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SSSD、openLDAP、MIT Kerberos： "id username"はLDAPでエンティティを検出しませんが、ldapsearchは検出します

このチュートリアルに基づいて、openLDAP、MIT KerberosとSSDをDebian10システムにインストールしました 統合されたKerberos-Debianスクイーズ上のOpenLDAPプロバイダー 。
3つのコンポーネントはそれぞれ独自のProxmoxLXCコンテナにあります。
ldap：192.168.1.120（ldap2）
Kerberos：192.168.1.128（縁石）
SSDを搭載したクライアント：192.168.1.129（テスト）
IPはDNSによって解決できます。

問題：
「idusername」を呼び出しても結果が得られません。
しかし、同じフィルターを使用すると、ldapsearchで結果が得られます。

'id test05'の後にクライアントにログオンします（SSDログレベル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ホスト上の/ var/log/syslog（ログレベル256の3行のみ）

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=

ご覧のとおり、openLDAP検索はで呼び出されます
ベース：ou = users、dc = lan、dc = xxxxxxx、dc = net
フィルタ：

(&(uid=test05)(objectclass=posixAccount)(uid=*)(&(uidNumber=*)(!(uidNumber=0))))

OpenLDAPホストでこの検索を直接実行すると、次の結果が得られます。

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ホストの/ 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

私のSSSD設定

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

これは私のLDAP構成です

# 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}...

私はこの問題に2日間苦労しています。グーグルは助けにはならなかった。

誰かが私がこれを修正するのを手伝ってくれる？

openldapkerberossssd
1
user12682985

OlcAccessステートメントは厳密すぎて、sssdが使用するプリンシパルが表示したいデータを読み取ることができません。

問題のある行は次のとおりです。

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

あなたはおそらく次のようなものが欲しいでしょう：

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

これは、olcAuthzRegexp: {3}ステートメントが希望どおりに機能していることを前提としていますが、それについても確認します。 （kinit -kとldapwhoami -Yがその友達になります。）

to attrs=@posixAccount,@posixGroup by ...を使用してより具体的なolcAccessを作成することもできます。

1
84104

ご回答どうもありがとうございました。あなたは、絶対に正しい。
ログに認証エラーに関するメッセージがないため、認証エラーについては考えていませんでした。

OlcAccessステートメントをに変更すると

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

できます。

次に、あなたの提案に従って私の構成を変更し、すべてが大丈夫です。これが私が行った変更です：

  1. olcAuthzRegexpステートメントをに変更しました
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"

これらのホストエントリがuidエントリの前にあることは非常に重要です。それ以外の場合は、uidマッピングを使用してホストと一致します。

  1. olcAccessステートメントをに変更しました
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
  1. ホストの「テスト」をDITの新しい場所に追加しました
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
0
user12682985