实现SSH/SCP不用输入帐号密码

生成key文件

ssh-keygen -t rsa

按提示先yes然后回车回车 就会生成/root/.ssh/id_rsa和/root/.ssh/id_rsa.pub文件

用scp把id_rsa.pub文件拷贝到另外一台需要访问的服务器

scp /root/.ssh/id_rsa.pub 192.168.1.2:~/.ssh/

ssh 192.168.1.2

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

cat .ssh/id_rsa.pub >> .ssh/authorized_keys2

chmod -R 700 ~/.ssh/*

这样配置完scp或者ssh就可以不用输入用户名和密码了