CentOS配置无密码登录的实现

#禁止root登录
PermitRootLogin no

#指定可以登录的用户
AllowUsers bob alice
StrictModes yes

#关闭密码验证
PasswordAuthentication no

#打开RSA验证相关设置
RSAAuthentication yes
PubkeyAuthentication yes

AuthorizedKeysFile   .ssh/authorized_keys

#关闭 GSSAPI验证
GSSAPIAuthentication no

#生成key-pair
ssh-keygen 
cp ~/.ssh/id_rsa.pub ~/.ssh/authorized_keys
sudo chmod 600 ~/.ssh/authorized_keys
sudo chmod 700 ~/.ssh
restorecon -R -v ~/.ssh

ssh -i server.pem username@server