Multi-virtual Machine trust under Centos 7

Assuming three virtual machines a (10.139.8.82), B (10.139.8.83), C (10.139.8.84), you need to ensure the connectivity of the network between the three virtual machines.

Operation Steps:

First, the configuration on a machine

① log in as root to change the SSH configuration file/etc/ssh/sshd_config

Rsaauthentication Yes #启用rsa认证

Pubkeyauthentication Yes #启用公钥私钥配对认证方式

Authorizedkeysfile. Ssh/authorized_keys #公钥文件路径

[[email protected]/] #systemctl restart sshd//restart SSH service

② generating a public key private key pair

[[email protected]/] #ssh-keygen-t RSA

The system generates ID_RSA, id_rsa.pub under/root/.ssh

③ send the Id_rsa.pub under the A machine to B, C machine

[[email protected]/] #ssh-copy-id-i/root/.ssh/id_rsa.pub 10.139.8.83

[[email protected]/] #ssh-copy-id-i/root/.ssh/id_rsa.pub 10.139.8.84

Second, B, C machine using the same method in step one, remember to change the IP address

Third, realize SSH multi-machine mutual trust

Take a machine as an example

[[email protected]/] #ssh 10.139.8.83//login B Machine

[[email protected]/] #ifconfig//Check if login is successful

[[email protected]/] #exit//exit SSH login, return to this machine

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Multi-virtual Machine trust under Centos 7