karpenter通过多个 NodePool + 标签调度实现“分布调度”

Step 1：创建 namespace
kubectl create namespace karpenter-ratio

Step 2：创建 EC2NodeClass（必须叫 default）

apiVersion: karpenter.k8s.aws/v1beta1
kind: EC2NodeClass
metadata:
name: default
spec:
amiFamily: AL2
role: KarpenterNodeRole # ⚠ 这里用你环境里的 role

subnetSelectorTerms:
- tags:
karpenter.sh/discovery: "*"

securityGroupSelectorTerms:
- tags:
karpenter.sh/discovery: "*"

tags:
eks-immersion-team: my-team

Step 3：创建 1 个 On-Demand NodePool

apiVersion: karpenter.sh/v1beta1
kind: NodePool
metadata:
name: ondemand
namespace: karpenter-ratio
spec:
template:
metadata:
labels:
eks-immersion-team: my-team
capacity-spread: "1"
spec:
nodeClassRef:
name: default
requirements:
- key: karpenter.sh/capacity-type
operator: In
values: ["on-demand"]

Step 4：创建Spot NodePool
apiVersion: karpenter.sh/v1beta1
kind: NodePool
metadata:
name: spot-1
namespace: karpenter-ratio
spec:
template:
metadata:
labels:
eks-immersion-team: my-team
capacity-spread: "2"
spec:
nodeClassRef:
name: default
requirements:
- key: karpenter.sh/capacity-type
operator: In
values: ["spot"]