配置ssh免密登陆：客户端主机通过redhat用户基于秘钥验证方式进行远程连接服务器的root用户

最新推荐文章于 2025-04-22 18:13:09 发布

赵梓鑫

最新推荐文章于 2025-04-22 18:13:09 发布

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文章标签：服务器运维 linux

本文链接：https://blog.youkuaiyun.com/m0_65540912/article/details/129540106

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文章描述了在RHCE（红帽认证工程师）的第二次作业中，如何进行服务器的网络配置，包括IPv4和IPv6地址。然后，创建并传输SSH密钥，以便无密码远程登录到root用户。最后，展示了成功远程连接后的系统信息。

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RHCE第二次作业

服务器root用户：

[root@localhost ~]# ifconfig
ens160: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.130.128  netmask 255.255.255.0  broadcast 192.168.130.255
        inet6 fe80::20c:29ff:fe2c:de8  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:2c:0d:e8  txqueuelen 1000  (Ethernet)
        RX packets 309  bytes 30419 (29.7 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 247  bytes 24604 (24.0 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 17  bytes 2039 (1.9 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 17  bytes 2039 (1.9 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

客户端：

创密钥：

[redhat@localhost root]$ ssh-keygen

密钥：

[redhat@localhost root]$ ll /home/redhat/.ssh
总用量 8
-rw-------. 1 redhat redhat 2622  3月 14 20:55 id_rsa
-rw-r--r--. 1 redhat redhat  582  3月 14 20:55 id_rsa.pub

传密钥给服务器root用户：

[redhat@localhost root]$ ssh-copy-id root@192.168.130.128

远程连接服务器root用户：

[redhat@localhost root]$ ssh 'root@192.168.130.128'
Activate the web console with: systemctl enable --now cockpit.socket

Register this system with Red Hat Insights: insights-client --register
Create an account or view all your systems at https://red.ht/insights-dashboard
Last failed login: Tue Mar 14 20:59:14 CST 2023 from 192.168.130.129 on ssh:notty
There was 1 failed login attempt since the last successful login.
Last login: Tue Mar 14 20:51:16 2023 from 192.168.130.1
[root@localhost ~]#