Permission denied (publickey)

https://help.github.com/articles/error-permission-denied-publickey/




$ ssh-keygen
Generating public/private rsa key pair.
Enter file in which to save the key ( /home/wz/.ssh/id_rsa):
/home/wz/.ssh/id_rsa already exists.
Overwrite (y/n)? y
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/wz/.ssh/id_rsa.
Your public key has been saved in /home/wz/.ssh/id_rsa.pub.
The key fingerprint is:
e9:e3:2a:7b:c4:e1:b2:d3:8c:ce:40:4a:07:fb:42:18 wz@wz-computer
The key's randomart image is:
+--[ RSA 2048]----+
|                 |
|                 |
|E.               |
|..o   .  .       |
|.+.. o .S        |
|ooo . +.         |
|.... B  o        |
|  .o= +. .       |
|   .+=...        |
+-----------------+
$ ll ~/.ssh
total 20
drwx------  2 wz wz 4096  2月  2 13:26 ./
drwxr-xr-x 30 wz wz 4096  2月  2 13:26 ../
-rw-------  1 wz wz 1679  2月  2 13:48 id_rsa
-rw-------  1 wz wz  396  2月  2 13:48 id_rsa.pub
-rw-------  1 wz wz 2210  2月  2 13:44 known_hosts



$ ssh git@github.com
Agent admitted failure to sign using the key.
Permission denied (publickey).
$ ssh-add -l
2048 e9:e3:2a:7b:c4:e1:b2:d3:8c:ce:40:4a:07:fb:42:18 wz@wz-computer (RSA)

$ eval "$(ssh-agent -s)"
Agent pid 9424
$ ssh-add -l
The agent has no identities.
$ ssh-add -l -E md5
The agent has no identities.
$ ssh-add （需要添加一下才能生效）
Identity added: /home/wz/.ssh/id_rsa ( /home/wz/.ssh/id_rsa)
$ ssh-add -l
2048 e9:e3:2a:7b:c4:e1:b2:d3:8c:ce:40:4a:07:fb:42:18 /home/wz/.ssh/id_rsa (RSA)
$ ssh-add -l -E md5
2048 e9:e3:2a:7b:c4:e1:b2:d3:8c:ce:40:4a:07:fb:42:18 /home/wz/.ssh/id_rsa (RSA)