创建ssh的公钥和私钥

# 如果不要密码，直接一直回车
ssh-keygen

将key.pub公钥导入linux服务器

[root@localhost ~]# cd /root/.ssh/
[root@localhost .ssh]# rz
rz waiting to receive.
[root@localhost .ssh]# cat me.pub >> authorized_keys
[root@localhost .ssh]# chmod 600 authorized_keys
[root@localhost .ssh]# ls
authorized_keys known_hosts me.pub
[root@localhost .ssh]# cat authorized_keys
ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEA4VCOWFrARc1m3MfEAL50v2Z2siavO3Ijpr

配置xshell客户端

选择public key,用户名是root,选择私钥