Linux-144:~ # ssh-keygen
Generating public/private rsa key pair.
Enter fileinwhich to save the key (/root/.ssh/id_rsa):
Created directory '/root/.ssh'.
Enter passphrase (empty for no passphrase):
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.
The key fingerprint is:
SHA256:nUn0/piKV9GejHr7uo4Hj+xMCWlMQK/4NNhnOoUQHV0 root@Linux-144
The key's randomart image is:
+---[RSA 2048]----+
| .o+o .E ||..o...||. o ...||== + +. .|| o * S + .=.|| o B ...o++ || + .o*o .||. +=o+ || .o=+==. |
+----[SHA256]-----+
Linux-144:~ # ll ~/.ssh/
total 8
-rw------- 1 root root 1675 Jan 19 06:39 id_rsa
-rw-r--r-- 1 root root 396 Jan 19 06:39 id_rsa.pub
2.3、我要单向畅通无阻的进入你的心（ssh-copy-id发送公钥和秘钥）
使用 ssh-copy-id 可以将自己的公钥和私钥发送到其他远程的服务
Linux-144:~ # ssh-copy-id -i [email protected]
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub"
The authenticity of host '192.168.72.145 (192.168.72.145)' can't be established.
ECDSA key fingerprint is SHA256:r+MDt63O2buie+vek5ysFZ5wbxd+QolySolYxn6JMCU.
Are you sure you want to continue connecting (yes/no)? yes "首次登陆的时候，需要输入yes"
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys
Password: "这里的密码，是192.168.72.145机器得密码"
Number of key(s) added: 1
Now try logging into the machine, with: "ssh '[email protected]'"
and check to make sure that only the key(s) you wanted were added.
Linux-145:~ # ssh [email protected] "但是145想要进入到144的心，就需要验证密码，单向奔赴，总是让人心疼"
The authenticity of host '192.168.72.144 (192.168.72.144)' can't be established.
ECDSA key fingerprint is SHA256:r+MDt63O2buie+vek5ysFZ5wbxd+QolySolYxn6JMCU.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '192.168.72.144' (ECDSA) to the list of known hosts.
Password:
Last login: Tue Jan 19 06:36:12 2021 from 192.168.72.1
Linux-144:~ # ssh-copy-id -i [email protected]
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub"
The authenticity of host '192.168.72.144 (192.168.72.144)' can't be established.
ECDSA key fingerprint is SHA256:r+MDt63O2buie+vek5ysFZ5wbxd+QolySolYxn6JMCU.
Are you sure you want to continue connecting (yes/no)? yes
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys
Password:
Number of key(s) added: 1
Now try logging into the machine, with: "ssh '[email protected]'"
and check to make sure that only the key(s) you wanted were added.
Linux-144:~ # ll ~/.ssh/
total 16
-rw------- 1 root root 396 Jan 19 06:58 authorized_keys
-rw------- 1 root root 1675 Jan 19 06:39 id_rsa
-rw-r--r-- 1 root root 396 Jan 19 06:39 id_rsa.pub
-rw-r--r-- 1 root root 352 Jan 19 06:58 known_hosts
Linux-145:~ # ssh-keygen
Generating public/private rsa key pair.
Enter fileinwhich to save the key (/root/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
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.
The key fingerprint is:
SHA256:YRqMQywB7FBPve9XxBvCwG9mKkLuw/bBgc15HN4JjNs root@Linux-145
The key's randomart image is:
+---[RSA 2048]----+
|ooooo. . |
|...+.o.oo |
|o .+ +.*+ . |
| . .=.X =B.+ |
| o. B.E=oo o |
| o..oo o |
| o .oo . |
| = .. . |
| . o. . |
+----[SHA256]-----+
Linux-145:~ # ssh-copy-id -i [email protected]
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub"
The authenticity of host '192.168.72.145 (192.168.72.145)' can't be established.
ECDSA key fingerprint is SHA256:r+MDt63O2buie+vek5ysFZ5wbxd+QolySolYxn6JMCU.
Are you sure you want to continue connecting (yes/no)? yes
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys
Password:
Number of key(s) added: 1
Now try logging into the machine, with: "ssh '[email protected]'"
and check to make sure that only the key(s) you wanted were added.
Linux-145:~ # ll ~/.ssh
total 16
-rw------- 1 root root 792 Jan 19 07:03 authorized_keys
-rw------- 1 root root 1679 Jan 19 07:02 id_rsa
-rw-r--r-- 1 root root 396 Jan 19 07:02 id_rsa.pub
-rw-r--r-- 1 root root 352 Jan 19 07:02 known_hosts
Linux-145:~ # ssh [email protected]
Last login: Tue Jan 19 07:06:44 2021 from 192.168.72.145
Linux-144:~ # ssh [email protected]
Last login: Tue Jan 19 06:55:00 2021 from 192.168.72.144
Linux-145:~ # ssh [email protected]
Last login: Tue Jan 19 07:10:20 2021 from 192.168.72.145
Linux-144:~ # ssh [email protected]
Last login: Tue Jan 19 07:10:30 2021 from 192.168.72.144
Linux-145:~ # ssh [email protected]
Last login: Tue Jan 19 07:10:42 2021 from 192.168.72.145
Linux-144:~ # ssh [email protected]
Last login: Tue Jan 19 07:10:46 2021 from 192.168.72.144