<p class="shortdesc">如果您在使用云主机实例的过程中，发生了当前规格不适配业务需求，您可以对云主机实例进行升配或降配操作。</p> <section class="section prereq" id="Change_Configuration__prereq_y4l_jvc_2sb"><div class="tasklabel"><h2 class="doc-tairway">前提条件</h2></div> <ol class="ol" id="Change_Configuration__ol_yfz_dcc_jtb"> <li class="li">云主机实例状态处于已关机，运行中或重启中的云主机实例无法执行升配或降配操作，关机后会中断您的业务，建议您在业务低谷时执行升配或降配操作。</li> <li class="li">若实例升配只能选择高于当前配置的实例规格，若当前实例规格为该产品系列最高配置，将无法支持升配。</li> </ol> </section> <section id="Change_Configuration__steps_ypv_wcc_jtb"><div class="tasklabel"><h2 class="doc-tairway">操作步骤</h2></div><ol class="ol steps" id="Change_Configuration__steps_ypv_wcc_jtb"><li class="li step"> <span class="ph cmd" id="Change_Configuration__d21e22">登录<a class="xref" href="/console/dedicatedEcs/host" target="_blank" rel="external noopener">专属服务器DH控制台</a>。</span> </li><li class="li step"> <span class="ph cmd">单击左侧导航栏<span class="ph uicontrol">专属实例</span>，进入<span class="ph uicontrol">实例管理</span>页面。</span> </li><li class="li step" id="Change_Configuration__step_cfm_k1p_lvb"> <span class="ph cmd">选择需要更改配置操作的目标云主机，在操作列中选择<img class="image" id="Change_Configuration__image_tmv_vcj_2tb" src="https://obs-cn-shanghai.fincloud.pinganyun.com/pacloud/20221011105152-1444fcfa9a52.png">。</span> </li><li class="li step"> <span class="ph cmd">弹出下拉菜单中选择<span class="ph uicontrol">更新配置</span>。</span> </li><li class="li step"> <span class="ph cmd">弹出<span class="ph uicontrol">更新配置</span>页面，选择您需要的配置，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> <p class="p"><span class="ph uicontrol">云主机</span>页面刚刚执行更新配置操作的云主机状态显示为<span class="ph uicontrol">更新配置中</span>，更新完成后，目标云主机状态为<span class="ph uicontrol">已关机</span>。</p> </section>