<p class="shortdesc">本文主要介绍如何创建远程灾备实例。</p> <section class="section prereq" id="CSIns__prereq_hf3_bny_gsb"><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 class="section context"><div class="tasklabel"><h2 class="doc-tairway">背景信息</h2></div> <p class="p">为保证业务的高可用性，您可在设置的维护时间内，创建远程灾备实例，当常规实例所在地域发生故障无法连接时，业务可切换到远程灾备实例上，保证业务正常运行。</p> <div class="note important note_important" id="CSIns__note_aqj_w5v_2tb"><span class="note__title">重要：</span> <ol class="ol" id="CSIns__ol_p2z_bny_gsb"> <li class="li">每个地域最多可创建1个远程灾备实例。</li> <li class="li">远程灾备实例的计算规格与存储规格默认与常规实例保持一致。</li> </ol> </div> </section> <section><div class="tasklabel"><h2 class="doc-tairway">操作步骤</h2></div><ol class="ol steps"><li class="li step stepexpand"> <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 stepexpand"> <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 stepexpand"> <span class="ph cmd">选择目标地域。</span> </li><li class="li step stepexpand"> <span class="ph cmd" id="CSIns__OLE_LINK1">单击目标常规实例<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 stepexpand"> <span class="ph cmd">在<span class="ph uicontrol">基本信息</span>区域，单击<span class="ph uicontrol">创建灾备实例</span>，进入<span class="ph uicontrol">创建灾备实例</span>页面。</span> </li><li class="li step stepexpand"> <span class="ph cmd">在<span class="ph uicontrol">主实例基本信息</span>区域，查看并确认常规实例的基本信息。</span> </li><li class="li step stepexpand"> <span class="ph cmd">在<span class="ph uicontrol">地域</span>和<span class="ph uicontrol">可用区</span>两个区域，根据以下信息，创建远程灾备实例。</span> <div class="itemgroup info"> <table class="table" id="CSIns__table_fx4_fny_gsb"><caption></caption><colgroup><col><col></colgroup><thead class="thead"> <tr class="row"> <th class="entry colsep-1 rowsep-1" id="CSIns__table_fx4_fny_gsb__entry__1"> <p class="p">配置项</p> </th> <th class="entry colsep-1 rowsep-1" id="CSIns__table_fx4_fny_gsb__entry__2"> <p class="p">说明</p> </th> </tr> </thead><tbody class="tbody"> <tr class="row"> <td class="entry colsep-1 rowsep-1" headers="CSIns__table_fx4_fny_gsb__entry__1 "> <p class="p"> 地域 </p> </td> <td class="entry colsep-1 rowsep-1" headers="CSIns__table_fx4_fny_gsb__entry__2 "> <p class="p"> 远程灾备实例所在的地域，请选择与常规实例不同的地域。 </p> </td> </tr> <tr class="row"> <td class="entry colsep-1 rowsep-1" headers="CSIns__table_fx4_fny_gsb__entry__1 "> <p class="p"> 可用区 </p> </td> <td class="entry colsep-1 rowsep-1" headers="CSIns__table_fx4_fny_gsb__entry__2 "> <p class="p"> 远程灾备实例所在的可用区。 </p> </td> </tr> </tbody></table> </div> </li><li class="li step stepexpand"> <span class="ph cmd">单击<strong class="ph b">购买</strong>。</span> </li><li class="li step stepexpand"> <span class="ph cmd">在<strong class="ph b">订单确认</strong>页面，确认购买信息，单击<strong class="ph b">确认开通</strong>。</span> </li></ol></section> <section class="section result"><div class="tasklabel"><h2 class="doc-tairway">执行结果</h2></div> <p class="p">在<span class="ph uicontrol">云数据库管理</span>页面，可查看到刚刚创建的RDS-MySQL远程灾备实例，<span class="ph uicontrol">实例类型</span>为<span class="ph uicontrol">灾备实例</span>，<span class="ph uicontrol">状态</span>由<span class="ph uicontrol">创建中</span>显示为<span class="ph uicontrol">运行中</span>。</p> </section>