我正在尝试使用 SSH 访问 EC2 上的新 Ubuntu 实例。我注意到很多人都遇到了同样的问题，并使用了不同的解决方法，但到目前为止还无法解决这个问题。
任何帮助将不胜感激。
>$ ssh -l ubuntu -v -i TBKEY1.pem ec2-46-137-225-40.ap-southeast-1.compute.amazonaws.com
>OpenSSH_6.0p1, OpenSSL 1.0.1b 26 Apr 2012
>debug1: Connecting to ec2-46-137-225-40.ap-southeast-1.compute.amazonaws.com [46.137.225.40] port 22.
>debug1: Connection established.
>debug1: identity file TBKEY1.pem type -1
>debug1: identity file TBKEY1.pem-cert type -1 [-pebug1: Remote protocol version 2.0, remote software version OpenSSH_5.3p1 Debian-3ubuntu6
>debug1: match: OpenSSH_5.3p1 Debian-3ubuntu6 pat OpenSSH_5*
>debug1: Enabling compatibility mode for protocol 2.0
>debug1: Local version string SSH-2.0-OpenSSH_6.0
>debug1: SSH2_MSG_KEXINIT sent
>debug1: SSH2_MSG_KEXINIT received
>debug1: kex: server->client aes128-ctr hmac-md5 none
>debug1: kex: client->server aes128-ctr hmac-md5 none
>debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent
>debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
>debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
>debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
>debug1: Server host key: RSA 77:49:93:95:2f:c5:b2:9c:d3:1b:f0:34:fb:23:b1:8c
>debug1: Host 'ec2-46-137-225-40.ap-southeast-1.compute.amazonaws.com' is known and matches the RSA host key.
>debug1: Found key in /home/Ma/.ssh/known_hosts:1
>debug1: ssh_rsa_verify: signature correct
>debug1: SSH2_MSG_NEWKEYS sent
>debug1: expecting SSH2_MSG_NEWKEYS
>debug1: SSH2_MSG_NEWKEYS received
>debug1: Roaming not allowed by server
>debug1: SSH2_MSG_SERVICE_REQUEST sent
>debug1: SSH2_MSG_SERVICE_ACCEPT received
>debug1: Authentications that can continue: publickey
>debug1: Next authentication method: publickey
>debug1: Trying private key: TBKEY1.pem
>debug1: read PEM private key done: type RSA
>debug1: Authentications that can continue: publickey
>debug1: No more authentication methods to try.
>Permission denied (publickey).
最佳答案
曾经我也遇到过类似的问题。我无法解决它，但我解决了它。您可以做的是从您尝试访问的计算机的 EBS 创建 AMI，然后从该 AMI 启动一个新实例并指定创建新 key 对。然后，AWS 应该将您的新私钥添加到 allowed_keys 中，并让您进入新机器。那时你就可以击落旧的了。
希望这有帮助。
关于SSH 访问 AWS EC2 - 权限被拒绝，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/10386720/