我已經根據本教學在 Debian 10 系統上安裝了 openLDAP、MIT Kerberos 和 SSDDebian scrape 上整合的 Kerberos-OpenLDAP 提供者。
三個組件均位於其自己的 Proxmox LXC 容器上。
ldap：192.168.1.120 (ldap2)
Kerberos：192.168.1.128 (kerb)
帶 SSD 的客戶端：192.168.1.129（測試）
IP 可以透過 DNS 解析。
問題：
當我呼叫“id username”時，我沒有得到任何結果。
但使用相同的過濾器，我得到了 ldapsearch 的結果。
在「id test05」之後登入客戶端（SSD 日誌等級 6）
==> /var/log/sssd/sssd_nss.log <==
(Thu Jan 16 16:03:48 2020) [sssd[nss]] [accept_fd_handler] (0x0400): Client connected!
(Thu Jan 16 16:03:48 2020) [sssd[nss]] [sss_cmd_get_version] (0x0200): Received client version [1].
(Thu Jan 16 16:03:48 2020) [sssd[nss]] [sss_cmd_get_version] (0x0200): Offered version [1].
(Thu Jan 16 16:03:48 2020) [sssd[nss]] [nss_getby_name] (0x0400): Input name: test05
(Thu Jan 16 16:03:48 2020) [sssd[nss]] [cache_req_send] (0x0400): CR #1: New request 'User by name'
(Thu Jan 16 16:03:48 2020) [sssd[nss]] [cache_req_process_input] (0x0400): CR #1: Parsing input name [test05]
(Thu Jan 16 16:03:48 2020) [sssd[nss]] [sss_parse_name_for_domains] (0x0200): name 'test05' matched without domain, user is test05
(Thu Jan 16 16:03:48 2020) [sssd[nss]] [cache_req_set_name] (0x0400): CR #1: Setting name [test05]
(Thu Jan 16 16:03:48 2020) [sssd[nss]] [cache_req_select_domains] (0x0400): CR #1: Performing a multi-domain search
(Thu Jan 16 16:03:48 2020) [sssd[nss]] [cache_req_search_domains] (0x0400): CR #1: Search will check the cache and check the data provider
(Thu Jan 16 16:03:48 2020) [sssd[nss]] [cache_req_set_domain] (0x0400): CR #1: Using domain [xxxxxxx.net]
(Thu Jan 16 16:03:48 2020) [sssd[nss]] [cache_req_prepare_domain_data] (0x0400): CR #1: Preparing input data for domain [xxxxxxx.net] rules
(Thu Jan 16 16:03:48 2020) [sssd[nss]] [cache_req_search_send] (0x0400): CR #1: Looking up [email protected]
(Thu Jan 16 16:03:48 2020) [sssd[nss]] [cache_req_search_ncache] (0x0400): CR #1: Checking negative cache for [[email protected]]
(Thu Jan 16 16:03:48 2020) [sssd[nss]] [cache_req_search_ncache] (0x0400): CR #1: [[email protected]] is not present in negative cache
(Thu Jan 16 16:03:48 2020) [sssd[nss]] [cache_req_search_cache] (0x0400): CR #1: Looking up [[email protected]] in cache
(Thu Jan 16 16:03:48 2020) [sssd[nss]] [cache_req_search_cache] (0x0400): CR #1: Object [[email protected]] was not found in cache
(Thu Jan 16 16:03:48 2020) [sssd[nss]] [cache_req_search_dp] (0x0400): CR #1: Looking up [[email protected]] in data provider
(Thu Jan 16 16:03:48 2020) [sssd[nss]] [sss_dp_issue_request] (0x0400): Issuing request for [0x55bd0978aee0:1:[email protected]@xxxxxxx.net]
(Thu Jan 16 16:03:48 2020) [sssd[nss]] [sss_dp_get_account_msg] (0x0400): Creating request for [xxxxxxx.net][0x1][BE_REQ_USER][[email protected]:-]
(Thu Jan 16 16:03:48 2020) [sssd[nss]] [sss_dp_internal_get_send] (0x0400): Entering request [0x55bd0978aee0:1:[email protected]@xxxxxxx.net]
==> /var/log/sssd/sssd_xxxxxxx.net.log <==
(Thu Jan 16 16:03:48 2020) [sssd[be[xxxxxxx.net]]] [dp_get_account_info_handler] (0x0200): Got request for [0x1][BE_REQ_USER][[email protected]]
(Thu Jan 16 16:03:48 2020) [sssd[be[xxxxxxx.net]]] [dp_attach_req] (0x0400): DP Request [Account #3]: New request. Flags [0x0001].
(Thu Jan 16 16:03:48 2020) [sssd[be[xxxxxxx.net]]] [dp_attach_req] (0x0400): Number of active DP request: 1
(Thu Jan 16 16:03:48 2020) [sssd[be[xxxxxxx.net]]] [sdap_search_user_next_base] (0x0400): Searching for users with base [ou=users,dc=lan,dc=xxxxxxx,dc=net]
(Thu Jan 16 16:03:48 2020) [sssd[be[xxxxxxx.net]]] [sdap_get_generic_ext_step] (0x0400): calling ldap_search_ext with [(&(uid=test05)(objectclass=posixAccount)(uid=*)(&(uidNumber=*)(!(uidNumber=0))))][ou=users,dc=lan,dc=xxxxxxx,dc=net].
(Thu Jan 16 16:03:48 2020) [sssd[be[xxxxxxx.net]]] [sdap_get_generic_op_finished] (0x0400): Search result: No such object(32), no errmsg set
(Thu Jan 16 16:03:48 2020) [sssd[be[xxxxxxx.net]]] [sdap_search_user_process] (0x0400): Search for users, returned 0 results.
(Thu Jan 16 16:03:48 2020) [sssd[be[xxxxxxx.net]]] [sysdb_search_by_name] (0x0400): No such entry
(Thu Jan 16 16:03:48 2020) [sssd[be[xxxxxxx.net]]] [sysdb_delete_user] (0x0400): Error: 2 (No such file or directory)
(Thu Jan 16 16:03:48 2020) [sssd[be[xxxxxxx.net]]] [dp_req_done] (0x0400): DP Request [Account #3]: Request handler finished [0]: Success
(Thu Jan 16 16:03:48 2020) [sssd[be[xxxxxxx.net]]] [_dp_req_recv] (0x0400): DP Request [Account #3]: Receiving request data.
(Thu Jan 16 16:03:48 2020) [sssd[be[xxxxxxx.net]]] [dp_req_reply_list_success] (0x0400): DP Request [Account #3]: Finished. Success.
(Thu Jan 16 16:03:48 2020) [sssd[be[xxxxxxx.net]]] [dp_table_value_destructor] (0x0400): Removing [0:1:0x0001:1::xxxxxxx.net:[email protected]] from reply table
(Thu Jan 16 16:03:48 2020) [sssd[be[xxxxxxx.net]]] [dp_req_destructor] (0x0400): DP Request [Account #3]: Request removed.
(Thu Jan 16 16:03:48 2020) [sssd[be[xxxxxxx.net]]] [dp_req_destructor] (0x0400): Number of active DP request: 0
==> /var/log/sssd/sssd_nss.log <==
(Thu Jan 16 16:03:48 2020) [sssd[nss]] [cache_req_search_cache] (0x0400): CR #1: Looking up [[email protected]] in cache
(Thu Jan 16 16:03:48 2020) [sssd[nss]] [cache_req_search_cache] (0x0400): CR #1: Object [[email protected]] was not found in cache
(Thu Jan 16 16:03:48 2020) [sssd[nss]] [cache_req_search_ncache_add_to_domain] (0x0400): CR #1: Adding [[email protected]] to negative cache
(Thu Jan 16 16:03:48 2020) [sssd[nss]] [sss_ncache_set_str] (0x0400): Adding [NCE/USER/xxxxxxx.net/[email protected]] to negative cache
(Thu Jan 16 16:03:48 2020) [sssd[nss]] [cache_req_process_result] (0x0400): CR #1: Finished: Not found
(Thu Jan 16 16:03:48 2020) [sssd[nss]] [sss_dp_req_destructor] (0x0400): Deleting request: [0x55bd0978aee0:1:[email protected]@xxxxxxx.net]
(Thu Jan 16 16:03:48 2020) [sssd[nss]] [client_recv] (0x0200): Client disconnected!
ldap2 主機上的 /var/log/syslog （只有 3 行日誌等級為 256）
Jan 16 16:03:48 ldap2 slapd[238]: conn=1067 op=6 SRCH base="ou=users,dc=lan,dc=xxxxxxx,dc=net" scope=2 deref=0 filter="(&(uid=test05)(objectClass=posixAccount)(uid=*)(&(uidNumber=*)(!(uidNumber=0))))"
Jan 16 16:03:48 ldap2 slapd[238]: conn=1067 op=6 SRCH attr=objectClass uid userPassword uidNumber gidNumber gecos homeDirectory loginShell krbPrincipalName cn modifyTimestamp modifyTimestamp shadowLastChange shadowMin shadowMax shadowWarning shadowInactive shadowExpire shadowFlag krbLastPwdChange krbPasswordExpiration pwdAttribute authorizedService accountExpires userAccountControl nsAccountLock host rhost loginDisabled loginExpirationTime loginAllowedTimeMap sshPublicKey userCertificate;binary mail
Jan 16 16:03:48 ldap2 slapd[238]: conn=1067 op=6 SEARCH RESULT tag=101 err=32 nentries=0 text=
如您所看到的，openLDAP 搜尋是使用
base: ou=users,dc=lan,dc=xxxxxxx,dc=net
過濾器呼叫的：
(&(uid=test05)(objectclass=posixAccount)(uid=*)(&(uidNumber=*)(!(uidNumber=0))))
當我直接在 openLDAP 主機上執行此搜尋時，我得到結果：
ldapsearch -Y GSSAPI -b ou=users,dc=lan,dc=xxxxxxx,dc=net "(&(uid=test05)(objectclass=posixAccount)(uid=*)(&(uidNumber=*)(!(uidNumber=0))))" cn uid
SASL/GSSAPI authentication started
SASL username: [email protected]
SASL SSF: 256
SASL data security layer installed.
# extended LDIF
#
# LDAPv3
# base <ou=users,dc=lan,dc=xxxxxxx,dc=net> with scope subtree
# filter: (&(uid=test05)(objectclass=posixAccount)(uid=*)(&(uidNumber=*)(!(uidNumber=0))))
# requesting: cn uid
#
.
# test05, users, lan.xxxxxxx.net
dn: uid=test05,ou=users,dc=lan,dc=xxxxxxx,dc=net
cn: test05
uid: test05
ldap2 主機上的 /var/log/syslog
Jan 16 16:19:08 ldap2 slapd[238]: conn=1068 fd=24 ACCEPT from IP=[::1]:37252 (IP=[::]:389)
Jan 16 16:19:08 ldap2 slapd[238]: conn=1068 op=0 BIND dn="" method=163
Jan 16 16:19:08 ldap2 slapd[238]: conn=1068 op=0 RESULT tag=97 err=14 text=SASL(0): successful result:
Jan 16 16:19:08 ldap2 slapd[238]: conn=1068 op=1 BIND dn="" method=163
Jan 16 16:19:08 ldap2 slapd[238]: conn=1068 op=1 RESULT tag=97 err=14 text=SASL(0): successful result:
Jan 16 16:19:08 ldap2 slapd[238]: conn=1068 op=2 BIND dn="" method=163
Jan 16 16:19:08 ldap2 slapd[238]: conn=1068 op=2 BIND authcid="[email protected]" authzid="[email protected]"
Jan 16 16:19:08 ldap2 slapd[238]: conn=1068 op=2 BIND dn="cn=admin,dc=lan,dc=xxxxxxx,dc=net" mech=GSSAPI sasl_ssf=256 ssf=256
Jan 16 16:19:08 ldap2 slapd[238]: conn=1068 op=2 RESULT tag=97 err=0 text=
Jan 16 16:19:08 ldap2 slapd[238]: conn=1068 op=3 SRCH base="ou=users,dc=lan,dc=xxxxxxx,dc=net" scope=2 deref=0 filter="(&(uid=test05)(objectClass=posixAccount)(uid=*)(&(uidNumber=*)(!(uidNumber=0))))"
Jan 16 16:19:08 ldap2 slapd[238]: conn=1068 op=3 SRCH attr=cn uid
Jan 16 16:19:08 ldap2 slapd[238]: conn=1068 op=3 SEARCH RESULT tag=101 err=0 nentries=1 text=
Jan 16 16:19:08 ldap2 slapd[238]: conn=1068 op=4 UNBIND
Jan 16 16:19:08 ldap2 slapd[238]: conn=1068 fd=24 closed
Jan 16 16:19:30 ldap2 slapd[238]: conn=1069 fd=24 ACCEPT from IP=[::1]:37254 (IP=[::]:389)
Jan 16 16:19:30 ldap2 slapd[238]: conn=1069 op=0 BIND dn="" method=163
Jan 16 16:19:30 ldap2 slapd[238]: conn=1069 op=0 RESULT tag=97 err=14 text=SASL(0): successful result:
Jan 16 16:19:30 ldap2 slapd[238]: conn=1069 op=1 BIND dn="" method=163
Jan 16 16:19:30 ldap2 slapd[238]: conn=1069 op=1 RESULT tag=97 err=14 text=SASL(0): successful result:
Jan 16 16:19:30 ldap2 slapd[238]: conn=1069 op=2 BIND dn="" method=163
Jan 16 16:19:30 ldap2 slapd[238]: conn=1069 op=2 BIND authcid="[email protected]" authzid="[email protected]"
Jan 16 16:19:30 ldap2 slapd[238]: conn=1069 op=2 BIND dn="cn=admin,dc=lan,dc=xxxxxxx,dc=net" mech=GSSAPI sasl_ssf=256 ssf=256
Jan 16 16:19:30 ldap2 slapd[238]: conn=1069 op=2 RESULT tag=97 err=0 text=
Jan 16 16:19:30 ldap2 slapd[238]: conn=1069 op=3 SRCH base="ou=users,dc=lan,dc=xxxxxxx,dc=net" scope=2 deref=0 filter="(&(uid=test05)(objectClass=posixAccount)(uid=*)(&(uidNumber=*)(!(uidNumber=0))))"
Jan 16 16:19:30 ldap2 slapd[238]: conn=1069 op=3 SRCH attr=cn uid
Jan 16 16:19:30 ldap2 slapd[238]: conn=1069 op=3 SEARCH RESULT tag=101 err=0 nentries=1 text=
Jan 16 16:19:30 ldap2 slapd[238]: conn=1069 op=4 UNBIND
Jan 16 16:19:30 ldap2 slapd[238]: conn=1069 fd=24 closed
我的 SSSD 配置
cat /etc/sssd/sssd.conf
[sssd]
config_file_version = 2
services = nss, pam
domains = xxxxxxx.net
[nss]
debug_level = 6
override_shell = /bin/bash
filter_users = root
filter_groups = root
[pam]
offline_credentials_expiration = 60
[domain/xxxxxxx.net]
# A domain with identities provided by LDAP and authentication by Kerberos
debug_level = 6
cache_credentials = true
# -- Authentication provider --
auth_provider = krb5
krb5_server = kerb.xxxxxxx.net
krb5_realm = XXXXXXX.NET
krb5_ccachedir = /tmp
# -- Access provider --
access_provider = permit
# -- Change Password provider --
chpass_provider = krb5
# -- Identity provider --
id_provider = ldap
ldap_uri = ldap://ldap2.xxxxxxx.net
ldap_search_base = dc=lan,dc=xxxxxxx,dc=net
ldap_user_search_base = ou=users,dc=lan,dc=xxxxxxx,dc=net
ldap_sasl_mech = GSSAPI
ldap_sasl_authid = host/test.xxxxxxx.net
ldap_krb5_keytab = /etc/ldap/ldap.keytab
ldap_krb5_init_creds = true
# -- SUDO provider --
sudo_provider = none
這是我的 LDAP 配置
# config
dn: cn=config
objectClass: olcGlobal
cn: config
olcArgsFile: /var/run/slapd/slapd.args
olcAuthzRegexp: {0}"uid=ldapadm,cn=XXXXXXX.NET,cn=gssapi,cn=auth" "cn=admin,
dc=lan,dc=xxxxxxx,dc=net"
olcAuthzRegexp: {1}"uid=([^,]+),cn=gssapi,cn=auth" "uid=$1,ou=users,dc=lan,dc=
xxxxxxx,dc=net"
olcAuthzRegexp: {2}"uid=([^,]+),cn=XXXXXXX.NET,cn=gssapi,cn=auth" "uid=$1,ou
=users,dc=lan,dc=xxxxxxx,dc=net"
olcAuthzRegexp: {3}"uid=host/([^,]+).XXXXXXX.NET,cn=xxxxxxx.net,cn=gssapi,
cn=auth" "cn=$1,ou=hosts,dc=lan,dc=xxxxxxx,dc=net"
olcDisallows: bind_anon
olcLogLevel: 256
olcPidFile: /var/run/slapd/slapd.pid
olcRequires: authc
olcSaslHost: ldap2.xxxxxxx.net
olcSaslRealm: XXXXXXX.NET
olcTLSCACertificateFile: /etc/ssl/openldap/certs/ca-chain-cert.pem
olcTLSCertificateFile: /etc/ssl/openldap/certs/ldap2-server-cert.pem
olcTLSCertificateKeyFile: /etc/ssl/openldap/private/ldap2-server-key.pem
olcTLSProtocolMin: 3.1
olcToolThreads: 1
# {0}config, config
dn: olcDatabase={0}config,cn=config
objectClass: olcDatabaseConfig
olcDatabase: {0}config
olcAccess: {0}to * by dn.exact=gidNumber=0+uidNumber=0,cn=peercred,cn=external
,cn=auth manage by * break
olcRootDN: cn=admin,cn=config
# {1}mdb, config
dn: olcDatabase={1}mdb,cn=config
objectClass: olcDatabaseConfig
objectClass: olcMdbConfig
olcDatabase: {1}mdb
olcDbDirectory: /var/lib/ldap
olcSuffix: dc=lan,dc=xxxxxxx,dc=net
olcAccess: {0}to attrs=userPassword,shadowLastChange by dn="cn=admin,dc=lan,dc
=xxxxxxx,dc=net" write by dn="cn=sssdman,ou=manager,dc=lan,dc=xxxxxxx,dc=
net" read by dn="cn=mailman,ou=vmail,ou=services,dc=lan,dc=xxxxxxx,dc=net"
read by self write by anonymous auth by * none
olcAccess: {1}to dn.base="" by * read
olcAccess: {2}to dn.subtree="ou=vmail,ou=services,dc=lan,dc=xxxxxxx,dc=net"
by dn="cn=admin,dc=lan,dc=xxxxxxx,dc=net" write by dn="cn=mailman,ou=vmail,
ou=services,dc=lan,dc=xxxxxxx,dc=net" read by self write by anonymous auth
by * none
olcAccess: {3}to dn.subtree="cn=krb5,ou=services,dc=lan,dc=xxxxxxx,dc=net" b
y dn="cn=admin,dc=lan,dc=xxxxxxx,dc=net" write by dn="cn=adm-srv,cn=krb5,ou
=services,dc=lan,dc=xxxxxxx,dc=net" write by dn="cn=kdc-srv,cn=krb5,ou=serv
ices,dc=lan,dc=xxxxxxx,dc=net" read by * none
olcAccess: {4}to * by dn="cn=admin,dc=lan,dc=xxxxxxx,dc=net" write by dn="cn
=sssdman,ou=manager,dc=lan,dc=xxxxxxx,dc=net" read by self write by anonymo
us auth by * none
olcLastMod: TRUE
olcRootDN: cn=admin,dc=lan,dc=xxxxxxx,dc=net
olcRootPW: {SSHA}...
我已經為這個問題苦苦掙扎了兩天。谷歌沒有幫助。
有人能幫我解決這個問題嗎？
答案1
您的 olcAccess 語句過於嚴格，不允許 sssd 使用的主體讀取您希望其查看的資料。
有問題的行是：
olcAccess: {4}to *
by dn="cn=admin,dc=lan,dc=xxxxxxx,dc=net" write
by dn="cn=sssdman,ou=manager,dc=lan,dc=xxxxxxx,dc=net" read
by self write
by anonymous auth
by * none
你可能想要這樣的東西：
olcAccess: {4}to *
by dn="cn=admin,dc=lan,dc=xxxxxxx,dc=net" write
by dn="cn=sssdman,ou=manager,dc=lan,dc=xxxxxxx,dc=net" read
by dn.one="ou=hosts,dc=lan,dc=xxxxxxx,dc=net"
by self write
by anonymous auth
by * none
這假設您的olcAuthzRegexp: {3}聲明按您想要的方式工作，但我也會檢查以確保這一點。 （kinit -k因此ldapwhoami -Y將成為你的朋友。）
您也可以使用 製作更具體的 olcAccess to attrs=@posixAccount,@posixGroup by ...。
答案2
非常感謝您的回答。你是絕對正確的。
我沒有考慮身份驗證錯誤，因為日誌中沒有有關該錯誤的訊息。
當我將 olcAccess 語句更改為
olcAccess: {4}to *
by dn="cn=admin,dc=lan,dc=xxxxxxx,dc=net" write
by dn="cn=sssdman,ou=manager,dc=lan,dc=xxxxxxx,dc=net" read
by self write
by anonymous auth
by * read <--- this works, but it is not what I want
有用。
然後根據你的建議更改了我的配置，一切正常。以下是我所做的更改：
- 將 olcAuthzRegexp 語句改為
dn: cn=config
add: olcAuthzRegexp
olcAuthzRegexp: "uid=host/([^,]+).xxxxxxx.net,cn=gssapi,cn=auth" "cn=$1,ou=hosts,ou=sssd,ou=services,dc=lan,dc=xxxxxxx,dc=net"
dn: cn=config
add: olcAuthzRegexp
olcAuthzRegexp: "uid=host/([^,]+).xxxxxxx.net,cn=XXXXXXX.NET,cn=gssapi,cn=auth" "cn=$1,ou=hosts,ou=sssd,ou=services,dc=lan,dc=xxxxxxx,dc=net"
這是很重要這些主機條目位於 uid 條目之前。否則，您將獲得具有 uid 映射的主機的匹配項。
- 將 olcAccess 語句改為
olcAccess: {4}to *
by dn="cn=admin,dc=lan,dc=xxxxxxx,dc=net" write
by dn="cn=sssdman,ou=manager,dc=lan,dc=xxxxxxx,dc=net" read
by dn.one="ou=hosts,ou=sssd,ou=services,dc=lan,dc=xxxxxxx,dc=net" read
by self write
by anonymous auth
by * none
- 將主機“test”新增至 DIT 中的新位置
dn: cn=test,ou=hosts,ou=sssd,ou=services,dc=lan,dc=xxxxxxx,dc=net
cn: test
objectclass: device
objectclass: hostObject
objectclass: authorizedServiceObject
objectclass: top
authorizedService: host
host: test.nottebrok.net
description: Test Host