ssh localhost 免密

ssh-keygen -t dsa -P '' -f ~/.ssh/id_dsa

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

 

要保证(权限很重要！！！)：

 ~/.ssh需要是700权限
authorized_keys需要是644权限

chmod 700 ~/.ssh

chmod 644 ~/.ssh/authorized_keys