一、四台主机进行免密
192.168.10.6
192.168.10.11
192.168.10.12
192.168.10.13
二、192.168.10.6主机生成密钥对，并将公钥传输到其它所有主机。
root@k8s-master01:~# ssh-keygen -t rsa -P ''
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa):
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:BkqF1ysQP9COkjGM3LEDoYP+akQaK8Zuef7VcmTnOR0 root@k8s-master01
The key's randomart image is:
+---[RSA 3072]----+
|.=o.++.. |
|+.=.++o . |
|+ *.=+ . |
|ooo.o.oo. |
|++ .. .So . E |
|++. .+ o o . |
|= .. o o + . |
| =.. . o . |
|o.o... |
+----[SHA256]-----+
root@k8s-master01:~# ssh-copy-id -i .ssh/id_rsa.pub [email protected]
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: ".ssh/id_rsa.pub"
The authenticity of host '192.168.10.6 (192.168.10.6)' can't be established.
ED25519 key fingerprint is SHA256:rP2GqlXjoG0UGi/kNixh1qXFg1dd1zJHIz2LutbTn80.
This key is not known by any other names
Are you sure you want to continue connecting (yes/no/[fingerprint])? 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
[email protected]'s 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.
root@k8s-master01:~# ssh-copy-id -i .ssh/id_rsa.pub [email protected]
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: ".ssh/id_rsa.pub"
The authenticity of host '192.168.10.11 (192.168.10.11)' can't be established.
ED25519 key fingerprint is SHA256:sm5LyiMTU6zs8worQAgtjgx+rQPR/nXQIoBB+ETGPGU.
This key is not known by any other names
Are you sure you want to continue connecting (yes/no/[fingerprint])? 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
[email protected]'s 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.
root@k8s-master01:~# ssh-copy-id -i .ssh/id_rsa.pub [email protected]
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: ".ssh/id_rsa.pub"
The authenticity of host '192.168.10.13 (192.168.10.13)' can't be established.
ED25519 key fingerprint is SHA256:qibMIGG51Rj4vpV+yEsw0swurRYhrYWWZOWIBPQmC3g.
This key is not known by any other names
Are you sure you want to continue connecting (yes/no/[fingerprint])? 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
[email protected]'s 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.