linux scp ssh命令不用输入密码

把你的本地主机用户的ssh公匙文件复制到远程主机用户的~/.ssh/authorized_keys文件中
假设本地主机linux100,远程主机linux200

一，在linux100主机里的用户

运行

#ssh-keygen -t rsa

结果如下

QUOTE:

Generating public/private rsa key pair.

Enter file in which to save the key (/home/.username/ssh/id_rsa):#回车

Enter passphrase (empty for no passphrase):#回车

Enter same passphrase again:#回车

Your identification has been saved in /home/.username /.ssh/id_rsa.

Your public key has been saved in /home/.username /.ssh/id_rsa.pub.

The key fingerprint is:

38:25:c1:4d:5d:d3:89:bb:46:67:bf:52:af:c3:17:0c username@localhost

Generating RSA keys:

Key generation complete.

会在用户目录~/.ssh/产生两个文件，id_rsa，id_rsa.pub

二，把linux100主机上的id_rsa.pub文件拷贝到linux200主机的root用户主目录下的.ssh目录下,并且改名为authorized_keys

即：

/root/.ssh/authorized_keys

这样在linux100主机上使用scp命令复制文件到linux200上将不提示输入密码了，直接复制了。

反之亦然！

 

 

从实验的过程中发现：

双方只能在root权限下使用

 

如果配置完成之后，发现还是不好使，需要检查/etc/ssh目录下的sshd_config文件下的

RSAAuthentication yes

PubkeyAuthentication yes

AuthorizedKeysFile      .ssh/authorized_keys

 

3行是否打开，如果为注释掉的，则需要打开。