概述
多区域故障转移实现工作流是一个高级难度的工作流。实现多区域故障转移，包含 DNS 路由、数据复制和基于健康的自动流量切换。该工作流的目标是：Set up automated failover across regions for high availability.
环境准备
执行本工作流需要以下环境：Infrastructure in at least two regions；A DNS provider with health-check-based routing；A data replication strategy。请确保在开始前准备好所有必需的工具和资源，以避免中途因环境问题中断。
执行步骤
本工作流包含5个步骤。步骤1：Set up replication——Configure database replication between primary and secondary regions. 步骤2：Configure DNS routing——Set up DNS health checks and routing rules to direct traffic to the healthy region. 步骤3：Implement failover logic——Create automation to promote the secondary region when the primary fails. 步骤4：Test failover——Simulate a primary region failure and verify traffic switches to the secondary. 步骤5：Test failback——Restore the primary region and verify traffic returns to normal.
验证与清理
预期结果：Multi-region failover is implemented and tested with automated traffic switching.。验证方法：Simulate a region failure and confirm traffic switches within the target RTO; verify data consistency after failover.。清理操作：Fail back to the primary region after testing; clean up any test artifacts.。estimatedMinutes 为 180 分钟。
代码示例
# Execute the workflow steps as documented above
echo "Workflow completed successfully"