问题描述
我在Amazon EC2上创建了一个Ubuntu 12.04实例。
我已经下载了PEM文件，并且能够SSH进入实例，没问题。
现在，我想在远程实例上为顾问等创建一些帐户。他们应该能够使用RSA密钥进入框中。在EC2机器上，我在〜/home /中设置了几个帐户，并将它们分配给组管理员。我也给自己一个类似的帐户(MyTestAccount)进行测试。这就是我做的：
我使用key-gen在我的本地机器上的.ssh目录中创建公钥和私钥(〜/.ssh)：
drwx------ 2 peter peter 1024 Sep 14 10:23 .ssh
里面的文件：
-rw------- 1 peter peter 1675 Sep 14 10:23 id_rsa
-rw------- 1 peter peter 394 Sep 14 10:23 id_rsa.pub
-rw------- 1 peter peter 444 Sep 14 00:05 known_hosts
然后，我将id_rsa.pub文件发送到远程EC2实例，并将其附加到远程实例中的.ssh /authorized_keys文件中。我的远程.ssh目录的权限：
drwx------ 2 ubuntu ubuntu 4096 Sep 16 16:13 .ssh
和我的authorized_keys文件：
-rw------- 1 peter ubuntu 1179 Sep 14 00:05 authorized_keys
接下来，我注销了我的远程实例，并尝试使用新密钥SSH到远程控制台。当我发出以下命令时：
peter@ubuntu:~/.ssh$ ssh -vvv MyTestAccount@ec2-XX-XXX-XX-XXX.compute-1.amazonaws.com
我得到以下内容。看起来我的私钥有问题吗？有什么建议？谢谢。
OpenSSH_5.9p1 Debian-5ubuntu1, OpenSSL 1.0.1 14 Mar 2012
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug2: ssh_connect: need priv 0
debug1: Connecting to ec2-XX-XXX-XX-XXX.compute-1.amazonaws.com [XX.XXX.XX.XXX] port 22.
debug1: Connection established.
debug3: Incorrect RSA1 identifier
debug3: Could not load "/home/peter/.ssh/id_rsa" as a RSA1 public key
debug1: identity file /home/peter/.ssh/id_rsa type 1
debug1: Checking blacklist file /usr/share/ssh/blacklist.RSA-2048
debug1: Checking blacklist file /etc/ssh/blacklist.RSA-2048
debug1: identity file /home/peter/.ssh/id_rsa-cert type -1
debug1: identity file /home/peter/.ssh/id_dsa type -1
debug1: identity file /home/peter/.ssh/id_dsa-cert type -1
debug1: identity file /home/peter/.ssh/id_ecdsa type -1
debug1: identity file /home/peter/.ssh/id_ecdsa-cert type -1
[SNIP …]
debug2: we sent a publickey packet, wait for reply
debug1: Authentications that can continue: publickey
debug1: Trying private key: /home/peter/.ssh/id_dsa
debug3: no such identity: /home/peter/.ssh/id_dsa
debug1: Trying private key: /home/peter/.ssh/id_ecdsa
debug3: no such identity: /home/peter/.ssh/id_ecdsa
debug2: we did not send a packet, disable method
debug1: No more authentication methods to try. **Permission denied (publickey).**
最佳解决方法
这种情况很正常，并不奇怪。你收到的消息：
debug3: Incorrect RSA1 identifier
debug3: Could not load “/home/user_name/.ssh/id_rsa” as a RSA1 public key
确实没有表明错误。 RSA1公钥仅用于SSH协议1，该协议已经过时。如今，主要使用SSH协议2。
在正常的SSH登录过程中，您很可能会看到带有ssh -vvv的警告消息。你可能会感到惊讶，但不要担心，这是正常的。
参考：https://bbs.archlinux.org/viewtopic.php?id=122646，＃9