介紹一個小技巧，如何實現ssh免密登陸

概述

首先，說實在的，這個已經被不少人說過了，可是，我是第一次用，沒錯，我就是這麼out

操做

首先生成一個rsa祕鑰 ssh-keygen -t rsa 以後把這個祕鑰拷貝到遠程主機上，用下面這個命令就夠了 ssh-copy-id root@vultr.bboysoul.com

➜  ~ ssh-copy-id root@vultr.bboysoul.com
/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: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys
root@vultr.bboysoul.com's password: 

Number of key(s) added: 1

Now try logging into the machine, with:   "ssh 'root@vultr.bboysoul.com'"
and check to make sure that only the key(s) you wanted were added.

以後你就能夠免密登陸了

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