Configuring a Blocklist/Trustlist Access Policy for a LoadBalancer Service

Prerequisites

• A Kubernetes cluster is available and the cluster version meets the following requirements:
  • v1.23: v1.23.12-r0 or later
  • v1.25: v1.25.7-r0 or later
  • v1.27: v1.27.4-r0 or later
  • v1.28: v1.28.2-r0 or later
  • Other clusters of later versions
• An IP address group has been created on the ELB console. For details, see Creating an IP Address Group.

Using the CCE Console

1. Log in to the CCE console and click the cluster name to access the cluster console.
2. Choose Services & Ingresses in the navigation pane, click the Services tab, and click Create Service in the upper right corner.
3. Configure Service parameters.
   • Service Name: Enter a service name, for example, service-acl.
   • Service Type: Select LoadBalancer.
   • Service Affinity: Select cluster level or node level as needed. For details about the differences, see externalTrafficPolicy (Service Affinity).
   • Selector: Add a label and click Confirm. The Service will use this label to select pods. You can also click Reference Workload Label to use the label of an existing workload. In the dialog box that is displayed, select a workload and click OK.
   • Load Balancer

     Select a load balancer to be accessed. Only load balancers in the same VPC as the cluster are supported. If no load balancer is available, click Create Load Balancer to create one on the ELB console. Alternatively, select Auto create to create a load balancer. For details about parameter settings, see Table 1.

   • Health Check: defaults to Global health check. You can configure this parameter as needed.
   • Ports
     • Protocol: protocol used by the Service.
     • Service Port: port used by the Service. The port number ranges from 1 to 65535.
     • Container Port: listener port of the workload. For example, Nginx uses port 80 by default.
   • Access Control
     • Allow all IP addresses: No access control is configured.
     • Trustlist: Only the selected IP address group can access the load balancer.
     • Blocklist: The selected IP address group cannot access the load balancer.

4. Click OK.

Using kubectl

apiVersion: v1 
kind: Service 
metadata: 
  name: nginx
  annotations:
    kubernetes.io/elb.id: <your_elb_id>                    # Load balancer ID. Replace it with the actual value.
    kubernetes.io/elb.class: performance                   # Load balancer type
    kubernetes.io/elb.acl-id: <your_acl_id>               # ID of an IP address group for accessing a load balancer
    kubernetes.io/elb.acl-status: 'on'                  # Enable access control.
    kubernetes.io/elb.acl-type: 'white'                   # Trustlist for access control
spec:
  selector: 
     app: nginx
  ports: 
  - name: service0 
    port: 80
    protocol: TCP 
    targetPort: 80
  type: LoadBalancer