, because many applications implement basic auth with a username as apikey and password as empty.
 
 ### Example
 
@@ -51,3 +61,53 @@ spec:
       query: stats.counters.http.hello-world.request.count.count
       queryTime: '-10Minutes'
 ```
+
+
+Here is an example of scaling with the Graphite scaler with basic authentication by defining the `Secret` and `TriggerAuthentication` as follows:
+
+```yaml
+apiVersion: v1
+kind: Secret
+metadata:
+  name: keda-graphite-secret
+  namespace: default
+data:
+  username: "username"
+  password: "password"
+---
+apiVersion: keda.sh/v1alpha1
+kind: TriggerAuthentication
+metadata:
+  name: keda-graphite-creds
+  namespace: default
+spec:
+  secretTargetRef:
+    - parameter: username
+      name: keda-graphite-secret
+      key: username
+    - parameter: password
+      name: keda-graphite-secret
+      key: password
+---
+apiVersion: keda.sh/v1alpha1
+kind: ScaledObject
+metadata:
+  name: graphite-scaledobject
+  namespace: keda
+  labels:
+    deploymentName: dummy
+spec:
+  maxReplicaCount: 12
+  scaleTargetRef:
+    name: dummy
+  triggers:
+    - type: graphite
+      metadata:
+        serverAddress: http://<graphite-host>:9090
+      metricName: request-count
+      threshold: '100'
+      query: stats.counters.http.hello-world.request.count.count
+      queryTime: '-10Minutes'
+      authenticationRef:
+        name: keda-graphite-creds
+```