document provider specific configurations

Signed-off-by: greg pereira <[email protected]>

Author: Gregory-Pereira

config/charts/inferencepool/README.md

@@ -127,6 +127,32 @@ The following table list the configurable parameters of the chart.
 | `provider.name`                             | Name of the Inference Gateway implementation being used. Possible values: [`gke`, `none`, `istio`]. Defaults to `none`.                   |
 | `inferenceExtension.enableLeaderElection`   | Enable leader election for high availability. When enabled, only one EPP pod (the leader) will be ready to serve traffic. It is recommended to set `inferenceExtension.replicas` to a value greater than 1 when this is set to `true`. Defaults to `false`. |
 
+### Provider Specific Configuration
+
+This section should document any Gateway provider specific values configurations.
+
+#### GKE
+
+These are the options available to you with `provider.name` set to `gke`:
+
+| **Parameter Name**                          | **Description**                                                                                                        |
+|---------------------------------------------|------------------------------------------------------------------------------------------------------------------------|
+| `gke.monitoringSecret.name`            | The name of the monitoring secret to be used. Defaults to `inference-gateway-sa-metrics-reader-secret`. |
+| `gke.monitoringSecret.namespace`            | The namespace that the monitoring secret lives in. Defaults to `default`. |
+
+
+#### Istio
+
+These are the options available to you with `provider.name` set to `istio`:
+
+| **Parameter Name**                          | **Description**                                                                                                        |
+|---------------------------------------------|------------------------------------------------------------------------------------------------------------------------|
+| `istio.destinationRule.enabled`            | Enable creation of an Istio DestinationRule to configure traffic routing. |
+| `istio.destinationRule.host`            | Custom host value for the destination rule. If not set this will use the default value which is derrived from the epp service name and release namespace to gerenate a valid service address. |
+| `istio.destinationRule.trafficPolicy`            | Configure a mesh-wide traffic policy. |
+| `istio.destinationRule.subsets`            | Define subsets for versioned routing (e.g., by labels). |
+| `istio.destinationRule.exportTo`            | Control which namespaces can access this DestinationRule. |
+| `istio.destinationRule.workloadSelector`            | Apply only to specific workloads (via selector labels). |
 
 ## Notes
 

config/charts/inferencepool/templates/istio.yaml

@@ -1,6 +1,6 @@
 {{- if eq .Values.provider.name "istio" }}
----
 {{- if .Values.istio.destinationRule.enabled }}
+---
 apiVersion: networking.istio.io/v1beta1
 kind: DestinationRule
 metadata: