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!