CentOS下SSH无密码登录的配置文件
<p><span><strong>1、确认本机sshd的配置文件（需要root权限）</strong></span></p>
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<code class="bash plain">$ gedit </code><code class="bash plain">/etc/ssh/sshd_config</code>
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找到以下内容，并去掉注释符”#“</p>
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<code class="bash plain">RSAAuthentication </code><code class="bash functions">yes</code>
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<code class="bash plain"> PubkeyAuthentication </code><code class="bash functions">yes</code>
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<code class="bash plain"> AuthorizedKeysFile .</code><code class="bash functions">ssh</code><code class="bash plain">/authorized_keys</code>
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<span><strong>2、如果修改了配置文件需要重启sshd服务 （需要root权限）</strong></span></p>
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<code class="bash plain">$ </code><code class="bash plain">/sbin/service</code> <code class="bash plain">sshd restart</code>
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<span><strong>配置SSH无密码登录需要3步：</strong></span></p>
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<span>1.生成公钥和私钥</span></p>
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<span>2.导入公钥到认证文件,更改权限</span></p>
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<span>3.测试</span></p>
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<strong>1.生成公钥和私钥</strong></p>
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Shell代码: ssh-keygen -t rsa</p>
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默认在 ~/.ssh目录生成两个文件：</p>
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id_rsa ：私钥<br>
id_rsa.pub ：公钥</p>
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<strong>2.导入公钥到认证文件,更改权限</strong></p>
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2.1 导入本机</p>
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Shell代码: cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys</p>
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2.2 导入要免密码登录的服务器</p>
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首先将公钥复制到服务器</p>
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Shell代码: scp ~/.ssh/id_rsa.pub xxx@host:/home/id_rsa.pub</p>
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然后，将公钥导入到认证文件(这一步的操作在服务器上进行)</p>
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Shell代码: cat /home/id_rsa.pub >> ~/.ssh/authorized_keys</p>
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2.3 在服务器上更改权限</p>
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Shell代码: chmod 700 ~/.ssh</p>
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chmod 600 ~/.ssh/authorized_keys</p>
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<strong>3.测试 ssh xxx</strong></p>
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以上所述是小编给大家介绍的CentOS下SSH无密码登录的配置，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对服务器之家网站的支持！</p>
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