概述
安全运维云基础设施：审查成本异常，验证故障转移，并确认资源已打标且在配额内，避免超支与单点失效。本工作流属于云基础设施领域，目标是catch cost and capacity anomalies early and confirm the failover path works before an incident forces it.以下步骤将指导你完成关键操作，并在每一步设置可验证的中间状态，确保最终结果可复现、可审计、可回滚。
步骤详解
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Review cost anomalies。 Compare the current spend against the forecast and investigate any service whose cost deviates beyond the threshold.预期状态：Anomalies are explained or corrected and the forecast is back in line.
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Verify failover。 Trigger a controlled failover to the secondary region and confirm the service stays available with acceptable latency.预期状态：Failover completes within the RTO and data loss stays within the RPO.
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Confirm tagging and quota。 List untagged resources and compare usage against quota with enough headroom for the next growth step.预期状态：All resources are tagged and headroom is documented for each quota.
每一步都包含明确的动作与预期状态。执行时请记录实际输出，与预期状态逐一对照。若某一步未达预期，应停下排查而非继续推进，避免问题向后传递放大。
验证与后续
验证方法：catch cost and capacity anomalies early and confirm the failover path works before an incident forces it.完成后，将本次执行的命令、输出与参数归档，并更新团队运行手册。若用于生产环境，请先在预发环境完整演练一次，并确认团队熟悉回滚路径与应急联系人。本工作流难度级别为进阶（intermediate），预计耗时约30分钟。该流程已通过结构化校验，步骤与决策点均与英文版本严格一致，可在本地按工作流步骤复现并核对结果。
代码示例
aws ce get-cost-and-usage --time-period Start=2026-10-01,End=2026-10-25 --metrics BlendedCost