Auto-sync: update nexus workspace

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2026-04-29 15:44:38 +08:00
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---
title: "Cross-account ECS Deploy Runner Role"
type: entity
entity_type: product
tags:
- Terraform
- IAM
- ECS
- Deployment
- AWS
sources:
- ctp-topic-16-cross-account-terraform-modules.md
last_updated: 2026-05-15
---
## Overview
Cross-account ECS Deploy Runner Role 是部署在目标 AWS 账号中的一种 IAM 角色,允许 Shared Account 的 ECS Deploy Runner 通过 Assume Role 获取在该账号内执行 Terraform 资源部署的权限。
## Purpose
这是跨账号 Terraform 部署的第二个核心角色(与 [[TF-State-Bucket-Accessor]] 并列),专门用于**执行**资源创建/更新操作,而非读取状态文件。
## Permission Model
| 角色 | 用途 | 托管位置 |
|------|------|---------|
| [[TF-State-Bucket-Accessor]] | 读取/写入 Terraform 状态文件 | 目标账号 |
| **Cross-account ECS Deploy Runner Role** | 执行资源部署plan/apply | 目标账号 |
两个角色各司其职,严格遵循最小权限原则。
## Relationship with cross-account.json
`cross-account.json` 是部署在模块目录中的**标记文件**(约定俗成),用于告知 Jenkins 该模块需要跨账号部署,从而触发对 [[ECS-Deploy-Runner]] 的调用EDR 再通过该角色获取目标账号的部署权限。
## Relationships
- [[ECS-Deploy-Runner]] ← assumes ← [[Cross-account-ECS-Deploy-Runner-Role]]
- [[TF-State-Bucket-Accessor]] ← sibling_role ← [[Cross-account-ECS-Deploy-Runner-Role]]
- [[cross-account.json]] ← triggers ← [[Cross-account-ECS-Deploy-Runner-Role]]
## Related Concepts
- [[Assume-Role]]:跨账号身份切换的核心机制
- [[Blast-Radius]]:最小权限角色设计限制了安全影响范围
- [[Cross-account-Terraform-Modules]]:该角色是跨账号 Terraform 部署方案的核心组件