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我正在从server1 SSH到server2。我生成了id_rsa和id_rsa.pub文件。如果我 ssh 到 mike@server2 它工作正常，但 ssh 到 john@server2 没有密码就无法工作。mike 和 john 主目录都包含“.ssh”，即 chmod 700，该文件夹包含“authorized_keys”，其中仅包含先前生成的 id_rsa.pub 文件的内容（并且是 chmod 600）。两者的内容是一样的。

服务器 1：Linux x86_64 x86_64 x86_64 GNU/Linux

服务器 2：AIX 5.3.0.0 64 位

命令 1，用户 Mike（无需密码即可使用）： ssh -v -n -o StrictHostKeychecking=no -o NumberOfPasswordPrompts=0 mike@server2 echo Hello

~drwx------ 7 mike mike 4096 Jan 19 2011 .

~/.sshdrwx------ 2 mike mike 256 Nov 28 16:39 .ssh

~/.ssh/authorized_keys-rw------- 1 mike mike 823 Apr 06 11:56 .ssh/authorized_keys

命令 2，用户 John（需要密码） ssh -v -n -o StrictHostKeychecking=no -o NumberOfPasswordPrompts=0 john@server2 echo Hello

~drwx------ 12 john jgroup 4096 Apr 06 23:13 .

~/.sshdrwx------ 2 john jgroup 256 Apr 06 23:56 .ssh

~/.ssh/authorized_keys-rw------- 1 john jgroup 414 Apr 06 11:55 .ssh/authorized_keys

上面命令 2 的 ssh -v 输出：

OpenSSH_4.3p2, OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug1: Connecting to server2 [X.X.X.X] port 22.
debug1: Connection established.
debug1: identity file /home/will/.ssh/identity type -1
debug1: identity file /home/will/.ssh/id_rsa type 1
debug1: identity file /home/will/.ssh/id_dsa type -1
debug1: loaded 3 keys
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.0
debug1: match: OpenSSH_5.0 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_4.3
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-cbc hmac-md5 none
debug1: kex: client->server aes128-cbc 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 'server2' is known and matches the RSA host key.
debug1: Found key in /home/will/.ssh/known_hosts:838
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

This network/computer system is for the use of authori...
.........................................................

debug1: Authentications that can continue: publickey,password,keyboard-interactive
debug1: Next authentication method: publickey
debug1: Trying private key: /home/will/.ssh/identity
debug1: Offering public key: /home/will/.ssh/id_rsa
debug1: Authentications that can continue: publickey,password,keyboard-interactive
debug1: Trying private key: /home/will/.ssh/id_dsa
debug1: Next authentication method: keyboard-interactive
debug1: Next authentication method: password
debug1: No more authentication methods to try.
Permission denied (publickey,password,keyboard-interactive).

任何人都知道为什么它会与一个用户而不是另一个用户一起工作（两者都在同一台服务器上）？

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2 回答 2

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无法使用密钥进行身份验证的常见原因：

  • ~/.ssh 上的权限或所有权设置不正确（我看到你已经检查过了）
  • 公钥已损坏
  • 公钥用于与私钥不同的密钥

还要检查服务器的auth.log.

于 2012-04-07T04:50:52.547 回答
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你能够以迈克的身份登录是一个真正的笨蛋。您可以尝试制作authorized_keys2文件。authorized_keys不适用于所有版本的 OpenSSH。

ln -s authorized_keys authorized_keys2
于 2013-03-26T15:05:24.860 回答