我有幾個配置相同的 RHEL6 系統。我已經使用 CIFS 安裝多年了。然而，在過去的一個月裡，它在我的一個系統上停止工作，我似乎無法弄清楚為什麼。
（請參閱下面的配置）
我的金鑰表中有一個有效的主機主體。當我嘗試掛載 CIFS 掛載 ( /net/programs) 時，出現以下錯誤：
mount error(126): Required key not available
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)
該錯誤似乎與 cifs.upcall 有關，在比較調試日誌時，我注意到日誌中存在以下差異：
krb5_get_init_creds_keytab: -1765328203
handle_krb5_mech: getting service ticket for server0.domain0.local
cifs_krb5_get_req: unable to resolve (null) to ccache
handle_krb5_mech: failed to obtain service ticket (-1765328245)
錯誤 ( -1765328203) 似乎映射到KRB5_KT_NOTFOUND "Key table entry not found".
但是，權限看起來krb5.keytab正確並且與我的其他系統相符。klist -k顯示正確的密鑰（與我的其他系統相符）並且kinit -k成功。
另一個奇怪的行為。作為臨時解決方法，我可以使用我的用戶名掛載共享NTLMSSPI，但掛載僅在我的會話中可見。如果我使用新會話登錄，則不會出現掛載。/proc/mounts即使它在原始會話中出現，我什至都沒有看到它 。
我的系統都是核心版本2.6.32-696-23.1並且有Samba版本3.6.23-46。
配置：
SMB.CONF:
[global]
workgroup = DOMAIN0
password server = server0.DOMAIN0.LOCAL
realm = DOMAIN0.LOCAL
security = ads
idmap config * : backend
idmap config * : range = 300000-399999
idmap config DOMAIN0:backend = rid
idmap config DOMAIN0:range = 100000-199999
idmap config DOMAIN0:base_rid = 0
template shell = /bin/bash
winbind enum users = no
winbind enum groups = no
winbind separator = +
winbind use default domain = yes
winbind offline logon = false
kerberos method = secrets and keytab
client signing = mandatory
server signing = mandatory
NSSWITCH.CONF:
passwd: files winbind
shadow: files winbind
group: files winbind
hosts: files dns
SYSTEM-AUTH:
auth required pam_env.so
auth sufficient pam_fprintd.so
auth sufficient pam_unix.so try_first_pass
auth requisite pam_succeed_if.so uid >= 500 quiet
auth sufficient pam_winbind.so use_first_pass
auth [default=die] pam_faillock.so authfail deny=3 unlock_time=604800 fail_interval=900
auth required pam_faillock.so authsucc deny=3 unlock_time=604800 fail_interval=900
auth required pam_deny.so
account required pam_unix.so broken_shadow
account sufficient pam_localuser.so
account sufficient pam_succeed_if.so uid < 500 quiet
account [default=bad success=ok user_unknown=ignore] pam_winbind.so
account required pam_permit.so
password requisite pam_cracklib.so try_first_pass retry=3 minlen=14 lcredit=-1 ucredit=-1 dcredit=-1 ocredit=-1 difok=4 remember=24 maxrepeat=3
password sufficient pam_unix.so sha512 shadow try_first_pass use_authtok
password sufficient pam_winbind.so use_authtok
password required pam_deny.so
session optional pam_keyinit.so revoke
session required pam_limits.so
session required pam_lastlog.so showfailed
session optional pam_oddjob_mkhomedir.so
session [success=1 default=ignore] pam_succeed_if.so service in crond quiet use_uid
session required pam_unix.so
REQUEST-KEY.CONF
#OP TYPE DESCRIPTION CALLOUT INFO PROGRAM ARG1 ARG2 ARG3 ...
#====== ======= =============== =============== ===============================
create user debug:* negate /bin/keyctl negate %k 30 %S
create user debug:loop:* * |/bin/cat
create user debug:* * /usr/share/keyutils/request-key-debug.sh %k %d %c %S
negate * * * /bin/keyctl negate %k 30 %S
create cifs.spnego * * /usr/sbin/cifs.upcall %k
create cifs.idmap * * /usr/sbin/cifs.idmap %k
create dns_resolver * * /usr/sbin/cifs.upcall %k
KRB5.CONF
[libdefaults]
default_realm = DOMAIN0.LOCAL
dns_lookup_realm = false
dns_lookup_kdc = false
ticket_lifetime = 24h
renew_lifetime = 7d
forwardable = true
[realms]
DOMAIN0.LOCAL = {
kdc = server0.DOMAIN0.LOCAL
}
FSTAB:
//server0.domain0.local/Programs /net/programs cifs noauto,sec=krb5i,multiuser,cifsacl 0 0
RC.LOCAL
/sbin/ntpdate -u server0
/usr/bin/kinit -k
/bin/mount /net/programs
NTP.CONF
server server0.domain0.local iburst