配置SSH的对等性出错

# su – oracle　
　　# mkdir ~/.ssh
　　# chmod 755 ~/.ssh
　　# /usr/bin/ssh-keygen -t rsa
　　# /usr/bin/ssh-keygen -t dsa
　　# touch ~/.ssh/authorized_keys

　　$ ssh db01 cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
　　$ ssh db01 cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys
　　$ ssh db02 cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
　　$ ssh db02 cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys
　　节点2：
bash-3.2$ ssh db02 cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
oracle@db02's password:
WARNING: Your password has expired.
Password change required but no TTY available.

节点一上面测试成功收起