Recentemente tive um problema com minha integração do AD em várias caixas do Debian. Eu uso SSSD e krb5 para permitir que o PAM sincronize e autentique usuários no Active Directory.
Isso funciona há mais de um ano, até que o administrador do AD alterou o UPN dos usuários do AD de [email protected] para [email protected] .
Agora, o reconhecimento de sincronização e nome de usuário ainda funciona, mas a autenticação falha de repente, pois parece que o nome enviado para krb5 é " [email protected] ". Este reino não é conhecido por krb5, por isso não autentica o usuário.
A alteração da região do arquivo krb5.conf para ABCCOMPANY não funciona, já que a região não é realmente alterada.
Eu posso usar kinit [email protected] sem problemas, isso me conecta muito bem. Eu não posso, no entanto, fazer kinit [email protected] , pois isso faz com que o krb5 reclame com a seguinte mensagem:
kinit: Cannot find KDC for realm "ABCCOMPANY.DK" while getting initial credentials
Isso faz sentido, eu acho. O SSSD envia ABCCOMPANY.DK no UPN junto ao krb5, mas o krb5 não está reconhecendo esse domínio porque não existe.
Então, a pergunta é: Como eu configuro o krb5 para reconhecer que o reino não é o mesmo que o UPN?
E uma questão bônus por pura curiosidade: essa prática (definir o UPN como algo além do nome do reino) é uma forma aceita de fazer as coisas? Parece estranho para mim ter um componente de domínio que não corresponda realmente a um domínio.
(Mon Jan 23 13:12:59 2017) [sssd[nss]] [sss_cmd_get_version] (0x0200): Received client version [1].
(Mon Jan 23 13:12:59 2017) [sssd[nss]] [sss_cmd_get_version] (0x0200): Offered version [1].
(Mon Jan 23 13:12:59 2017) [sssd[nss]] [sss_parse_name_for_domains] (0x0200): name 'mnn' matched without domain, user is mnn
(Mon Jan 23 13:12:59 2017) [sssd[nss]] [sss_parse_name_for_domains] (0x0200): using default domain [(null)]
(Mon Jan 23 13:12:59 2017) [sssd[nss]] [nss_cmd_getbynam] (0x0100): Requesting info for [mnn] from [<ALL>]
(Mon Jan 23 13:12:59 2017) [sssd[nss]] [nss_cmd_getpwnam_search] (0x0100): Requesting info for [[email protected]]
(Mon Jan 23 13:12:59 2017) [sssd[pam]] [sss_cmd_get_version] (0x0200): Received client version [3].
(Mon Jan 23 13:12:59 2017) [sssd[pam]] [sss_cmd_get_version] (0x0200): Offered version [3].
(Mon Jan 23 13:12:59 2017) [sssd[pam]] [pam_cmd_authenticate] (0x0100): entering pam_cmd_authenticate
(Mon Jan 23 13:12:59 2017) [sssd[pam]] [sss_parse_name_for_domains] (0x0200): name 'mnn' matched without domain, user is mnn
(Mon Jan 23 13:12:59 2017) [sssd[pam]] [sss_parse_name_for_domains] (0x0200): using default domain [(null)]
(Mon Jan 23 13:12:59 2017) [sssd[pam]] [pam_print_data] (0x0100): command: PAM_AUTHENTICATE
(Mon Jan 23 13:12:59 2017) [sssd[pam]] [pam_print_data] (0x0100): domain: not set
(Mon Jan 23 13:12:59 2017) [sssd[pam]] [pam_print_data] (0x0100): user: mnn
(Mon Jan 23 13:12:59 2017) [sssd[pam]] [pam_print_data] (0x0100): service: sshd
(Mon Jan 23 13:12:59 2017) [sssd[pam]] [pam_print_data] (0x0100): tty: ssh
(Mon Jan 23 13:12:59 2017) [sssd[pam]] [pam_print_data] (0x0100): ruser: not set
(Mon Jan 23 13:12:59 2017) [sssd[pam]] [pam_print_data] (0x0100): rhost: 172.16.112.155
(Mon Jan 23 13:12:59 2017) [sssd[pam]] [pam_print_data] (0x0100): authtok type: 1
(Mon Jan 23 13:12:59 2017) [sssd[pam]] [pam_print_data] (0x0100): newauthtok type: 0
(Mon Jan 23 13:12:59 2017) [sssd[pam]] [pam_print_data] (0x0100): priv: 1
(Mon Jan 23 13:12:59 2017) [sssd[pam]] [pam_print_data] (0x0100): cli_pid: 8724
(Mon Jan 23 13:12:59 2017) [sssd[be[company.dk]]] [be_get_account_info] (0x0100): Got request for [3][1][name=mnn]
(Mon Jan 23 13:12:59 2017) [sssd[be[company.dk]]] [sysdb_error_to_errno] (0x0020): LDB returned unexpected error: [No such attribute]
...
(Mon Jan 23 13:12:59 2017) [sssd[be[company.dk]]] [acctinfo_callback] (0x0100): Request processed. Returned 0,0,Success
(Mon Jan 23 13:12:59 2017) [sssd[pam]] [pam_check_user_search] (0x0100): Requesting info for [[email protected]]
(Mon Jan 23 13:12:59 2017) [sssd[pam]] [pam_dp_send_req] (0x0100): Sending request with the following data:
(Mon Jan 23 13:12:59 2017) [sssd[pam]] [pam_print_data] (0x0100): command: PAM_AUTHENTICATE
(Mon Jan 23 13:12:59 2017) [sssd[pam]] [pam_print_data] (0x0100): domain: company.dk
(Mon Jan 23 13:12:59 2017) [sssd[pam]] [pam_print_data] (0x0100): user: mnn
(Mon Jan 23 13:12:59 2017) [sssd[pam]] [pam_print_data] (0x0100): service: sshd
(Mon Jan 23 13:12:59 2017) [sssd[pam]] [pam_print_data] (0x0100): tty: ssh
(Mon Jan 23 13:12:59 2017) [sssd[pam]] [pam_print_data] (0x0100): ruser: not set
(Mon Jan 23 13:12:59 2017) [sssd[pam]] [pam_print_data] (0x0100): rhost: 172.16.112.155
(Mon Jan 23 13:12:59 2017) [sssd[pam]] [pam_print_data] (0x0100): authtok type: 1
(Mon Jan 23 13:12:59 2017) [sssd[pam]] [pam_print_data] (0x0100): newauthtok type: 0
(Mon Jan 23 13:12:59 2017) [sssd[pam]] [pam_print_data] (0x0100): priv: 1
(Mon Jan 23 13:12:59 2017) [sssd[pam]] [pam_print_data] (0x0100): cli_pid: 8724
(Mon Jan 23 13:12:59 2017) [sssd[pam]] [pam_dom_forwarder] (0x0100): pam_dp_send_req returned 0
(Mon Jan 23 13:12:59 2017) [sssd[be[company.dk]]] [be_pam_handler] (0x0100): Got request with the following data
(Mon Jan 23 13:12:59 2017) [sssd[be[company.dk]]] [pam_print_data] (0x0100): command: PAM_AUTHENTICATE
(Mon Jan 23 13:12:59 2017) [sssd[be[company.dk]]] [pam_print_data] (0x0100): domain: company.dk
(Mon Jan 23 13:12:59 2017) [sssd[be[company.dk]]] [pam_print_data] (0x0100): user: mnn
(Mon Jan 23 13:12:59 2017) [sssd[be[company.dk]]] [pam_print_data] (0x0100): service: sshd
(Mon Jan 23 13:12:59 2017) [sssd[be[company.dk]]] [pam_print_data] (0x0100): tty: ssh
(Mon Jan 23 13:12:59 2017) [sssd[be[company.dk]]] [pam_print_data] (0x0100): ruser:
(Mon Jan 23 13:12:59 2017) [sssd[be[company.dk]]] [pam_print_data] (0x0100): rhost: 172.16.112.155
(Mon Jan 23 13:12:59 2017) [sssd[be[company.dk]]] [pam_print_data] (0x0100): authtok type: 1
(Mon Jan 23 13:12:59 2017) [sssd[be[company.dk]]] [pam_print_data] (0x0100): newauthtok type: 0
(Mon Jan 23 13:12:59 2017) [sssd[be[company.dk]]] [pam_print_data] (0x0100): priv: 1
(Mon Jan 23 13:12:59 2017) [sssd[be[company.dk]]] [pam_print_data] (0x0100): cli_pid: 8724
(Mon Jan 23 13:12:59 2017) [sssd[be[company.dk]]] [krb5_auth_send] (0x0100): Home directory for user [mnn] not known.
(Mon Jan 23 13:12:59 2017) [sssd[be[company.dk]]] [krb5_auth_send] (0x0200): Ignoring ccache attribute [FILE:/tmp/krb5cc_876027530_rTTlt3], because it doesn'texist.
(Mon Jan 23 13:12:59 2017) [sssd[be[company.dk]]] [fo_resolve_service_send] (0x0100): Trying to resolve service 'KERBEROS'
(Mon Jan 23 13:12:59 2017) [sssd[be[company.dk]]] [resolve_srv_send] (0x0200): The status of SRV lookup is neutral
(Mon Jan 23 13:12:59 2017) [sssd[be[company.dk]]] [resolv_getsrv_send] (0x0100): Trying to resolve SRV record of '_KERBEROS._udp.company.dk'
(Mon Jan 23 13:12:59 2017) [sssd[be[company.dk]]] [set_srv_data_status] (0x0100): Marking SRV lookup of service 'KERBEROS' as 'resolved'
(Mon Jan 23 13:12:59 2017) [sssd[be[company.dk]]] [resolv_gethostbyname_files_send] (0x0100): Trying to resolve A record of 'ad2.company.dk' in files
(Mon Jan 23 13:12:59 2017) [sssd[be[company.dk]]] [set_server_common_status] (0x0100): Marking server 'ad2.company.dk' as 'resolving name'
(Mon Jan 23 13:12:59 2017) [sssd[be[company.dk]]] [resolv_gethostbyname_files_send] (0x0100): Trying to resolve AAAA record of 'ad2.company.dk' in files
(Mon Jan 23 13:12:59 2017) [sssd[be[company.dk]]] [resolv_gethostbyname_next] (0x0200): No more address families to retry
(Mon Jan 23 13:12:59 2017) [sssd[be[company.dk]]] [resolv_gethostbyname_dns_query] (0x0100): Trying to resolve A record of 'ad2.company.dk' in DNS
(Mon Jan 23 13:12:59 2017) [sssd[be[company.dk]]] [set_server_common_status] (0x0100): Marking server 'ad2.company.dk' as 'name resolved'
(Mon Jan 23 13:12:59 2017) [sssd[be[company.dk]]] [be_resolve_server_process] (0x0200): Found address for server ad2.company.dk: [xxx.xx.x.xx] TTL 3600
(Mon Jan 23 13:12:59 2017) [sssd[be[company.dk]]] [fo_resolve_service_send] (0x0100): Trying to resolve service 'KPASSWD'
(Mon Jan 23 13:12:59 2017) [sssd[be[company.dk]]] [resolve_srv_send] (0x0200): The status of SRV lookup is neutral
(Mon Jan 23 13:12:59 2017) [sssd[be[company.dk]]] [resolv_getsrv_send] (0x0100): Trying to resolve SRV record of '_KPASSWD._udp.company.dk'
(Mon Jan 23 13:12:59 2017) [sssd[be[company.dk]]] [set_srv_data_status] (0x0100): Marking SRV lookup of service 'KPASSWD' as 'resolved'
(Mon Jan 23 13:12:59 2017) [sssd[be[company.dk]]] [be_resolve_server_process] (0x0200): Found address for server ad2.company.dk: [xxx.xx.x.xx] TTL 3600
(Mon Jan 23 13:13:00 2017) [sssd] [service_send_ping] (0x0100): Pinging company.dk
(Mon Jan 23 13:13:00 2017) [sssd] [service_send_ping] (0x0100): Pinging nss
(Mon Jan 23 13:13:00 2017) [sssd] [service_send_ping] (0x0100): Pinging pam
(Mon Jan 23 13:13:00 2017) [sssd] [ping_check] (0x0100): Service pam replied to ping
(Mon Jan 23 13:13:00 2017) [sssd] [ping_check] (0x0100): Service nss replied to ping
(Mon Jan 23 13:13:00 2017) [sssd[be[company.dk]]] [become_user] (0x0200): Trying to become user [876027530][876000513].
(Mon Jan 23 13:13:00 2017) [sssd] [ping_check] (0x0100): Service company.dk replied to ping
(Mon Jan 23 13:13:00 2017) [[sssd[krb5_child[8727]]]] [unpack_buffer] (0x0100): cmd [241] uid [876027530] gid [876000513] validate [false] enterprise principal [false] offline [false] UPN [[email protected]]
(Mon Jan 23 13:13:00 2017) [[sssd[krb5_child[8727]]]] [unpack_buffer] (0x0100): ccname: [FILE:/tmp/krb5cc_876027530_XXXXXX] keytab: [/etc/krb5.keytab]
(Mon Jan 23 13:13:00 2017) [[sssd[krb5_child[8727]]]] [set_lifetime_options] (0x0100): Cannot read [SSSD_KRB5_RENEWABLE_LIFETIME] from environment.
(Mon Jan 23 13:13:00 2017) [[sssd[krb5_child[8727]]]] [set_lifetime_options] (0x0100): Cannot read [SSSD_KRB5_LIFETIME] from environment.
(Mon Jan 23 13:13:00 2017) [[sssd[krb5_child[8727]]]] [set_canonicalize_option] (0x0100): SSSD_KRB5_CANONICALIZE is set to [false]
(Mon Jan 23 13:13:00 2017) [[sssd[krb5_child[8727]]]] [k5c_setup] (0x0100): Not using FAST.
(Mon Jan 23 13:13:00 2017) [[sssd[krb5_child[8727]]]] [get_and_save_tgt] (0x0020): 981: [-1765328230][Cannot find KDC for realm "ABCCOMPANY.DK"]
(Mon Jan 23 13:13:00 2017) [[sssd[krb5_child[8727]]]] [map_krb5_error] (0x0020): 1043: [-1765328230][Cannot find KDC for realm "ABCCOMPANY.DK"]
(Mon Jan 23 13:13:00 2017) [[sssd[krb5_child[8727]]]] [k5c_send_data] (0x0200): Received error code 1432158209
(Mon Jan 23 13:13:00 2017) [sssd[be[company.dk]]] [child_sig_handler] (0x0100): child [8727] finished successfully.
(Mon Jan 23 13:13:00 2017) [sssd[be[company.dk]]] [be_pam_handler_callback] (0x0100): Backend returned: (0, 4, <NULL>) [Success]
(Mon Jan 23 13:13:00 2017) [sssd[be[company.dk]]] [be_pam_handler_callback] (0x0100): Sending result [4][company.dk]
(Mon Jan 23 13:13:00 2017) [sssd[pam]] [pam_dp_process_reply] (0x0100): received: [4][company.dk]
(Mon Jan 23 13:13:00 2017) [sssd[pam]] [pam_reply] (0x0200): pam_reply called with result [4].
(Mon Jan 23 13:13:00 2017) [sssd[pam]] [pam_reply] (0x0200): blen: 29
(Mon Jan 23 13:13:00 2017) [sssd[be[company.dk]]] [be_pam_handler_callback] (0x0100): Sent result [4][company.dk]
(Mon Jan 23 13:13:02 2017) [sssd[nss]] [client_recv] (0x0200): Client disconnected!
(Mon Jan 23 13:13:02 2017) [sssd[pam]] [client_recv] (0x0200): Client disconnected!
(Mon Jan 23 13:13:04 2017) [sssd] [monitor_quit_signal] (0x0040): Monitor received Interrupt: terminating children
(Mon Jan 23 13:13:04 2017) [sssd] [monitor_quit] (0x0040): Returned with: 0
(Mon Jan 23 13:13:04 2017) [sssd] [monitor_quit] (0x0020): Terminating [pam][8719]
(Mon Jan 23 13:13:04 2017) [sssd[be[company.dk]]] [sbus_dispatch] (0x0080): Connection is not open for dispatching.
(Mon Jan 23 13:13:04 2017) [sssd] [monitor_quit] (0x0020): Child [pam] exited gracefully
(Mon Jan 23 13:13:04 2017) [sssd] [monitor_quit] (0x0020): Terminating [nss][8718]
(Mon Jan 23 13:13:04 2017) [sssd] [monitor_quit] (0x0020): Child [nss] exited gracefully
(Mon Jan 23 13:13:04 2017) [sssd] [monitor_quit] (0x0020): Terminating [company.dk][8717]
(Mon Jan 23 13:13:04 2017) [sssd] [monitor_quit] (0x0020): Child [company.dk] terminated with a signal