Ssh 未指定的GSS故障，没有可用的Kerberos凭据

我试图通过ssh连接到服务器，但出现以下错误： “未指定的GSS故障。次要代码可能提供详细信息没有可用的Kerberos凭据”

我不太清楚这是什么意思。（仍在尝试谷歌搜索）

；ssh-vT-p1234root@mysite.com
OpenSSH_6.6.1、OpenSSL 1.0.1f 2014年1月6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*
debug1:连接到mysite.com[1.2.3.4]端口1234。
debug1:已建立连接。
debug1:identity file/home/kenpeter/.ssh/id\u rsa类型1
debug1:identity file/home/kenpeter/.ssh/id\u rsa-cert类型-1
debug1:identity file/home/kenpeter/.ssh/id_dsa type-1
debug1:identity file/home/kenpeter/.ssh/id_dsa-cert type-1
debug1:identity file/home/kenpeter/.ssh/id_ecdsa type-1
debug1:identity file/home/kenpeter/.ssh/id_ecdsa-cert type-1
debug1:identity file/home/kenpeter/.ssh/id_ed25519 type-1
debug1:identity file/home/kenpeter/.ssh/id_ed25519-cert type-1
debug1:启用协议2.0的兼容模式
debug1：本地版本字符串SSH-2.0-OpenSSH_6.6.1p1 Ubuntu-8
debug1：远程协议版本2.0，远程软件版本OpenSSH_5.3
debug1:匹配：OpenSSH_5.3 pat OpenSSH_5*compat 0x0000000
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远程服务器允许root远程访问，但密码已更改，与我的文档不同

; ssh -vT -p 1234 root@mysite.com
OpenSSH_6.6.1, OpenSSL 1.0.1f 6 Jan 2014
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: Connecting to mysite.com [1.2.3.4] port 1234.
debug1: Connection established.
debug1: identity file /home/kenpeter/.ssh/id_rsa type 1
debug1: identity file /home/kenpeter/.ssh/id_rsa-cert type -1
debug1: identity file /home/kenpeter/.ssh/id_dsa type -1
debug1: identity file /home/kenpeter/.ssh/id_dsa-cert type -1
debug1: identity file /home/kenpeter/.ssh/id_ecdsa type -1
debug1: identity file /home/kenpeter/.ssh/id_ecdsa-cert type -1
debug1: identity file /home/kenpeter/.ssh/id_ed25519 type -1
debug1: identity file /home/kenpeter/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_6.6.1p1 Ubuntu-8
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.3
debug1: match: OpenSSH_5.3 pat OpenSSH_5* compat 0x0c000000
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<3072<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 xxxxx....xxxxxx....
debug1: Host '[mysite.com]:1234' is known and matches the RSA host key.
debug1: Found key in /home/kenpeter/.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: Roaming not allowed by server
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password
debug1: Next authentication method: gssapi-keyex
debug1: No valid Key exchange context
debug1: Next authentication method: gssapi-with-mic
debug1: Unspecified GSS failure.  Minor code may provide more information
No Kerberos credentials available

debug1: Unspecified GSS failure.  Minor code may provide more information
No Kerberos credentials available

debug1: Unspecified GSS failure.  Minor code may provide more information


debug1: Unspecified GSS failure.  Minor code may provide more information
No Kerberos credentials available

debug1: Next authentication method: publickey
debug1: Offering RSA public key: /home/kenpeter/.ssh/id_rsa
debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password
debug1: Trying private key: /home/kenpeter/.ssh/id_dsa
debug1: Trying private key: /home/kenpeter/.ssh/id_ecdsa
debug1: Trying private key: /home/kenpeter/.ssh/id_ed25519
debug1: Next authentication method: password
root@mysite.com's password: