<p class="shortdesc">本文介绍如何为实例关联安全组。</p> <section class="section prereq" id="AssocitaInstance__prereq_hl4_h5q_lvb"><div class="tasklabel"><h2 class="doc-tairway">前提条件</h2></div> <div class="p"> <ol class="ol" id="AssocitaInstance__ol_kql_5tq_lvb"> <li class="li">1. 已创建安全组。</li> <li class="li">2. 已在创建安全组时所选择的VPC内创建云主机实例，且该云主机实例创建时未绑定该安全组。</li> </ol> </div> </section> <section id="AssocitaInstance__steps_c1l_35q_lvb"><div class="tasklabel"><h2 class="doc-tairway">操作步骤</h2></div><ol class="ol steps" id="AssocitaInstance__steps_c1l_35q_lvb"><li class="li step stepexpand"> <span class="ph cmd" id="AssocitaInstance__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 stepexpand"> <span class="ph cmd">单击左侧导航栏<span class="ph uicontrol">安全组</span>，进入<span class="ph uicontrol">安全组</span>页面。</span> </li><li class="li step stepexpand"> <span class="ph cmd">单击目标安全组的名称，进入<span class="ph uicontrol">安全组详情</span>页面。</span> </li><li class="li step stepexpand"> <span class="ph cmd">切换到需要添加安全组的实例页签，单击右上角的<span class="ph uicontrol">添加</span>，弹出<span class="ph uicontrol">关联实例</span>对话框。</span> <div class="itemgroup info"><img class="image" id="AssocitaInstance__image_v2y_qvq_lvb" src="https://obs-cn-shanghai.fincloud.pinganyun.com/pacloud/20221011105152-1f5df1e297cb.png" width="800"></div> </li><li class="li step stepexpand"> <span class="ph cmd">勾选需要添加的实例，单击<span class="ph uicontrol">确认</span></span> </li></ol></section>