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wiki/concepts/Node-Classes.md
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title: "Node Classes"
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type: concept
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tags: [Kubernetes, Karpenter, EC2, Instance-Configuration]
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sources: []
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last_updated: 2026-04-19
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---
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## Definition
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Node Classes 是 Karpenter 的核心组件,定义 EC2 实例的 provisioning 配置细节。
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## Key Attributes
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- **子网**:实例部署的 subnet
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- **节点角色**:IAM 角色和策略
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- **AMI**:Amazon Machine Image(可使用 EKS 优化 AMI 或自定义 AMI)
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- **安全组**:实例附加的安全组
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## Related Concepts
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- [[Node-Pools]]:定义调度约束和容量限制
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- [[Karpenter]]:使用 Node Classes 的 compute management tool
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- [[AMI]]:Amazon Machine Image
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## Aliases
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- Node Classes
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- Karpenter Node Classes
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