配置ssh免密登录

有node01,node02,node03三台机器，我们需要对其进行免密登录

【123】ssh-keygen -t rsa -P ‘’ -f ~/.ssh/id_rsa

【123】vim /etc/ssh/ssh_config 在最后添加

StrictHostKeyChecking no
UserKnownHostsFile /dev/null

【123】vim /etc/hosts

192.168.88.101 node01
192.168.88.102 node02
192.168.88.103 node03
192.168.88.104 node04

【123】ssh-copy-id -i ~/.ssh/id_rsa.pub root@node01
【123】ssh-copy-id -i ~/.ssh/id_rsa.pub root@node02
【123】ssh-copy-id -i ~/.ssh/id_rsa.pub root@node03