<p class="shortdesc">当一个服务定制了多种策略时，灰度核心框架会按照灰度策略的优先级依次判断使用哪种策略，当优先级最高的策略不适用于本服务时，则采用优先级次高的策略，直至到缺省策略。本章节主要介绍如何调节策略优先级。</p> <section class="section prereq" id="Policy_level__prereq_an1_sbl_dsb"><div class="tasklabel"><h2 class="doc-tairway">前提条件</h2></div> <ul class="ul"> <li class="li">服务已配置缺省策略。</li> <li class="li">服务下存在多个策略。</li> </ul> </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"><span class="ph" id="Policy_level__d21e23">登录应用管理与运维平台。</span></span> </li><li class="li step stepexpand"> <span class="ph cmd">在左侧导航栏中，选择<span class="ph menucascade"><span class="ph uicontrol">服务治理</span><abbr> > </abbr><span class="ph uicontrol">服务治理策略</span></span>。</span> </li><li class="li step stepexpand"> <span class="ph cmd">在<span class="ph uicontrol">治理策略</span>区域，选择<span class="keyword wintitle">版本路由</span>页签。</span> </li><li class="li step stepexpand"> <span class="ph cmd">在<span class="ph uicontrol">策略列表</span>单击优先级后的<img class="image" id="Policy_level__image_h24_xcl_dsb" src="https://obs-cn-shanghai.fincloud.pinganyun.com/pacloud/20220910180811-14e0b70e97a8.png">。</span> </li><li class="li step stepexpand"> <span class="ph cmd">在弹出的<span class="keyword wintitle">编辑优先级</span>页面，拖拽调整策略条目上下顺序，优先级自上往下递减。</span> <div class="itemgroup info"><img class="image" id="Policy_level__image_vny_hdl_dsb" src="https://obs-cn-shanghai.fincloud.pinganyun.com/pacloud/20220910180811-177becf09a22.png"></div> </li><li class="li step stepexpand"> <span class="ph cmd">完成后，单击<span class="ph uicontrol">确定</span>。</span> </li></ol></section>