Linux Ubuntu 16.04 ssh免密配置步骤札记

-->环境准备

1:IP 192.168.0.123  hostname:2tong-master  OS:Ubuntu 16.04

2:IP 192.168.0.55    hostname:2tong-slaveone OS:Ubuntu 16.04

3:IP 192.168.0.112  hostname:2tong-slavetwo OS:Ubuntu 16.04

-->生成rsa公钥

分别在三台机子上执行如下命令语句：

1：$sudo vi /etc/hosts

add 

     192.168.0.123 2tong-master

     192.168.0.55  2tong-slaveone

     192.168.0.112 2tong-slavetwo

2：$ ssh-keygen -t rsa

->进行相关配置

登录IP 192.168.0.55：

1：$cd ~/.ssh

2：$scp  /home/andytext/.ssh/id_rsa.pub  andytext@192.168.0.123:~/.ssh/rsa_slaveone

      键入密码即可

登录 IP 192.168.0.112：

1：$cd ~/.ssh

2：$scp  /home/andytext/.ssh/id_rsa.pub  andytext@192.168.0.123:~/.ssh/rsa_slavetwo

      键入密码即可

登录IP 192.168.0.123：

1：$cd ~/.ssh

2：$more rsa_slaveone

3：$more rsa_slavetwo

4：$cat id_rsa.pub >> authorized_keys

5：$chmod 600 authorized_keys

6：$cat rsa_slaveone >> authorized_keys

7：$scp /home/text/.ssh/authorized_keys andytext@192.168.0.55:~/.ssh/au_key

8：$scp /home/text/.ssh/authorized_keys andytext@192.168.0.112:~/.ssh/au_key

-->进行测试

任何一台机子上输入$ssh andytext@192.168.0.123 应该是可以通过不输入密码来访问的