<p class="shortdesc">本文介绍如何使用密钥对关联实例。</p> <section class="section prereq" id="Associate_Instance__prereq_zkf_5hr_svb"><div class="tasklabel"><h2 class="doc-tairway">前提条件</h2></div> <p class="p">您已创建自定义密码登录或者创建后设置密码方式的Linux操作系统ECS实例，可参考Linux快速入门中的<a class="xref" href="https://www.ocftcloud.com/ssr/help/compute/ecs/Quick_Start.Linux_Quick_Start.Create_Instance" target="_blank" rel="external noopener">创建实例</a>。</p> </section> <section class="section limitation" id="Associate_Instance__etm_phr_svb"><div class="tasklabel"><h2 class="doc-tairway">使用限制</h2></div> <ol class="ol" id="Associate_Instance__ol_olh_shr_svb"> <li class="li">使用密钥对关联实例之后，原来密码登录将失效。</li> <li class="li">一台 Linux 实例只能绑定一个 SSH 密钥对。</li> <li class="li">一个ssh密钥对可以关联多个实例。</li> </ol> </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/ecs/overview" target="_blank" rel="external noopener">云服务器ECS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">密钥对</span>，进入<span class="ph uicontrol">密钥对</span>页面。</span> </li><li class="li step stepexpand"> <span class="ph cmd">选择目标地域，在目标密钥对操作列单击<span class="ph uicontrol">关联实例</span>。</span> <div class="itemgroup info"><img class="image" id="Associate_Instance__image_g3q_b3r_svb" src="https://obs-cn-shanghai.fincloud.pinganyun.com/pacloud/20232006152129-1d90bfca959e.png" width="800"></div> </li><li class="li step stepexpand"> <span class="ph cmd">弹出<span class="ph uicontrol">关联实例</span>页面，勾选目标ECS实例，单击<span class="ph uicontrol">确认</span>。</span> </li><li class="li step stepexpand"> <span class="ph cmd">弹出<span class="ph uicontrol">验证码</span>对话框，输入验证码。</span> </li><li class="li step stepexpand"> <span class="ph cmd">单击<span class="ph uicontrol">确定</span>。</span> <div class="itemgroup info"> <div class="note note note_note" id="Associate_Instance__note_iwb_h3r_svb"><span class="note__title">说明：</span> 关联实例后会下载一个.pem格式私钥，请妥善保管。</div> </div> </li></ol></section> <section class="section result" id="Associate_Instance__result_nph_33r_svb"><div class="tasklabel"><h2 class="doc-tairway">执行结果</h2></div> <p class="p">关联完成后，目标密钥对的已关联实例列下方的数字为最新关联实例数量，可以单击数字，进入<span class="ph uicontrol">实例管理</span>页面，查看具体关联的实例信息。</p> </section>