Ubuntu SSH Amazon EC2:权限被拒绝（公钥）

您好，我正在尝试下面的命令以连接到新的ec2实例。但是我无法连接（某些位被编辑以隐藏个人详细信息）

ssh-i blugg.pemubuntu@ec2-xx-xx-xx-x.us-west-2.compute.amazonaws.com-v-l blugg
OpenSSH_5.9p1、OpenSSL 0.9.8x 2012年5月10日
debug1:读取配置数据/etc/ssh\u config
debug1:/etc/ssh\u配置第20行：应用*
debug1:连接到ec2-xx-xxx-xx-x.us-west-2.compute.amazonaws.com[54.200.44.9]端口22。
debug1:已建立连接。
debug1:标识文件blugg.pem类型-1
debug1:标识文件blugg.pem-cert类型-1
debug1：远程协议版本2.0，远程软件版本OpenSSH_6.2
debug1:match:OpenSSH_6.2 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_5.9
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\u MSG\u KEX\u DH\u GEX\u请求（1024个ec2用户或ec2用户@修复了此问题。
修复，要连接的用户名为“ec2用户”
ssh -i blugg.pem ubuntu@ec2-xx-xx-xx-x.us-west-2.compute.amazonaws.com -v -l blugg

OpenSSH_5.9p1, OpenSSL 0.9.8x 10 May 2012
debug1: Reading configuration data /etc/ssh_config
debug1: /etc/ssh_config line 20: Applying options for *
debug1: Connecting to ec2-xx-xxx-xx-x.us-west-2.compute.amazonaws.com [54.200.44.9] port 22.
debug1: Connection established.
debug1: identity file blugg.pem type -1
debug1: identity file blugg.pem-cert type -1
debug1: Remote protocol version 2.0, remote software version OpenSSH_6.2
debug1: match: OpenSSH_6.2 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.9
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 70:71:f0:f0:33:b5:a
debug1: Host 'ec2-xx-xxx-xx-x.us-west-2.compute.amazonaws.com' is known and matches the RSA host key.
debug1: Found key in /Users/bluggHome/.ssh/known_hosts:10
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: Offering RSA public key: /Users/bluggHome/.ssh/blugg.pem
debug1: Authentications that can continue: publickey
debug1: Trying private key: blugg.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).
Aaron-Lotes-Air:.ssh bluggHome$ ssh -i blugg.pem ubuntu@ec2-xx-xxx-xx-x.us-west-2.compute.amazonaws.com -v -l blugg