centos配置免密

vim /etc/hosts

所有机器配置好hosts.

ssh-keygen -t rsa

每台机器都执行一遍,一路Enter即可。

ssh-copy-id -i nodeName

每台机器都执行一遍,输入对应机器的密码.

ssh-copy-id -i node1
ssh-copy-id -i node2
ssh-copy-id -i node3
...