<p class="shortdesc">本文主要介绍如何通过RDS-MySQL管理控制台修改RDS-MySQL的部分参数。</p> <section class="section prereq" id="dc_rds_mysqlcfg_0061__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 class="section context"><div class="tasklabel"><h2 class="doc-tairway">背景信息</h2></div> <p class="p">您可以通过RDS-MySQL管理控制台按需修改MySQL引擎相关的高级参数，进行性能调优。</p> <p class="p">常规实例、灾备实例和只读实例均支持修改参数。</p> <p class="p">某些参数需要手动重启实例后才能生效，具体哪些参数需要手动重启实例，可参考控制台提示。重启实例，可参考<a class="xref" href="/ssr/help/database/MySQL/Guide.IM.Restart.Restart_Common_Instance" target="_blank" rel="external noopener">重启实例</a>。</p> </section> <section class="section attention" id="dc_rds_mysqlcfg_0061__zlk_zvx_2tb"><div class="tasklabel"><h2 class="doc-tairway">注意事项</h2></div> <ol class="ol" id="dc_rds_mysqlcfg_0061__ol_gh2_3q5_n5b"> <li class="li">修改常规实例的参数时，会同时修改同城和远程灾备实例的同一参数，且同城和远程灾备实例的该参数值与常规实例保持一致。</li> <li class="li">只读实例的参数可独立于常规实例进行修改，您可以在RDS管理控制台分别修改同城或远程只读实例的参数值，且同城或远程只读实例的同一参数值可以不同，与常规实例也可以不同。</li> <li class="li">修改需要重启实例的参数后，您需要手动重启常规实例、同城只读实例或远程只读实例。</li> <li class="li">重启实例的过程中，系统会发生秒级闪断。建议您在设置的<strong class="ph b">可维护时段</strong>内修改参数。</li> </ol> </section> <section id="dc_rds_mysqlcfg_0061__steps_g3t_mz2_hsb"><div class="tasklabel"><h2 class="doc-tairway">操作步骤</h2></div><ol class="ol steps" id="dc_rds_mysqlcfg_0061__steps_g3t_mz2_hsb"><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<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">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">参数管理</span>页签。</span> </li><li class="li step stepexpand"> <span class="ph cmd">在目标参数的<span class="ph uicontrol">当前值</span>直接修改参数取值。</span> </li><li class="li step stepexpand"> <span class="ph cmd">单击页面右上角的<span class="ph uicontrol">修改</span>，提交修改结果。</span> <div class="itemgroup info"> <div class="p"> <img class="image" id="dc_rds_mysqlcfg_0061__image_o44_2pt_hsb" src="https://obs-cn-shanghai.fincloud.pinganyun.com/pacloud/20222410144209-1f3ec75d9d69.png" width="800"> </div> </div> </li></ol></section> <section class="section result" id="dc_rds_mysqlcfg_0061__result_vcp_cwx_2tb"><div class="tasklabel"><h2 class="doc-tairway">执行结果</h2></div> <p class="p">页面底部显示<span class="ph uicontrol">操作成功</span>。且修改后的参数<span class="ph uicontrol">当前值</span>置灰，刷新后恢复为可编辑状态。</p> </section>