SSH 免密登录

ssh-keygen -t rsa -P ""

scp -P 9832 /root/.ssh/id_rsa.pub renguoqiang@xxx.xxx.xxx.xxx:/tmp
scp -P 9832 /root/.ssh/id_rsa.pub renguoqiang@xxx.xxx.xxx.xxx:/tmp

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

sudo /bin/cp /tmp/id_rsa.pub /root

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

 结果：未生效！

参考：

scp免密码拷贝和ssh免密码登录 - liuyihua1992 - 博客园
https://www.cnblogs.com/liuyihua1992/p/9602324.html

Linux SSH免密码登录与拷贝文件（SCP） - 技术改变生活 - CSDN博客
https://blog.csdn.net/xyang81/article/details/51477925