<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="Create_Slave_Instance_RASESQL__prereq_epk_zcf_hsb"><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/RASESQL/User_Guide_for_RDS_PostgreSQL.Instance_Management.Create_Instance.Create_Common_Instance_MySQL" 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">为保证业务的高可靠性，您可在设置的可维护时段内，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="Create_Slave_Instance_RASESQL__note_qrj_zfm_ftb"><span class="note__title">重要：</span> <ol class="ol" id="Create_Slave_Instance_RASESQL__ol_vx5_5p2_m5b"> <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"> 登录<a class="xref" href="https://www.ocftcloud.com/console/rds/instance" target="_blank" rel="external noopener">关系型数据库RASESQL管理控制台</a>。</span> </li><li class="li step stepexpand"> <span class="ph cmd">单击左侧导航栏<strong class="ph b">RDS-RASESQL</strong>，进入<strong class="ph b">云数据库管理</strong>页面。</span> </li><li class="li step stepexpand"> <span class="ph cmd">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>右侧区域，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="Create_Slave_Instance_RASESQL__table_ltp_kq2_m5b"><caption></caption><colgroup><col><col></colgroup><thead class="thead"> <tr class="row"> <th class="entry" id="Create_Slave_Instance_RASESQL__table_ltp_kq2_m5b__entry__1"> <p class="p">配置项</p> </th> <th class="entry" id="Create_Slave_Instance_RASESQL__table_ltp_kq2_m5b__entry__2"> <p class="p">说明</p> </th> </tr> </thead><tbody class="tbody"> <tr class="row"> <td class="entry" headers="Create_Slave_Instance_RASESQL__table_ltp_kq2_m5b__entry__1 "> <p class="p">地域</p> </td> <td class="entry" headers="Create_Slave_Instance_RASESQL__table_ltp_kq2_m5b__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" headers="Create_Slave_Instance_RASESQL__table_ltp_kq2_m5b__entry__1 "> <p class="p">可用区</p> </td> <td class="entry" headers="Create_Slave_Instance_RASESQL__table_ltp_kq2_m5b__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<span class="ph uicontrol">确认订单</span>，进入<span class="ph uicontrol">订单支付</span>页面。</span> </li><li class="li step stepexpand"> <span class="ph cmd">确认<span class="ph uicontrol">订单信息</span>以及<span class="ph uicontrol">资源组可用余额</span>。</span> </li><li class="li step stepexpand"> <span class="ph cmd">单击<span class="ph menucascade"><span class="ph uicontrol">开始计费</span><abbr> > </abbr><span class="ph uicontrol">确认购买</span></span>。</span> </li></ol></section> <section class="section result" id="Create_Slave_Instance_RASESQL__result_oh3_qq2_m5b"><div class="tasklabel"><h2 class="doc-tairway">执行结果</h2></div> <p class="p">创建完成后，在<span class="ph uicontrol">云数据库管理</span>页面，可查看到刚刚创建的RASESQL远程灾备实例，且<span class="ph uicontrol">状态</span>显示<span class="ph uicontrol">运行中</span>。</p> </section>