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wiki/concepts/Jenkins-Multi-Branch-Pipeline.md
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title: "Jenkins Multi-Branch Pipeline"
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type: concept
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tags: ["CI/CD", "Jenkins", "Automation", "DevOps"]
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sources: ["learning-sessions-standard-amis-updates-20231205-160324-meeting-recording-2"]
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last_updated: 2026-05-08
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---
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## Definition
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Jenkins 多分支流水线(Jenkins Multi-Branch Pipeline)是 Jenkins 的流水线即代码功能,支持根据 Git 分支自动创建和管理流水线。在 Micro Focus AWS Landing Zone 中,用于 AMI 构建和 IaC 部署的双重场景。
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## Architecture Pattern
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- **Feature Branch Pipeline**:功能分支上变更 → 开发测试 → 合并到集成分支
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- **Integration Branch Pipeline**:集成分支合并 → 构建 → 测试 → 发布
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- **Jenkinsfile**:在代码仓库中定义流水线即代码
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## Dual Use Cases
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### AMI 构建
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1. Jenkins 扫描 Git 仓库的分支
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2. 每个分支触发独立流水线
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3. HashiCorp Packer 执行镜像构建
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4. 脚本化测试 + AWS Inspector 安全扫描
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5. 跨区域 AMI 复制和共享
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### IaC 部署(Terraform/TerraGrunt)
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1. GitHub 仓库变更触发 Jenkins
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2. Terraform Plan 输出变更计划
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3. 审批后执行 Terraform Apply
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4. 跨账户角色切换部署
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## Connections
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- [[Jenkins]] — 托管多分支流水线的 CI/CD 平台
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- [[Terraform-IaC]] — 流水线编排的 IaC 工具
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- [[Terragrunt]] — 配合 Terraform 的 DRY 工具
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- [[Amazon-Machine-Image]] — 多分支流水线构建的产物
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