linux设置ssh免密登录和ssh-copy-id命令

本文链接：https://blog.csdn.net/hochoy/article/details/80749309
linux系统配置免密码的方式：

1：ssh-keygen -t rsa

ssh-keygen -t dsa

生成密钥

2：ssh-copy-id -i ~/.ssh/id_rsa.pub [email protected]

# 接下来一路回车到底

cd /root
ssh-keygen -t rsa
# 接下来一路回车到底
ssh-copy-id -i ~/.ssh/id_dsa.pub [email protected]
ssh-copy-id -i ~/.ssh/id_dsa.pub [email protected]
ssh-copy-id -i ~/.ssh/id_dsa.pub [email protected]
其他机器也是，ssh-copy-id 在每台机器上均需执行

把本机的公钥追到root的 .ssh/authorized_keys 里

3：测试

[plain] view plain copy
[[email protected]]$ ssh tw-master
Last login: Thu Aug  7 16:37:55 2014 from tw-master
[[email protected]~]$

4：如果ssh的端口不是22，可用下面命令
ssh-copy-id -i ~/.ssh/id_rsa.pub "-p 23 [email protected]"

原文地址：https://www.cnblogs.com/linwenbin/p/11612387.html