生成密钥对

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ssh-keygen -t rsa
# 指定加密算法为rsa

# 生成
id_rsa  id_rsa.pub

使用公钥通信

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# 方案一
# 复制公钥id_rsa.pub到目标主机
scp id_rsa.pub jilan@172.16.33.106:/home/jilan/
# 追加公钥到.ssh/authorized_keys
cat id_rsa.pub >> .ssh/authorized_keys

# 方案二
ssh-copy-id jilan@172.16.33.106