Container Service for Kubernetes:Specify specifications to create an Elastic Container Instance

Example 1: Specify GPU specifications

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:
        k8s.aliyun.com/eci-use-specs: "ecs.gn6i-c4g1.xlarge,ecs.gn6i-c8g1.2xlarge" # Specify a maximum of five GPU-accelerated ECS instance types at a time. 
    spec:
      containers:
      - name: nginx
        image: registry.cn-shanghai.aliyuncs.com/eci_open/nginx:1.14.2
        resources:
            limits:
              nvidia.com/gpu: "1" # The number of GPUs required by the Nginx container. The GPUs are shared. 
        ports:
        - containerPort: 80
      - name: busybox
        image: registry.cn-shanghai.aliyuncs.com/eci_open/busybox:1.30
        command: ["sleep"]
        args: ["999999"]
        resources:
            limits:
              nvidia.com/gpu: "1" # The number of GPUs required by the BusyBox container. The GPUs are shared.

Example 2: Specify two types of specifications simultaneously

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:
        k8s.aliyun.com/eci-use-specs: 2-4Gi,ecs.c5.large,ecs.c6.large  # Sets the specifications that you want to use to create the pod. Replace the value by using the actual specifications.
    spec:
      containers:
      - name: nginx
        image: registry.cn-shanghai.aliyuncs.com/eci_open/nginx:1.14.2
        ports:
        - containerPort: 80

Overview of creation methods

You can use different methods to create pods based on your business and usage scenarios. These methods correspond to different billing modes. For more information, see Billing of elastic container instances.

Optimize usage costs

You can use pay-as-you-go elastic container instances together with preemptible elastic container instances, reserved instances, and savings plans to reduce costs based on your business requirements.

• Preemptible elastic container instances can be used for stateless and fault-tolerant workloads. For more information, see Create a preemptible elastic container instance.

• For long-term stable workloads, we recommend that you use reserved instances or savings plans to offset the bills of pods. The following methods can be used to offset your bills based on the billing basis of pods:

  • Pods for which you are charged based on the number of vCPUs and memory size: General-purpose savings plans can be used.

  • Pods for which you are charged based on the ECS instance types: General-purpose savings plans, ECS compute savings plans, and reserved instances can be used.

  You can select an offset method based on your elastic container instances. For more information, see Use reserved instances and Use savings plans.

Solutions to insufficient resources

Elastic Container Instance provides cloud resources for containers. When you create a large number of pods, some resources in the specified region and zone may be insufficient. To ensure that the pods can be created, we recommend that you specify multiple pod specifications and multiple vSwitches that are deployed in different zones. For more information, see the following topics:

• Configure multiple zones to create a pod

• Create pods by specifying multiple specifications