Binding a Security Group to a Pod Using an Annotation

Application Scenarios

In Cloud Native Network 2.0, pods use ENIs or sub-ENIs of the VPC. You can configure a security group for a pod using a pod's annotation.

Configure a security group in either of the following cases:

To newly bind a security group to a pod, use annotation yangtse.io/security-group-ids.
To bind more security groups to a pod, use annotation yangtse.io/additional-security-group-ids.

Note

The priority of the security group bound to a pod using annotation yangtse.io/security-group-ids is higher than those of the security groups in the security group policy (SecurityGroup) and cluster container network configuration (NetworkAttachmentDefinition).

Prerequisites

A CCE Turbo cluster is available and the cluster version meets the following requirements:

v1.23: v1.23.16-r0 or later
v1.25: v1.25.11-r0 or later
v1.27: v1.27.8-r0 or later
v1.28: v1.28.6-r0 or later
v1.29: v1.29.2-r0 or later
Versions later than v1.29

Using kubectl

Create a workload with a security group configured. The security group bound to the pod is subject to the one configured using an annotation.

Note

If the pod has been bound to a security group, the configuration will be overwritten.

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx
spec:
  replicas: 3
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
      annotations:
        yangtse.io/security-group-ids: *****  # Security group ID. Use commas (,) to separate multiple security groups.
    spec:
      containers:
        - name: container-0
          image: nginx:alpine
          resources:
            limits:
              cpu: 100m
              memory: 200Mi
            requests:
              cpu: 100m
              memory: 200Mi
      imagePullSecrets:
        - name: default-secret

Add an additional security group for the workload.

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx
spec:
  replicas: 3
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
      annotations:
        yangtse.io/additional-security-group-ids: *****  # Security group ID. Use commas (,) to separate multiple security groups.
    spec:
      containers:
        - name: container-0
          image: nginx:alpine
          resources:
            limits:
              cpu: 100m
              memory: 200Mi
            requests:
              cpu: 100m
              memory: 200Mi
      imagePullSecrets:
        - name: default-secret

Table 1 Annotations for configuring a security group for a pod
Annotation	Description	Value Range
yangtse.io/security-group-ids	Configure a security group for a pod. The security group of the pod is subject to the one configured using this annotation. If the pod already has a security group, the original security group will be overwritten.	Security group IDs. A maximum of five IDs are allowed. Use commas (,) to separate multiple security groups.
yangtse.io/additional-security-group-ids	Add more security groups to a pod.	Security group IDs. The total number of newly added security group IDs and existing security group IDs cannot exceed 5. Use commas (,) to separate multiple security groups.

Parent topic: Cloud Native Network 2.0 Settings

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Binding a Security Group to a Workload Using a Security Group Policy

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