配置SSH互信

两个节点分别为node01与node02。

node01：

ssh-keygen -t rsa
ssh-keygen -t dsa

node02：

ssh-keygen -t rsa
ssh-keygen -t dsa

node01：

cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys

ssh node02 cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys (在node02 cat显示出来的内容被重定向到node01的文件中)
  ssh node02 cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys

scp  ~/.ssh/authorized_keys node02:/root/.ssh/authorized_keys

配置结束。

ps. 在/etc/hosts文件中修改hostname对应ip