DevOps与Platform Engineering：从文化到平台

# templates/microservice/template.yaml
apiVersion: scaffolder.backstage.io/v1beta3
kind: Template
metadata:
  name: microservice-go
  title: Go Microservice
  description: 创建一个标准化的 Go 微服务项目，包含 CI/CD、Dockerfile 和 Kubernetes 部署清单
spec:
  owner: platform-team
  type: service

  parameters:
    - title: 服务基本信息
      required:
        - name
        - owner
        - description
      properties:
        name:
          title: 服务名称
          type: string
          description: 服务的唯一标识，将用于仓库、镜像和 Kubernetes 资源命名
          pattern: '^[a-z][a-z0-9-]{1,31}$'
        owner:
          title: 负责团队
          type: string
          description: 负责此服务的团队
          ui:field: OwnerPicker
          ui:options:
            allowedKinds:
              - Group
        description:
          title: 服务描述
          type: string
          description: 简要描述服务的功能

    - title: 基础设施配置
      required:
        - environment
      properties:
        environment:
          title: 目标环境
          type: string
          default: staging
          enum:
            - staging
            - production
          enumNames:
            - 预发布环境
            - 生产环境

  steps:
    - id: fetch-base
      name: 获取模板
      action: fetch:template
      input:
        url: ./skeleton
        values:
          name: ${{ parameters.name }}
          owner: ${{ parameters.owner }}
          description: ${{ parameters.description }}
          environment: ${{ parameters.environment }}

    - id: publish
      name: 发布到 Git 仓库
      action: publish:github
      input:
        allowedHosts: ['github.com']
        description: ${{ parameters.description }}
        repoUrl: github.com?owner=${{ parameters.owner }}&repo=${{ parameters.name }}
        defaultBranch: main
        repoVisibility: private

    - id: register
      name: 注册到服务目录
      action: catalog:register
      input:
        catalogInfoUrl: https://github.com/${{ parameters.owner }}/${{ parameters.name }}/blob/main/catalog-info.yaml

  output:
    links:
      - title: 仓库地址
        url: ${{ steps.publish.output.remoteUrl }}
      - title: 在目录中查看
        icon: catalog
        entityRef: ${{ steps.register.output.entityRef }}

# composite-resources/database-xrd.yaml
apiVersion: apiextensions.crossplane.io/v1
kind: CompositeResourceDefinition
metadata:
  name: standarddatabases.platform.example.com
spec:
  group: platform.example.com
  names:
    kind: StandardDatabase
    plural: standarddatabases
  claimNames:
    kind: DatabaseClaim
    plural: databaseclaims
  versions:
    - name: v1alpha1
      served: true
      referenceable: true
      schema:
        openAPIV3Schema:
          type: object
          properties:
            spec:
              type: object
              properties:
                engine:
                  type: string
                  enum: ["mysql", "postgresql"]
                  default: "postgresql"
                size:
                  type: string
                  enum: ["small", "medium", "large"]
                  default: "small"
                environment:
                  type: string
                  enum: ["staging", "production"]
              required:
                - environment

# composite-resources/database-claim.yaml
apiVersion: platform.example.com/v1alpha1
kind: DatabaseClaim
metadata:
  name: orders-db
  namespace: orders-service
spec:
  engine: postgresql
  size: medium
  environment: staging
  # 开发者只需声明需求，平台自动配置底层资源
  # 包括：实例规格、备份策略、网络策略、监控告警