ansible key验证配置

ansible的控制端与被控制主机直接若想建立连接，默认验证方式是基于key验证的，下面就是在ansible控制端创建并copy到被控制主机的详细步骤：

[root@controller ~]# ssh-key
ssh-keygen   ssh-keyscan
[root@controller ~]# ssh-keygen
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa):
/root/.ssh/id_rsa already exists.
Overwrite (y/n)? y
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:
SHA256:3cz6KF4I2Hy2VtIVjCKrdeT6+vtvc1AKJNxdMPBQlt8 root@controller
The key's randomart image is:
+---[RSA 2048]----+
|       . .o**+.  |
|      . = +++o   |
|       = +  o. . |
|     +o oo.=  o E|
|    .o+oS +.+o   |
|    . .+ = .o    |
|       .+ o  .   |
|       .o. oo .  |
|      .+++oooo   |
+----[SHA256]-----+
[root@controller ~]# ssh-copy-id 192.168.137.130
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be ×××talled: "/root/.ssh/id_rsa.pub"
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already ×××talled
/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be ×××talled -- if you are prompted now it is to ×××tall the new keys
[email protected]'s password:

Number of key(s) added: 1

Now try logging into the machine, with:   "ssh '192.168.137.130'"
and check to make sure that only the key(s) you wanted were added.

[root@controller ~]# ssh-copy-id 192.168.137.131
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be ×××talled: "/root/.ssh/id_rsa.pub"
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already ×××talled
/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be ×××talled -- if you are prompted now it is to ×××tall the new keys
[email protected]'s password:

Number of key(s) added: 1

Now try logging into the machine, with:   "ssh '192.168.137.131'"
and check to make sure that only the key(s) you wanted were added.

[root@controller ~]# ssh-copy-id 192.168.137.132
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be ×××talled: "/root/.ssh/id_rsa.pub"
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already ×××talled
/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be ×××talled -- if you are prompted now it is to ×××tall the new keys
[email protected]'s password:

Number of key(s) added: 1

Now try logging into the machine, with:   "ssh '192.168.137.132'"
and check to make sure that only the key(s) you wanted were added.

[root@controller ~]# ansible all -m ping
192.168.137.131 | SUCCESS => {
    "changed": false,
    "ping": "pong"
}
192.168.137.132 | SUCCESS => {
    "changed": false,
    "ping": "pong"
}
192.168.137.130 | SUCCESS => {
    "changed": false,
    "ping": "pong"
}
[root@controller ~]#