instances:
  - name: master-1
    ami: ubuntu-24.04                  # ✅ 可用 ami-xxx 或关键词（如 ubuntu-22.04）
    type: t3a.xlarge
    disk_size_gb: 20
    sg_names: ["dev-vpc-1-default-inbound"]
    subnet: dev-vpc-1-public-subnet-1
    lifecycle: spot                   # 可选: ondemand（默认）或 spot
    ttl: 1h                           # 可选: 标记生命周期（不会自动销毁）
    env: sit                          # 可选: dev/sit/prod 等环境标签
    owner: devops                     # 可选: 资源责任人标签
    associate_public_ip: true         # ✅ 明确配置是否需要公网 IP

  - name: slave-1
    ami: ubuntu-24.04
    type: t3.small
    sg_names: ["dev-vpc-2-default-inbound"]
    disk_size_gb: 20
    subnet: dev-vpc-2-public-subnet-1
    lifecycle: spot
    ttl: 1h
    env: sit
    owner: devops
    associate_public_ip: true

  - name: agent-1
    ami: ubuntu-24.04
    type: t3.micro
    disk_size_gb: 20
    subnet: dev-vpc-1-public-subnet-1
    sg_names: ["dev-vpc-1-default-inbound"]
    lifecycle: spot
    ttl: 1h
    env: sit
    owner: devops
    associate_public_ip: true

  - name: agent-2
    ami: ubuntu-24.04
    type: t3.micro
    disk_size_gb: 20
    subnet: dev-vpc-2-public-subnet-1
    sg_names: ["dev-vpc-2-default-inbound"]
    lifecycle: spot
    ttl: 1h
    env: sit
    owner: devops
    associate_public_ip: true