阿帕奇mod_auth_kerb;kerb_authenticate_user输入用户(NULL）和auth_type

我正在尝试在Windows Server 2008中使用ActiveDirectory设置与kerberos的集成Windows身份验证，一切正常，我能够在成功登录时获得kerberos票证。我在将此票证转发到配置了 Apache 的服务器时遇到问题。当放弃票证时，未在 Apache/PHP 环境变量中设置工单KRB5CCNAME。

我的 kerberos 配置文件 (krb5.conf( 是

[logging]
 default = FILE:/var/log/krb5libs.log
 kdc = FILE:/var/log/krb5kdc.log
 admin_server = FILE:/var/log/kadmind.log
[libdefaults]
 default_realm = DIVAMI.COM
 default_keytab_file = /etc/krb5.keytab
 dns_lookup_realm = true
 dns_lookup_kdc = true
 ticket_lifetime = 24h
 renew_lifetime = 7d
 forwardable = true
[realms]
 DIVAMI.COM = {
  kdc = meluha.divami.com:88
  admin_server = meluha.divami.com:749
  default_domain = divami.com
 }
[domain_realm]
meluha.divami.com = DIVAMI.COM
divami.com = DIVAMI.COM

Apache mod_auth_kerb配置文件(auth_kerb( 是

<Location /perfmon>
  AuthType Kerberos
  AuthName "Kerberos Login"
  KrbMethodNegotiate On
  KrbMethodK5Passwd Off
  KrbAuthRealms DIVAMI.COM
  Krb5KeyTab /etc/httpd/conf.d/apache.keytab
  KrbSaveCredentials On
  KrbServiceName HTTP/greenplum.divami.com
  require valid-user
  ErrorDocument 404 "No favicon"
</Location>

浏览器配置

火狐

Set network.negotiate-auth.delegation-uris to greenplum.divami.com.
Set network.negotiate-auth.trusted-uris to greenplum.divami.com

IE

 In Internet Explorer, select Tools > Internet Options.
 In the Local Internet (Advanced) dialog box, enter all relative domain names that will be used on the intranet (e.g. greenplum.divami.com).

当我将 KrbMethodK5Passwd 设置为 On 时，浏览器会生成 kerberos 用户名和密码以提供有效凭据票证，并在 Apache/PHP 环境变量 KRB5CCNAME 中设置其缓存位置。使用此变量KRB5CCNAME，我们可以使用被放弃的 kerberos 票证作为身份验证凭据。

当 KrbMethodK5Passwd 关闭时，我收到以下错误消息。

[Wed Sep 25 18:48:11 2013] [debug] src/mod_auth_kerb.c(1939): [client 10.81.17.156] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos
[Wed Sep 25 18:48:11 2013] [debug] src/mod_auth_kerb.c(1939): [client 10.81.17.156] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos
[Wed Sep 25 18:48:11 2013] [debug] src/mod_auth_kerb.c(1278): [client 10.81.17.156] Acquiring creds for HTTP/greenplum.divami.com
[Wed Sep 25 18:48:11 2013] [debug] src/mod_auth_kerb.c(1691): [client 10.81.17.156] Verifying client data using KRB5 GSS-API
[Wed Sep 25 18:48:11 2013] [debug] src/mod_auth_kerb.c(1707): [client 10.81.17.156] Client didn't delegate us their credential
[Wed Sep 25 18:48:11 2013] [debug] src/mod_auth_kerb.c(1726): [client 10.81.17.156] GSS-API token of length 180 bytes will be sent back
plum.divami.com/perfmon/login.php
[Wed Sep 25 18:48:11 2013] [debug] src/mod_auth_kerb.c(1691): [client 10.81.17.156] Verifying client data using KRB5 GSS-API , referer:http://greenplum.divami.com/perfmon/login.php

我不知道是浏览器无法选择kerberos票证，还是浏览器选择了票证但无法在KRB5CCNAME中设置缓存位置。请帮助我解决这个问题。