ssh-Amazon EC2上的权限被拒绝（公钥）

我一直在Win7上通过SSH访问我的EC2实例。我并没有试图在Ubuntu 12.04上的另一台pc上用ssh将其连接到另一台pc上，这是一个“权限被拒绝（公钥）”错误。我一直在搜索此问题，并尝试了以下方法：

ssh -vvv -i ~/.ssh/leno.pem ubuntu@ec2-50-19-199-128.compute-1.amazonaws.com

• 已删除现有密钥，并在EC2仪表板上创建/下载了一个新密钥
• 将新密钥放在我的~/.ssh文件夹中
• 使用此命令更改了密钥的访问权限（也尝试了400）：
  chmod 600~/.ssh/leno.pem

• 使用此命令更改了.ssh文件夹的访问权限（也尝试了700）：
  chmod 755~/.ssh

• 也尝试过这样做：
  添加ssh~/.ssh/leno.pem

不走运。当我尝试运行以下命令时：

ssh -vvv -i ~/.ssh/leno.pem ubuntu@ec2-50-19-199-128.compute-1.amazonaws.com

我得到这个信息：

OpenSSH_5.9p1 Debian-5ubuntu1, OpenSSL 1.0.1 14 Mar 2012
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug2: ssh_connect: needpriv 0
debug1: Connecting to ec2-50-19-199-128.compute-1.amazonaws.com [50.19.199.128] port 22.
debug1: Connection established.
debug3: Incorrect RSA1 identifier
debug3: Could not load "/home/murat/.ssh/leno.pem" as a RSA1 public key
debug1: identity file /home/murat/.ssh/leno.pem type -1
debug1: identity file /home/murat/.ssh/leno.pem-cert type -1
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.5p1 Debian-4ubuntu6
debug1: match: OpenSSH_5.5p1 Debian-4ubuntu6 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.9p1 Debian-5ubuntu1
debug2: fd 3 setting O_NONBLOCK
debug3: load_hostkeys: loading entries for host "ec2-50-19-199-128.compute-1.amazonaws.com" from file "/home/murat/.ssh/known_hosts"
debug3: load_hostkeys: found key type RSA in file /home/murat/.ssh/known_hosts:1
debug3: load_hostkeys: loaded 1 keys
debug3: order_hostkeyalgs: prefer hostkeyalgs: ssh-rsa-cert-v01@openssh.com,ssh-rsa-cert-v00@openssh.com,ssh-rsa
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug2: kex_parse_kexinit: ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
debug2: kex_parse_kexinit: ssh-rsa-cert-v01@openssh.com,ssh-rsa-cert-v00@openssh.com,ssh-rsa,ecdsa-sha2-nistp256-cert-v01@openssh.com,ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,ssh-dss-cert-v01@openssh.com,ssh-dss-cert-v00@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-dss
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-sha2-256,hmac-sha2-256-96,hmac-sha2-512,hmac-sha2-512-96,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-sha2-256,hmac-sha2-256-96,hmac-sha2-512,hmac-sha2-512-96,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,zlib@openssh.com,zlib
debug2: kex_parse_kexinit: none,zlib@openssh.com,zlib
debug2: kex_parse_kexinit: 
debug2: kex_parse_kexinit: 
debug2: kex_parse_kexinit: first_kex_follows 0 
debug2: kex_parse_kexinit: reserved 0 
debug2: kex_parse_kexinit: diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
debug2: kex_parse_kexinit: ssh-rsa,ssh-dss
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,zlib@openssh.com
debug2: kex_parse_kexinit: none,zlib@openssh.com
debug2: kex_parse_kexinit: 
debug2: kex_parse_kexinit: 
debug2: kex_parse_kexinit: first_kex_follows 0 
debug2: kex_parse_kexinit: reserved 0 
debug2: mac_setup: found hmac-md5
debug1: kex: server->client aes128-ctr hmac-md5 none
debug2: mac_setup: found hmac-md5
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
debug2: dh_gen_key: priv key bits set: 142/256
debug2: bits set: 534/1024
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug1: Server host key: RSA c4:de:26:09:64:6f:7c:48:6b:2b:ef:8c:c5:b7:cc:1f
debug3: load_hostkeys: loading entries for host "ec2-50-19-199-128.compute-1.amazonaws.com" from file "/home/murat/.ssh/known_hosts"
debug3: load_hostkeys: found key type RSA in file /home/murat/.ssh/known_hosts:1
debug3: load_hostkeys: loaded 1 keys
debug3: load_hostkeys: loading entries for host "50.19.199.128" from file "/home/murat/.ssh/known_hosts"
debug3: load_hostkeys: found key type RSA in file /home/murat/.ssh/known_hosts:2
debug3: load_hostkeys: loaded 1 keys
debug1: Host 'ec2-50-19-199-128.compute-1.amazonaws.com' is known and matches the RSA host key.
debug1: Found key in /home/murat/.ssh/known_hosts:1
debug2: bits set: 514/1024
debug1: ssh_rsa_verify: signature correct
debug2: kex_derive_keys
debug2: set_newkeys: mode 1
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug2: set_newkeys: mode 0
debug1: SSH2_MSG_NEWKEYS received
debug1: Roaming not allowed by server
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug2: key: leno.pem (0x7feb7db9aa10)
debug2: key: /home/murat/.ssh/leno.pem ((nil))
debug1: Authentications that can continue: publickey
debug3: start over, passed a different list publickey
debug3: preferred gssapi-keyex,gssapi-with-mic,publickey,keyboard-interactive,password
debug3: authmethod_lookup publickey
debug3: remaining preferred: keyboard-interactive,password
debug3: authmethod_is_enabled publickey
debug1: Next authentication method: publickey
debug1: Offering RSA public key: leno.pem
debug3: send_pubkey_test
debug2: we sent a publickey packet, wait for reply
debug1: Authentications that can continue: publickey
debug1: Trying private key: /home/murat/.ssh/leno.pem
debug1: read PEM private key done: type RSA
debug3: sign_and_send_pubkey: RSA ab:3a:89:be:34:43:5a:40:5f:8a:0c:ba:5d:33:bd:cb
debug2: we sent a publickey packet, wait for reply
debug1: Authentications that can continue: publickey
debug2: we did not send a packet, disable method
debug1: No more authentication methods to try.
Permission denied (publickey).

OpenSSH_5.9p1 Debian-5ubuntu1，OpenSSL 1.0.1 2012年3月14日
debug1:读取配置数据/etc/ssh/ssh\u config
debug1:/etc/ssh/ssh\u配置第19行：应用*
debug2:ssh\u connect:needpriv 0
debug1:连接到ec2-50-19-199-128.compute-1.amazonaws.com[50.19.199.128]端口22。
debug1:已建立连接。
debug3:错误的RSA1标识符
debug3:无法将“/home/murat/.ssh/leno.pem”作为RSA1公钥加载
debug1:identity file/home/murat/.ssh/leno.pem type-1
debug1:identity file/home/murat/.ssh/leno.pem-cert type-1
debug1：远程协议版本2.0，远程软件版本OpenSSH_5.5p1 Debian-4ubuntu6
debug1:match:OpenSSH_5.5p1 Debian-4ubuntu6 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_5.9p1 Debian-5ubuntu1
调试2:fd 3设置O_非块
debug3:加载主机密钥：从文件“/home/murat/.ssh/known_hosts”加载主机“ec2-50-19-199-128.compute-1.amazonaws.com”的条目
debug3:load_hostkeys:在文件/home/murat/.ssh/known_hosts:1中找到密钥类型RSA
debug3:加载主机密钥：加载1个密钥
debug3:order\u hostkeyalgs:preference hostkeyalgs:ssh rsa证书-v01@openssh.com，ssh rsa证书-v00@openssh.com，ssh-rsa
debug1:SSH2\u MSG\u KEXINIT已发送
debug1:SSH2\u MSG\u KEXINIT已收到
debug2:kex_parse_kexinit:ecdh-sha2-nistp256，ecdh-sha2-nistp384，ecdh-sha2-nistp521，diffie-hellman-group-exchange-sha256，diffie-hellman-group-exchange-sha1，diffie-hellman-group14-sha1，diffie-hellman-group1-sha1
debug2:kex_parse_kexinit:ssh rsa证书-v01@openssh.com，ssh rsa证书-v00@openssh.com，ssh rsa，ecdsa-sha2-nistp256-cert-v01@openssh.com，ecdsa-sha2-nistp384-cert-v01@openssh.com，ecdsa-sha2-nistp521-cert-v01@openssh.com，ssh-dss证书-v01@openssh.com，ssh-dss证书-v00@openssh.com，ecdsa-sha2-nistp256，ecdsa-sha2-nistp384，ecdsa-sha2-nistp521，ssh dss
debug2:kex_parse_kexinit:aes128 ctr、aes192 ctr、aes256 ctr、arcfour256、arcfour128、aes128 cbc、3des cbc、河豚cbc、cast128 cbc、aes192 cbc、aes256 cbc、arcfour、rijndael-cbc@lysator.liu.se
debug2:kex_parse_kexinit:aes128 ctr、aes192 ctr、aes256 ctr、arcfour256、arcfour128、aes128 cbc、3des cbc、河豚cbc、cast128 cbc、aes192 cbc、aes256 cbc、arcfour、rijndael-cbc@lysator.liu.se
debug2:kex_parse_kexinit:hmac-md5，hmac-sha1，umac-64@openssh.com，hmac-sha2-256，hmac-sha2-256-96，hmac-sha2-512，hmac-sha2-512-96，hmac-ripemd160，hmac-ripemd160@openssh.com，hmac-sha1-96，hmac-md5-96
debug2:kex_parse_kexinit:hmac-md5，hmac-sha1，umac-64@openssh.com，hmac-sha2-256，hmac-sha2-256-96，hmac-sha2-512，hmac-sha2-512-96，hmac-ripemd160，hmac-ripemd160@openssh.com，hmac-sha1-96，hmac-md5-96
debug2:kex_parse_kexinit:none，zlib@openssh.com，zlib
debug2:kex_parse_kexinit:none，zlib@openssh.com，zlib
debug2:kex_parse_kexinit:
debug2:kex_parse_kexinit:
debug2:kex_parse_kexinit:first_kex_跟随0
debug2:kex_parse_kexinit:保留0
debug2:kex_parse_kexinit:diffie-hellman-group-exchange-sha256，diffie-hellman-group-exchange-sha1，diffie-hellman-group14-sha1，diffie-hellman-group1-sha1
debug2:kex_parse_kexinit:ssh rsa，ssh dss
debug2:kex_parse_kexinit:aes128 ctr、aes192 ctr、aes256 ctr、arcfour256、arcfour128、aes128 cbc、3des cbc、河豚cbc、cast128 cbc、aes192 cbc、aes256 cbc、arcfour、rijndael-cbc@lysator.liu.se
debug2:kex_parse_kexinit:aes128 ctr、aes192 ctr、aes256 ctr、arcfour256、arcfour128、aes128 cbc、3des cbc、河豚cbc、cast128 cbc、aes192 cbc、aes256 cbc、arcfour、rijndael-cbc@lysator.liu.se
debug2:kex_parse_kexinit:hmac-md5，hmac-sha1，umac-64@openssh.com，hmac-ripemd160，hmac-ripemd160@openssh.com，hmac-sha1-96，hmac-md5-96
debug2:kex_parse_kexinit:hmac-md5，hmac-sha1，umac-64@openssh.com，hmac-ripemd160，hmac-ripemd160@openssh.com，hmac-sha1-96，hmac-md5-96
debug2:kex_parse_kexinit:none，zlib@openssh.com
debug2:kex_parse_kexinit:none，zlib@openssh.com
debug2:kex_parse_kexinit:
debug2:kex_parse_kexinit:
debug2:kex_parse_kexinit:first_kex_跟随0
debug2:kex_parse_kexinit:保留0
debug2:mac_安装程序：找到hmac-md5
debug1:kex:server->client aes128 ctr hmac-md5无
debug2:mac_安装程序：找到hmac-md5
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执行此操作时：

删除了现有密钥，并在EC2上创建/下载了一个新密钥
仪表板

您不会更改现有实例上的密钥。您所做的只是创建一个可以分配给新启动的实例的新密钥

您正在连接到实例，该实例正在响应。出现此错误时，表示您连接的用户不存在，或者您的公钥未安装在该用户
授权密钥文件中。
我通过以下步骤解决了此问题：

1-使用以下命令向您ssh-key.pem授予权限：

chmod 400 ssh-key.pem

2-使用命令ssh keygen获取公钥并复制它：

ssh-keygen -y -f ssh-key.pem

3-打开AWS控制台并选择实例，然后单击“连接”按钮

4-单击EC2实例连接并单击按钮连接以打开远程终端。
5-执行该命令后：

vi ~/.ssh/authorized_keys

6-在第2步通过本地生成的密钥更改服务器密钥

7-保存您的文件

8-打开本地终端

9-使用此命令进行co