<p class="shortdesc">本文主要介绍如何从同城容灾实例切换至主实例。</p> <section class="section prereq" id="disaster_primary__prereq_f1d_xbw_2tb"><div class="tasklabel"><h2 class="doc-tairway">前提条件</h2></div> <p class="p">您已成功创建常规实例，可参考<a class="xref" href="/ssr/help/database/MySQL/Guide.IM.CIns.CCom" target="_blank" rel="external noopener">创建常规实例</a>。</p> </section> <section><div class="tasklabel"><h2 class="doc-tairway">操作步骤</h2></div><ol class="ol steps"><li class="li step"> <span class="ph cmd">以资源组管理员身份登录<a class="xref" href="https://www.ocftcloud.com/console/rds/mysql" target="_blank" rel="external noopener">RDS-MySQL管理控制台</a>。</span> </li><li class="li step"> <span class="ph cmd">单击左侧导航栏的<span class="ph uicontrol">RDS-MySQL</span>，进入<span class="ph uicontrol">云数据库管理</span>页面。</span> </li><li class="li step"> <span class="ph cmd">选择目标地域。</span> </li><li class="li step"> <span class="ph cmd">单击目标实例<span class="ph uicontrol">操作</span>列的<span class="ph uicontrol">管理</span>，选择<span class="ph uicontrol">基本信息</span>页签。</span> </li><li class="li step"> <span class="ph cmd">在<span class="ph uicontrol">同城切换</span>区域，单击<span class="ph uicontrol">回切</span>。</span> </li><li class="li step"> <span class="ph cmd">在<span class="ph uicontrol">回切</span>页面，单击<span class="ph uicontrol">确认</span>。</span> </li></ol></section> <section class="section result"><div class="tasklabel"><h2 class="doc-tairway">执行结果</h2></div> <ol class="ol"> <li class="li">在<span class="ph uicontrol">云数据库管理</span>页面，目标实例<span class="ph uicontrol">状态</span>显示为<span class="ph uicontrol">同城灾备回切中</span>。</li> <li class="li">成功切换至主实例后，目标实例<span class="ph uicontrol">状态</span>显示为<span class="ph uicontrol">运行中</span>。</li> </ol> </section>