ssh-keygen -t rsa -P ‘’ -f ~/.ssh/id_rsa 生成ssh密鑰
cat id_rsa.pub>> ~/.ssh/authorized_keys 追加到文件
scp id_rsa.pub node3:/tmp/ 發送到某個主機
ssh-keygen -t rsa -P ‘’ -f ~/.ssh/id_rsa 生成ssh密鑰
cat id_rsa.pub>> ~/.ssh/authorized_keys 追加到文件
scp id_rsa.pub node3:/tmp/ 發送到某個主機