View Kubernetes objects in a namespace

MKE administrators can filter the view of Kubernetes objects by the namespace that the objects are assigned to, specifying a single namespace or all available namespaces. This topic describes how to deploy services to two newly created namespaces and then view those services, filtered by namespace.

To create two namespaces:

1. Log in to the MKE web UI as an administrator.

2. From the left-side navigation panel, click Kubernetes.

3. Click Create to open the Create Kubernetes Object page.

4. Leave the Namespace drop-down blank.

5. In the Object YAML editor, paste the following YAML code:

   apiVersion: v1
   kind: Namespace
   metadata:
     name: blue
   ---
   apiVersion: v1
   kind: Namespace
   metadata:
     name: green
   

6. Click Create to create the blue and green namespaces.

To deploy services:

1. Create a NodePort service in the blue namespace:

   1. From the left-side navigation panel, navigate to Kubernetes > Create.

   2. In the Namespace drop-down, select blue.

   3. In the Object YAML editor, paste the following YAML code:

      apiVersion: v1
      kind: Service
      metadata:
        name: app-service-blue
        labels:
          app: app-blue
      spec:
        type: NodePort
        ports:
          - port: 80
            nodePort: 32768
        selector:
          app: app-blue
      

   4. Click Create to deploy the service in the blue namespace.

2. Create a NodePort service in the green namespace:

   1. From the left-side navigation panel, navigate to Kubernetes > Create.

   2. In the Namespace drop-down, select green.

   3. In the Object YAML editor, paste the following YAML code:

      apiVersion: v1
      kind: Service
      metadata:
        name: app-service-green
        labels:
          app: app-green
      spec:
        type: NodePort
        ports:
          - port: 80
            nodePort: 32769
        selector:
          app: app-green
      

   4. Click Create to deploy the service in the green namespace.

To view the newly created services:

1. In the left-side navigation panel, click Namespaces.

2. In the upper-right corner, click the Set context for all namespaces toggle. The indicator in the left-side navigation panel under Namespaces changes to All Namespaces.

3. Click Services to view your services.

Filter the view by namespace:

1. In the left-side navigation panel, click Namespaces.

2. Hover over the blue namespace and click Set Context. The indicator in the left-side navigation panel under Namespaces changes to blue.

3. Click Services to view the app-service-blue service. Note that the app-service-green service does not display.

Perform the forgoing steps on the green namespace to view only the services deployed in the green namespace.