谷歌云设置SSH访问

首先我们要登录GCP的后台，然后选择相应的虚拟机实例。

二、设置root密码

1.先选择从浏览器打开ssh连接服务器

2.切换到root账号，输入如下命令

<span class="pln">sudo </span><span class="pun">-</span><span class="pln">i</span>
3.设置root密码
<span class="pln">passwd</span>
然后会要求输入新密码，然后再重复一次密码
输入密码的时候不会显示出来，所以直接输入密码，然后回车，再然后重复输入密码回车

三、开启SSH权限
①方法一
1.修改SSH配置文件/etc/ssh/sshd_config
<span class="pln">vi </span><span class="pun">/</span><span class="pln">etc</span><span class="pun">/</span><span class="pln">ssh</span><span class="pun">/</span><span class="pln">sshd_config</span>
2.然后再输”i”进入编辑模式
<span class="pln">i</span>
3.找到以下内容并修改
<span class="typ">PermitRootLogin</span><span class="pln"> yes           </span><span class="com">//默认为no，需要开启root用户访问改为yes</span>
<span class="typ">PasswordAuthentication</span><span class="pln"> yes    </span><span class="com">//默认为no，改为yes开启密码登陆</span>

4.修改完成后，再下按 esc 键，然后再输入
<span class="pun">:</span><span class="pln">wq</span>

5.重启服务器
<span class="pln">reboot</span>
②方法二
CentOS和Debian通用，输入以下两条命令，分别回车
<span class="pln">sed </span><span class="pun">-</span><span class="pln">i </span><span class="str">'s/PermitRootLogin no/PermitRootLogin yes/g'</span> <span class="pun">/</span><span class="pln">etc</span><span class="pun">/</span><span class="pln">ssh</span><span class="pun">/</span><span class="pln">sshd_config</span>
<span class="pln">sed </span><span class="pun">-</span><span class="pln">i </span><span class="str">'s/PasswordAuthentication no/PasswordAuthentication yes/g'</span> <span class="pun">/</span><span class="pln">etc</span><span class="pun">/</span><span class="pln">ssh</span><span class="pun">/</span><span class="pln">sshd_config</span>
Ubuntu系统，输入以下两条命令，分别回车
<span class="pln">sed </span><span class="pun">-</span><span class="pln">i </span><span class="str">'s/#PermitRootLogin prohibit-password/PermitRootLogin yes/g'</span> <span class="pun">/</span><span class="pln">etc</span><span class="pun">/</span><span class="pln">ssh</span><span class="pun">/</span><span class="pln">sshd_config</span>
<span class="pln">sed </span><span class="pun">-</span><span class="pln">i </span><span class="str">'s/PasswordAuthentication no/PasswordAuthentication yes/g'</span> <span class="pun">/</span><span class="pln">etc</span><span class="pun">/</span><span class="pln">ssh</span><span class="pun">/</span><span class="pln">sshd_config</span>
重启谷歌云GCP服务器
<span class="pln">reboot</span>
接下来我们就可以用SSH工具登录了。一般默认的地址是分配的IP地址，然后端口号是22，登录后，用户名自然就是root，然后密码是前面设置好的。