Question

我通过ssh连接我的ec2实例，添加新的EBS卷后，通过'sudo shutdown -r now'重启机器

然后我尝试使用follwing命令访问：

ssh -v  -i primary_key.pem ubuntu@ec2-23-22-245-160.compute-1.amazonaws.com

正在重新调整，如下所示：

OpenSSH_5.6p1, OpenSSL 0.9.8r 8 Feb 2011
debug1: Reading configuration data /Users/caveman/.ssh/config
debug1: Reading configuration data /etc/ssh_config
debug1: Applying options for *
debug1: Connecting to ec2-23-22-245-160.compute-1.amazonaws.com [23.22.245.160] port 22.
debug1: Connection established.
debug1: identity file primary_key.pem type -1
debug1: identity file primary_key.pem-cert type -1
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.9p1 Debian-5ubuntu1
debug1: match: OpenSSH_5.9p1 Debian-5ubuntu1 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.6
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: Host 'ec2-23-22-245-160.compute-1.amazonaws.com' is known and matches the RSA host key.
debug1: Found key in /Users/caveman/.ssh/known_hosts:31
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: primary_key.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).

出了什么问题？我错过了哪一点？

Answer 1

这是正常的Amazon EC2行为。重新启动实例后，将更改关联的公共IP（您的ec2-23-22-245-160.compute-1.amazonaws.com）。

通过ssh连接您的实例有两种方法

登录您的Amazon AWS控制台并检查正在运行的实例，然后复制公共DNS并尝试连接ssh。（ssk键是相同的）
如果您不希望在每次重启/终止时更改实例的公共IP，请使用弹性IP。与帐户（而不是实例）关联的弹性Ips，因此您可以在所需的任何实例上分配Elastic Ip。

您可以使用ssh ssh -v -i primary_key.pem ubuntu@<ElasticIp>

Answer 2

我有类似的问题。这就是我做的......！

ssh -i < .pem file> -vvv <server IP>

以上命令将显示调试日志，并且在您接受ECDSA密钥后。

重启后EC2无法通过ssh访问

2 个答案: