ssh 可以實現免登陸,無密碼登錄要使用公鑰與私鑰。linux下可以用用ssh-keygen生成公鑰/私鑰對,下面我以CentOS爲例.
一)準備工作
主機node1,node2,node3
修改主機名(vi /etc/sysconfig/network)
192.168.9.11 node1
192.168.9.22 node2
192.168.9.33 node3
二)查看ssh命令(使用node1生成公鑰)
ssh -version
如果沒有安裝
yum -y install ssh(貌似沒有用)
yum -y install openssh-clinet
yum -y install rsync
就在.ssh下生成id_rsa和id_rsa.pub
四)複製 .ssh下id_rsa.pub到node1, node2, node3
ssh-copy-id -i ~/.ssh/id_rsa.pub [email protected]
ssh-copy-id -i ~/.ssh/id_rsa.pub [email protected]
ssh-copy-id -i ~/.ssh/id_rsa.pub [email protected]
五)驗證
ssh node2
exit
shh node3
exit