Amazon web services AWS公钥被拒绝问题

我读了这篇文章：

那里的信息是相关的，但不能帮助我解决问题。我以前可以使用ec2用户通过以下命令登录AWS上的linux实例：

ssh-i key.pem ec2 user@[address].compute-1.amazonaws.com从我的MacBook终端

在过去的几周里，我现在遇到了这个错误：

“权限被拒绝（公钥）。”

我试过了

ssh-v-i key.pem ec2 user@[address].compute-1.amazonaws.com从我的MacBook终端

我得到这个输出：

OpenSSH_5.2p1, OpenSSL 0.9.8r 8 Feb 2011
debug1: Reading configuration data /etc/ssh_config
debug1: Connecting to [address].compute-1.amazonaws.com [address] port 22.
debug1: Connection established.
debug1: identity file key.pem type -1
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.3
debug1: match: OpenSSH_5.3 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.2
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 '[address].compute-1.amazonaws.com' is known and matches the RSA host key.
debug1: Found key in [path]/.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: 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: 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).

OpenSSH_5.2p1，OpenSSL 0.9.8r 2011年2月8日
debug1:读取配置数据/etc/ssh\u config
debug1:正在连接到[address]。compute-1.amazonaws.com[address]端口22。
debug1:已建立连接。
debug1:标识文件key.pem类型-1
debug1：远程协议版本2.0，远程软件版本OpenSSH_5.3
debug1:match:OpenSSH_5.3 pat OpenSSH*
debug1:启用协议2.0的兼容模式
debug1:本地版本字符串SSH-2.0-OpenSSH_5.2
debug1:SSH2\u MSG\u KEXINIT已发送
debug1:SSH2\u MSG\u KEXINIT已收到
debug1:kex:server->client aes128 ctr hmac-md5无
debug1:kex:客户端->服务器aes128 ctr hmac-md5无
debug1:SSH2_MSG_KEX_DH_GEX_请求（1024您可能必须以root身份登录。如果使用bitnami映像，请以“bitnami”身份登录

e、 g.
ssh-v-i key.pem bitnami@[address].compute-1.amazonaws.com
您是否尝试过呼叫亚马逊支持部门？在过去几周中，您是否执行了任何操作-在AWS中生成新密钥或在您的计算机中删除ssh密钥等。显然，您的ssh密钥似乎有问题。您是否尝试了root用户？