# SSH 三步解决免密登录
# 1.客户端生成公私钥
本地客户端生成公私钥：（一路回车默认即可）
ssh-keygen
上面这个命令会在用户目录.ssh文件夹下创建公私钥
cd ~/.ssh
ls
下创建两个密钥：
- id_rsa （私钥）
- id_rsa.pub (公钥)
# 2.上传公钥到服务器
上传公钥到服务器
ssh-copy-id -i ~/.ssh/id_rsa.pub root@192.168.1.101 -p 10022
上面这条命令是写到服务器上的ssh目录下去了
cd ~/.ssh
vim authorized_keys
可以看到客户端写入到服务器的 id_rsa.pub （公钥）内容。
# 3.测试免密登录
客户端通过ssh连接远程服务器，就可以免密登录了。
ssh root@192.168.1.101 -p 10022
# 4.上传文件到服务器
使用scp命令
scp -P 10022 -r "./dist" xiaoshaozi@192.168.1.101:/home/xiaoshaozi/workspace
# 常见错误
# 无法上传秘钥
上传报错
miyufeng@MacBook-Pro .ssh % ssh-copy-id -i ~/.ssh/linux_106_rsa_ssh.pub root@106.14.41.60
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/Users/miyufeng/.ssh/linux_106_rsa_ssh.pub"
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
/usr/bin/ssh-copy-id: ERROR: @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
ERROR: @ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @
ERROR: @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
ERROR: IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
ERROR: Someone could be eavesdropping on you right now (man-in-the-middle attack)!
ERROR: It is also possible that a host key has just been changed.
ERROR: The fingerprint for the ECDSA key sent by the remote host is
ERROR: SHA256:kXtnmnqUFcE/btiDu5sFkCInUpwU2dgLTPyuyBtxUsw.
ERROR: Please contact your system administrator.
ERROR: Add correct host key in /Users/miyufeng/.ssh/known_hosts to get rid of this message.
ERROR: Offending ECDSA key in /Users/miyufeng/.ssh/known_hosts:1
ERROR: ECDSA host key for 106.14.41.60 has changed and you have requested strict checking.
ERROR: Host key verification failed.
miyufeng@MacBook-Pro .ssh % ssh-copy-id -i ~/.ssh/linux_106_rsa_ssh.pub root@106.14.41.60 -p 22
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/Users/miyufeng/.ssh/linux_106_rsa_ssh.pub"
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
/usr/bin/ssh-copy-id: ERROR: @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
ERROR: @ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @
ERROR: @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
ERROR: IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
ERROR: Someone could be eavesdropping on you right now (man-in-the-middle attack)!
ERROR: It is also possible that a host key has just been changed.
ERROR: The fingerprint for the ECDSA key sent by the remote host is
ERROR: SHA256:kXtnmnqUFcE/btiDu5sFkCInUpwU2dgLTPyuyBtxUsw.
ERROR: Please contact your system administrator.
ERROR: Add correct host key in /Users/miyufeng/.ssh/known_hosts to get rid of this message.
ERROR: Offending ECDSA key in /Users/miyufeng/.ssh/known_hosts:1
ERROR: ECDSA host key for 106.14.41.60 has changed and you have requested strict checking.
ERROR: Host key verification failed.
解决方法一： 清除本地缓存 (opens new window)证书
执行 ssh-keygen -R IP地址
**解决方法二：**在.ssh/known_hosts中删除对应ip
执行vi .ssh/known_hosts 找到并删除