【发布时间】：2016-04-27 00:02:58
【问题描述】：
这个问题已经被问过很多次了（我今天已经阅读了很多），但我仍然看不出我在尝试 ssh 到 EC2 实例时做错了什么。这是我所做的：
这是一个 EC2 中型实例，运行 ubuntu Linux。 我创建了一个新的密钥对并下载了 rick_casey.pem 文件， 将其移至 ~/.ssh，然后
chmod 400 rick_casey.pem
然后将其添加到我的 ssh 身份中：
ssh-add rick_casey.pem
但是当我尝试连接时，会发生以下情况：
ssh -v -i "rick_casey.pem" ubuntu@ec2-54-237-54-42.compute-1..amazonaws.com
OpenSSH_6.9p1, LibreSSL 2.1.8
debug1: Reading configuration data /Users/rickcasey/.ssh/config
debug1: /Users/rickcasey/.ssh/config line 8: Applying options for *.amazonaws.com
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 20: Applying options for *
debug1: /etc/ssh/ssh_config line 53: Applying options for *
debug1: Connecting to ec2-54-237-54-42.compute-1.amazonaws.com [54.237.54.42] port 22.
debug1: Connection established.
debug1: key_load_public: No such file or directory
debug1: identity file rick_casey.pem type -1
debug1: key_load_public: No such file or directory
debug1: identity file rick_casey.pem-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/rickcasey/.ssh/rick_casey.pem type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/rickcasey/.ssh/rick_casey.pem-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_6.9
debug1: Remote protocol version 2.0, remote software version OpenSSH_6.6.1p1 Ubuntu-2ubuntu2.6
debug1: match: OpenSSH_6.6.1p1 Ubuntu-2ubuntu2.6 pat OpenSSH_6.6.1* compat 0x04000000
debug1: Authenticating to ec2-54-237-54-42.compute-1.amazonaws.com:22 as 'ubuntu'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client chacha20-poly1305@openssh.com <implicit> none
debug1: kex: client->server chacha20-poly1305@openssh.com <implicit> none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ecdsa-sha2-nistp256 SHA256:Zu9shRhr3d+STyKTHKkhE2ZC1esSrALqNPGj3UtN8IA
Warning: Permanently added 'ec2-54-237-54-42.compute-1.amazonaws.com,54.237.54.42' (ECDSA) to the list of known hosts.
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Offering RSA public key: rick_casey.pem
debug1: Authentications that can continue: publickey
debug1: Trying private key: rick_casey.pem
debug1: Authentications that can continue: publickey
debug1: Trying private key: /Users/rickcasey/.ssh/rick_casey.pem
debug1: Authentications that can continue: publickey
debug1: No more authentication methods to try.
Permission denied (publickey).
在我看来可疑的是这行：
debug1: key_load_public: No such file or directory
有人知道这是什么意思吗？这是不是公钥有问题？当您生成 AWS 密钥对时，公钥是否不会自动添加到它应该在的 AWS 服务器中？
其他用户可以毫无问题地通过 ssh 登录到该服务器，所以我没有理由不能做同样的事情......但是有人对我应该尝试什么有建议吗？
谢谢， 瑞克
【问题讨论】：
-
可以删除已知主机再试一次吗？
-
让另一个用户登录并检查您的新密钥是否存在于服务器上的 authorized_keys 中。如果没有，请在此处添加。
-
“ubuntu”是正确的用户名吗？
-
你的用户名是什么？使用它而不是
ubuntu -
我的实例中至少有一半是 Ubuntu，而且我一直不得不使用
ec2-user作为登录名。
标签： amazon-web-services ssh amazon-ec2