我正在关注指导设置 kerberos 服务器。kerberos 服务器的系统配置如下，有人可以帮我解决这个问题吗？如能得到任何帮助我将不胜感激。
以下是我看到的问题：
root@openldap ~# kadmin -p admin
Authenticating as principal admin with password.
kadmin: Cannot resolve network address for admin server in requested realm while initializing kadmin interface
...以及相关的系统信息/配置：
root@openldap ~# uname -a
Linux openldap 3.2.0-4-amd64 #1 SMP Debian 3.2.68-1+deb7u3 x86_64 GNU/Linux
root@openldap ~# cat /etc/hosts
127.0.0.1 localhost
10.5.126.24:464 krb.ixsystems.com
#Required for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts
root@openldap ~# cat /etc/krb5.conf
[libdefaults]
default_realm = IXSYSTEMS.COM
forwardable = true
proxiable = true
[realms]
IXSYSTEMS.COM = {
kdc = kdc1.ixsystems.com
admin_server = krb.ixsystems.com
}
[domain_realm]
.ixsystems.com = IXSYSTEMS.COM
ixsystems.com = IXSYSTEMS.COM
[logging]
kdc = FILE:/var/log/krb5/kdc.log
admin_server = FILE:/var/log/krb5/kadmin.log
default = FILE:/var/log/krb5/kadmin.log
# The following krb5.conf variables are only for MIT Kerberos.
krb4_config = /etc/krb.conf
krb4_realms = /etc/krb.realms
kdc_timesync = 1
ccache_type = 4
forwardable = true
proxiable = true
# The following encryption type specification will be used by MIT Kerberos
# if uncommented. In general, the defaults in the MIT Kerberos code are
# correct and overriding these specifications only serves to disable new
# encryption types as they are added, creating interoperability problems.
#
# Thie only time when you might need to uncomment these lines and change
# the enctypes is if you have local software that will break on ticket
# caches containing ticket encryption types it doesn't know about (such as
# old versions of Sun Java).
# default_tgs_enctypes = des3-hmac-sha1
# default_tkt_enctypes = des3-hmac-sha1
# permitted_enctypes = des3-hmac-sha1
# The following libdefaults parameters are only for Heimdal Kerberos.
v4_instance_resolve = false
v4_name_convert = {
host = {
rcmd = host
ftp = ftp
}
plain = {
something = something-else
}
}
fcc-mit-ticketflags = true
[realms]
IXSYSTEMS.COM = {
kdc = kdc1.ixsystems.com
admin_server = krb.ixsystems.com
}
ATHENA.MIT.EDU = {
kdc = kerberos.mit.edu:88
kdc = kerberos-1.mit.edu:88
kdc = kerberos-2.mit.edu:88
admin_server = kerberos.mit.edu
default_domain = mit.edu
}
MEDIA-LAB.MIT.EDU = {
kdc = kerberos.media.mit.edu
admin_server = kerberos.media.mit.edu
}
ZONE.MIT.EDU = {
kdc = casio.mit.edu
kdc = seiko.mit.edu
admin_server = casio.mit.edu
}
MOOF.MIT.EDU = {
kdc = three-headed-dogcow.mit.edu:88
kdc = three-headed-dogcow-1.mit.edu:88
admin_server = three-headed-dogcow.mit.edu
}
CSAIL.MIT.EDU = {
kdc = kerberos-1.csail.mit.edu
kdc = kerberos-2.csail.mit.edu
admin_server = kerberos.csail.mit.edu
default_domain = csail.mit.edu
krb524_server = krb524.csail.mit.edu
}
IHTFP.ORG = {
kdc = kerberos.ihtfp.org
admin_server = kerberos.ihtfp.org
}
GNU.ORG = {
kdc = kerberos.gnu.org
kdc = kerberos-2.gnu.org
kdc = kerberos-3.gnu.org
admin_server = kerberos.gnu.org
}
1TS.ORG = {
kdc = kerberos.1ts.org
admin_server = kerberos.1ts.org
}
GRATUITOUS.ORG = {
kdc = kerberos.gratuitous.org
admin_server = kerberos.gratuitous.org
}
DOOMCOM.ORG = {
kdc = kerberos.doomcom.org
admin_server = kerberos.doomcom.org
}
ANDREW.CMU.EDU = {
kdc = kerberos.andrew.cmu.edu
kdc = kerberos2.andrew.cmu.edu
kdc = kerberos3.andrew.cmu.edu
admin_server = kerberos.andrew.cmu.edu
default_domain = andrew.cmu.edu
}
CS.CMU.EDU = {
kdc = kerberos.cs.cmu.edu
kdc = kerberos-2.srv.cs.cmu.edu
admin_server = kerberos.cs.cmu.edu
}
DEMENTIA.ORG = {
kdc = kerberos.dementix.org
kdc = kerberos2.dementix.org
admin_server = kerberos.dementix.org
}
stanford.edu = {
kdc = krb5auth1.stanford.edu
kdc = krb5auth2.stanford.edu
kdc = krb5auth3.stanford.edu
master_kdc = krb5auth1.stanford.edu
admin_server = krb5-admin.stanford.edu
default_domain = stanford.edu
}
UTORONTO.CA = {
kdc = kerberos1.utoronto.ca
kdc = kerberos2.utoronto.ca
kdc = kerberos3.utoronto.ca
admin_server = kerberos1.utoronto.ca
default_domain = utoronto.ca
}
[domain_realm]
.mit.edu = ATHENA.MIT.EDU
mit.edu = ATHENA.MIT.EDU
.media.mit.edu = MEDIA-LAB.MIT.EDU
media.mit.edu = MEDIA-LAB.MIT.EDU
.csail.mit.edu = CSAIL.MIT.EDU
csail.mit.edu = CSAIL.MIT.EDU
.whoi.edu = ATHENA.MIT.EDU
whoi.edu = ATHENA.MIT.EDU
.stanford.edu = stanford.edu
.slac.stanford.edu = SLAC.STANFORD.EDU
.toronto.edu = UTORONTO.CA
.utoronto.ca = UTORONTO.CA
[login]
krb4_convert = true
krb4_get_tickets = false
root@openldap ~# netstat -nlp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:749 0.0.0.0:* LISTEN 2061/kadmind
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 2104/lighttpd
tcp 0 0 0.0.0.0:464 0.0.0.0:* LISTEN 2061/kadmind
tcp 0 0 0.0.0.0:754 0.0.0.0:* LISTEN 2299/xinetd
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 2266/sshd
tcp 0 0 0.0.0.0:443 0.0.0.0:* LISTEN 2104/lighttpd
tcp 0 0 0.0.0.0:636 0.0.0.0:* LISTEN 2191/slapd
tcp 0 0 0.0.0.0:12320 0.0.0.0:* LISTEN 2176/shellinaboxd
tcp 0 0 0.0.0.0:12321 0.0.0.0:* LISTEN 2363/perl
tcp 0 0 0.0.0.0:389 0.0.0.0:* LISTEN 2191/slapd
tcp6 0 0 :::749 :::* LISTEN 2061/kadmind
tcp6 0 0 :::80 :::* LISTEN 2104/lighttpd
tcp6 0 0 :::464 :::* LISTEN 2061/kadmind
tcp6 0 0 :::22 :::* LISTEN 2266/sshd
tcp6 0 0 :::636 :::* LISTEN 2191/slapd
tcp6 0 0 :::389 :::* LISTEN 2191/slapd
udp 0 0 0.0.0.0:464 0.0.0.0:* 2061/kadmind
udp 0 0 0.0.0.0:750 0.0.0.0:* 2809/krb5kdc
udp 0 0 0.0.0.0:750 0.0.0.0:* 2035/krb5kdc
udp 0 0 0.0.0.0:12321 0.0.0.0:* 2363/perl
udp 0 0 0.0.0.0:88 0.0.0.0:* 2809/krb5kdc
udp 0 0 0.0.0.0:88 0.0.0.0:* 2035/krb5kdc
udp 0 0 10.5.126.24:123 0.0.0.0:* 2133/ntpd
udp 0 0 127.0.0.1:123 0.0.0.0:* 2133/ntpd
udp 0 0 0.0.0.0:123 0.0.0.0:* 2133/ntpd
udp6 0 0 fe80::20c:29ff:fe03:750 :::* 2809/krb5kdc
udp6 0 0 fe80::20c:29ff:fe03::88 :::* 2809/krb5kdc
udp6 0 0 fe80::20c:29ff:fe03:123 :::* 2133/ntpd
udp6 0 0 ::1:123 :::* 2133/ntpd
udp6 0 0 :::123 :::* 2133/ntpd
Active UNIX domain sockets (only servers)
Proto RefCnt Flags Type State I-Node PID/Program name Path
unix 2 [ ACC ] STREAM LISTENING 5645 2191/slapd /var/run/slapd/ldapi
unix 2 [ ACC ] STREAM LISTENING 5431 2009/acpid /var/run/acpid.socket
unix 2 [ ACC ] STREAM LISTENING 5535 2106/php-cgi /var/run/lighttpd/php.socket-0
unix 2 [ ACC ] SEQPACKET LISTENING 3311 324/udevd /run/udev/control
答案1
文本
无法解析管理服务器的网络地址
表明您的 DNS 尚未完全配置。
您的网络上的 DNS 条目显示什么？即，您在内部网络上为 (kdc1.ixsystems.com) 和 (krb.ixsystems.com) 配置了哪些地址？（并且您在这台机器还是另一台机器上运行域名服务器）？
例如，谷歌的 DNS 显示 ixsystems.com 位于 64.71.187.9
此外，您的配置中第二个标题 [realms] 和 [domain_realm] 是不必要的。
答案2
我觉得你的 kadmin 工具无法找到它的管理服务器。你收到的 DNS 消息很可能是因为 kadmin 尝试通过 dns 服务记录查找其管理服务器，而目前尚未使用该服务记录
_kerberos-adm._tcp
This should list port 749 on your master KDC. Support for it is not complete at this time, but it will eventually be used by the kadmin program and related utilities. For now, you will also need the admin_server entry in krb5.conf.
由于您在 krb5.conf 中配置了管理服务器，因此您的 DNS 可能存在问题。
你的 /etc/hosts 包含
10.5.126.24:464 krb.ixsystems.com
据我所知，该端口符号是错误的，即使正确，您也需要端口 749 (tcp) 来运行 kadmin。
因此，删除 :464 并重试，
我强烈建议将 dns 服务器与 kerberos 一起使用，与设置 bind 或 dnsmasq 或 pdns 相比，保持 hosts 文件同步会遇到更多麻烦……