region1.zone1</code></a><li role=none aria-label="故障转移到 region1.zone2"><a href=#failover-to-region1zone2>故障转移到 <code>region1.zone2</code></a><li role=none aria-label="故障转移到 region2.zone3"><a href=#failover-to-region2zone3>故障转移到 <code>region2.zone3</code></a><li role=none aria-label="故障转移到 region3.zone4"><a href=#failover-to-region3zone4>故障转移到 <code>region3.zone4</code></a><li role=none aria-label=下一步><a href=#next-steps>下一步</a><li role=