Accessing ML APIs externally

If you want you can access ML APIs externally.

About this task

Earlier the Product Master - Machine learning (product master-ml) service was of the type Nodeport. Now, the service type has changed to ClusterIP. In this type, by default, the ports are not exposed. So, to now access the ML service externally through browser, you need to create a route through the Red Hat® OpenShift® web console.

Procedure

Edit the ML service network policy.

Add the following values in the ml-networkpolicy file in the ingress section.

namespaceSelector
matchLabels
policy-group.network.openshift.io/ingress

Example

apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: np-ml
  namespace: cpd-instance
spec:
  ingress:
  - from:
    - namespaceSelector:
        matchLabels:
          policy-group.network.openshift.io/ingress: ""
    - podSelector:
        matchLabels:
          app: productmaster-sch
    - podSelector:
        matchLabels:
          app: productmaster-wfl
    ports:
    - port: 5000
      protocol: TCP
    - port: 5010
      protocol: TCP
    - port: 5020
      protocol: TCP
    - port: 5030
      protocol: TCP
    - port: 50000
      protocol: TCP
  podSelector:
    matchLabels:
      app: productmaster-ml
  policyTypes:
  - Ingress

Create route through which you can access the ML service.
1. Log in to your Red Hat OpenShift instance as an administrator.
2. Click Networking > Routes > Create Route from the left panel.
3. Specify the following, and click Create.
  - Name - The route name.
  - Service - productmaster-ml-service
  - Port - 5000
4. Optional - To create a route through terminal, proceed as follows.
  1. Add the following value in the ML service route file.
    
    host
    
    The host name.
    
    namespace
    
    The namespace where you have installed the Product Master.
```
kind: Route
apiVersion: route.openshift.io/v1
metadata:
  name: ml-route
  namespace: ${PROJECT_CPD_INST_OPERANDS}
spec:
  host: <host>
  to:
    kind: Service
    name: productmaster-ml-service
    weight: 100
  port:
    targetPort: http
  wildcardPolicy: None
```
  2. Check if the route has been created successfully by using the following command.
```
oc get route | grep ml-route
```
    Output displays the name of the ML host. Access the route using the following URL:
```
http://<ML-host>/
```

Results

Click the new route, to see a label with location that contains a URL. Click this URL to access the ML service through a browser.