mac无密登陆到linux

最近弄了台linux云服务器，然而每次登陆linux都好麻烦，所以倒腾了下ssh无密登陆。

linux：centos 6.5，自带ssh

mac：yosemite，自带ssh

步骤：

1. 创建key

➜  .ssh ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/Users/yinkw/.ssh/id_rsa):        <--直接回车
Enter passphrase (empty for no passphrase):                            <--直接回车
Enter same passphrase again:
Your identification has been saved in /Users/yinkw/.ssh/id_rsa.
Your public key has been saved in /Users/yinkw/.ssh/id_rsa.pub.
The key fingerprint is:
:::中间这一段藏起来:d1 yinkw@yinkw.local
The key's randomart image is:
+--[ RSA ]----+
|    ooooo=o+     |
|   ...+o= + E    |
|     . *.+ .     |
|      . =.+      |
|        S=..     |
|         .o      |
|                 |
|                 |
|                 |
+-----------------+
➜  .ssh ll
total
-rw-------   yinkw  staff   .6K    : id_rsa           <--私钥
-rw-r--r--   yinkw  staff   399B    : id_rsa.pub       <--公钥

2. 拷贝公钥到linux

➜  .ssh scp id_rsa.pub root@19.29.～～:~/.ssh
root@119.29.～～'s password:
id_rsa.pub                                                                                   %       .4KB/s   :

3. linux，公钥内容追加到authorized_keys

[root@centos]~/.ssh# ll
总用量
-rw-r--r--  root root    9月   : authorized_keys
-rw-r--r--  root root  10月   : id_rsa.pub
[root@centos]~/.ssh# cat id_rsa.pub >> authorized_keys

4. mac测试

➜  ~ ssh root@119.29.～～
Last  ::  from 101.106.～～

诶诶，这是怎么回事，没用重启sshd服务，却已经可以使用rsakey登陆了

5. linux关闭passwd登陆

/etc/ssh/sshd_config：

PasswordAthentication no

关掉passwd登陆后自我感觉安全多了

--done--