ssh免密登录

Oct 19, 2017

一、在客户端机器生成密钥（密钥放在.ssh目录）

cd ~/.ssh
ssh-keygen -t rsa -b 2048 -f keyfile

二、登录目标服务器，修改sshd_config文件，确保下面两行没有注释:

PubkeyAuthentication yes
AuthorizedKeysFile .ssh/authorized_keys

三、在目标机器上重启sshd服务:

sudo systemctl restart sshd.service

四、将公钥复制到目标机器.ssh目录下命名为authorized_keys

scp ~/.ssh/keyfile.pub john@192.168.0.161:~/.ssh/authorized_keys

五、登录目标机器，确保.ssh目录与authorized_keys文件的权限

cd
chmod 700 .ssh
cd ~/.ssh
chmod 600 authorized_keys

六、在客户端机器.ssh目录中创建config文件，内容如下：

Host 192.168.0.161
HostName 192.168.0.161
IdentityFile ~/.ssh/keyfile

七、确保config文件的权限

cd ~/.ssh
chmod 600 config

Hope is a good thing, and maybe the best thing of all