如何配置 aws EKS 集群以使用现货实例和按需实例

Question

我希望以这样的方式配置我的 Elastic Kubernetes 服务集群，只要可用，它将使用现货实例，如果现货实例不可用，它将使用普通的按需实例

Answer 1

如果您使用 Karpenter 作为集群自动缩放器，您可以通过在

on-demand

之后添加到配置程序要求中的

spot

容量类型来实现该缺陷功能：

key: "karpenter.sh/capacity-type" # If not included, the webhook for the AWS cloud provider will default to on-demand
operator: In
values: ["spot", "on-demand"]

查看完整的示例（相关部分是要求中的最后一个键）：

apiVersion: karpenter.sh/v1alpha5
kind: Provisioner
metadata:
  name: default
spec:
  # If nil, the feature is disabled, nodes will never expire
  ttlSecondsUntilExpired: 2592000 # 30 Days = 60 * 60 * 24 * 30 Seconds;

  # If nil, the feature is disabled, nodes will never scale down due to low utilization
  ttlSecondsAfterEmpty: 30

  # Provisioned nodes will have these taints
  # Taints may prevent pods from scheduling if they are not tolerated
  taints:
    - key: example.com/special-taint
      effect: NoSchedule

  # Labels are arbitrary key-values that are applied to all nodes
  labels:
    billing-team: my-team

  # Requirements that constrain the parameters of provisioned nodes.
  # These requirements are combined with pod.spec.affinity.nodeAffinity rules.
  # Operators { In, NotIn } are supported to enable including or excluding values
  requirements:
    - key: "node.kubernetes.io/instance-type"
      operator: In
      values: ["m5.large", "m5.2xlarge"]
    - key: "topology.kubernetes.io/zone"
      operator: In
      values: ["us-west-2a", "us-west-2b"]
    - key: "kubernetes.io/arch"
      operator: In
      values: ["arm64", "amd64"]
    - key: "karpenter.sh/capacity-type" # If not included, the webhook for the AWS cloud provider will default to on-demand
      operator: In
      values: ["spot", "on-demand"]

Answer 2

我知道回答这个问题有点晚了，但这就是你想要做的，是我在这篇博客中描述的吗？

使用 KEDA 和 Karpenter 实现无限缩放和弹性