Elastic Container Instance:Limit the inbound and outbound bandwidth of pods

How it works

Bandwidth limits are applied via annotations on the pod metadata. The two supported annotations are:

Unit conversion: Annotation values use storage-style units (B, K, KB, M, MB, G, GB, T, or TB). ECI interprets the value as bytes per second (Bps) and converts it to a network bandwidth rate. For example, 40M is treated as 40 MBps, which equals 320 Mbit/s. If you omit the unit, ECI defaults to B (bytes).

Set bandwidth limits on a pod

Add the bandwidth annotations in the metadata.annotations section of your pod spec. For a Deployment, place the annotations in spec.template.metadata.annotations — not in the top-level metadata of the Deployment itself.

The following example creates a Deployment with a 40 M ingress limit and a 10 M egress limit:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: test
  labels:
    app: test
spec:
  replicas: 2
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      name: nginx-test
      labels:
        app: nginx
        alibabacloud.com/eci: "true"
      annotations:
        kubernetes.io/ingress-bandwidth: 40M    # Limit inbound bandwidth to 320 Mbit/s
        kubernetes.io/egress-bandwidth: 10M     # Limit outbound bandwidth of the pod
    spec:
      containers:
      - name: nginx
        image: registry.cn-shanghai.aliyuncs.com/eci_open/nginx:1.14.2
        ports:
        - containerPort: 80

Limitations