Elastic Container Instance:Annotations for Elastic Container Instance-based pods

How annotations work

Annotations covered in this reference apply only to pods scheduled to virtual nodes (elastic container instances). They have no effect on pods scheduled to regular nodes.

Annotations take effect only at pod creation time. Adding or modifying annotations on an existing pod has no effect.

Add annotations to spec.template.metadata.annotations in your workload manifest, not to the top-level metadata. The following Deployment shows the correct location:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx
spec:
  replicas: 1
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
      annotations:
        k8s.aliyun.com/eci-use-specs: "2-4Gi,4-8Gi,ecs.c6.xlarge"  # Add ECI annotations here
    spec:
      containers:
      - name: nginx
        image: nginx

To inspect annotations on a running pod, run kubectl describe pod <pod-name>.

Annotations added at pod creation

Annotations added by the system

After ECI schedules and creates a pod, the system writes the following read-only annotations. Run kubectl describe pod <pod-name> to view them.