A机（1）路径注意下（/root/.ssh/）

ssh-keygen -t rsa -P ‘‘ -f /root/.ssh/id_rsa

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

scp /root/.ssh/id_rsa.pub skinglzw3@192.168.128.132:/home/skinglzw3/

B机

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

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