Linux ❉ Redhat 8密钥ssh服务器

两台测试机，分别为

192.168.247.135
192.168.247.128

在192.168.247.128执行如下操作

# 执行命令，，会自动创建对应目录，并生成密钥文件
[root@192 ~]# ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa): 直接回车确认
Created directory '/root/.ssh'.
Enter passphrase (empty for no passphrase): # 有需要输入两次密码，不需要就直接回车
Enter same passphrase again: 
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
# 默认的证书目录：/root/.ssh
# 默认创建的公钥文件：/root/.ssh/id_rsa.pub 
The key fingerprint is:
SHA256:vyzrBLXe3wqRWPMETXjMaExbOjysncNSah0ni1yAEcw root@192.168.247.128
The key's randomart image is:
+---[RSA 3072]----+
|     oo+.ooBo    |
|      E  +===    |
|        ..#.o    |
|       o & &     |
|      . S X .    |
|       + + o     |
|        o +      |
|       ... + .   |
|       .ooo o..  |
+----[SHA256]-----+

# 直接将公钥文件存入对端的对应文件，这个目录需要手动创建
[root@192 ~]# scp /root/.ssh/id_rsa.pub root@192.168.247.135:/root/.ssh/authorized_keys
The authenticity of host '192.168.247.135 (192.168.247.135)' can't be established.
ECDSA key fingerprint is SHA256:ZX5jD2hAw5ddo/oMj/QgfBB+CPr9FG8/aaPnz6epS34.
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added '192.168.247.135' (ECDSA) to the list of known hosts.
root@192.168.247.135's password: # 输入对端密码
id_rsa.pub                                    100%  574   602.6KB/s   00:00    

# 远程操作测试
[root@192 ~]# ssh 192.168.247.135
Activate the web console with: systemctl enable --now cockpit.socket

This system is not registered to Red Hat Insights. See https://cloud.redhat.com/
To register this system, run: insights-client --register

Last login: Wed Dec 15 18:38:19 2021
[root@192 ~]# 
# 成功

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