sssd-users October 2018

sssd-users@lists.fedorahosted.org

20 participants
22 discussions

sssd performance on large domains
by zfnoctis＠gmail.com 03 Feb '22

03 Feb '22

Hi, I'm wondering if there are any plans to improve sssd performance on large active directory domains (100k+ users, 40k+ groups), or if there are settings I am not aware of that can greatly improve performance, specifically for workstation use cases. Currently if I do not set "ignore_group_members = True" in sssd.conf, logins can take upwards of 6 minutes and "sssd_be" will max the CPU for up to 20 minutes after logon, which makes it a non-starter. The reason I want to allow group members to be seen is that I want certain domain groups to be able to perform elevated actions using polkit. If I ignore group members, polkit reports that the group is empty and so no one can elevate in the graphical environment. Ultimately this means that Linux workstations are at a severe disadvantage since they cannot be bound to the domain and have the normal set of access features users and IT expect from macOS or Windows. Distributions used: Ubuntu 16.04 (sssd 1.13.4-1ubuntu1.1), Ubuntu 16.10 (sssd 1.13.4-3) and Fedora 24 (sssd-1.13.4-3.fc24). All exhibit the same problems. I've also tried "ldap_group_nesting_level = 1" without seeing any noticeable improvement with respect to performance. Putting the database on /tmp isn't viable as these are workstations that will reboot semi-frequently, and I don't believe this is an I/O bound performance issue anyways. Thanks for your time.

6 29

ID Views for IPA ID Views for AD users inconsistent resolution
by Louis Abel 01 Aug '21

01 Aug '21

I didn't get a response in #sssd, so I figured I'll try here at the mail list. # rpm -q sssd ipa-server sssd-1.16.0-19.el7_5.5.x86_64 ipa-server-4.5.4-10.el7_5.3.x86_64 I've been scratching my head trying to resolve this particular issue. I'm having issues with AD users where when they login, they'll get the UID/GID assigned in the ID views correctly, but only some of the time. Other times, they won't get the id view assigned to them. This is all done in the default trust view. What makes this issue even more interesting is that out of my 6 domain controllers, sometimes it'll be one server out of the six that does it, sometimes it's two. But it's never the same ones, so it's difficult to track the particular issue down. What's even more interesting is this is not occurring with some users (like my own). I have yet to see it occur with my account or even the rest of my team's accounts. One of the things I tried to do is delete the ID views of the offending users and recreate them to no avail. I put SSSD into debug mode on the IPA servers and tried to get some relevant logs and such to try and figure this out. Below is my SSSD configuration, ldb info, and debug logs (removing private information where possible). I'm trying to determine if this is either a bug within SSSD or if this is a misconfiguration on my part. $ ldbsearch -H cache_ipa.example.com.ldb name=user.name(a)ad.example.com originalADuidNumber uidNumber originalADgidNumber gidNumber asq: Unable to register control with rootdse! # record 1 dn: name=user.name(a)ad.example.com,cn=users,cn=ad.example.com,cn=sysdb originalADuidNumber: 55616902 originalADgidNumber: 55616902 uidNumber: 55616902 gidNumber: 55616902 $ ipa idoverrideuser-show "Default Trust View" user.name(a)ad.example.com Anchor to override: user.name(a)ad.example.com UID: 40001 GID: 40001 Home directory: /home/user.name Login shell: /bin/bash $ ldbsearch -H timestamps_ipa.example.com.ldb | less dn: name=user.name(a)ad.example.com,cn=users,cn=ad.example.com,cn=sysdb objectCategory: user originalModifyTimestamp: 20180823172515.0Z entryUSN: 92632390 initgrExpireTimestamp: 1535133621 lastUpdate: 1535128235 dataExpireTimestamp: 1535133635 distinguishedName: name=user.name(a)ad.example.com,cn=users,cn=ad.example.com,cn=sysdb ## DEBUG LOGS (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sysdb_set_entry_attr] (0x0200): Entry [name=user.name(a)ad.example.com,cn=users,cn=ad.example.com,cn=sysdb] has set [ts_cache] attrs. (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ldb] (0x4000): commit ldb transaction (nesting: 0) (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sdap_id_op_connect_step] (0x4000): reusing cached connection (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ipa_get_ad_override_connect_done] (0x4000): Searching for overrides in view [Default Trust View] with filter [(&(objectClass=ipaOverrideAnchor)(ipaAnchorUUID=:SID:S-1-5-21-922099545-2851689246-2917073205-16902))]. (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sdap_print_server] (0x2000): Searching 172.20.23.190:389 (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sdap_get_generic_ext_step] (0x0400): calling ldap_search_ext with [(&(objectClass=ipaOverrideAnchor)(ipaAnchorUUID=:SID:S-1-5-21-922099545-2851689246-2917073205-16902))][cn=Default Trust View,cn=views,cn=accounts,dc=ipa,dc=chotel,dc=com]. (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sdap_get_generic_ext_step] (0x2000): ldap_search_ext called, msgid = 32 (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sdap_op_add] (0x2000): New operation 32 timeout 6 (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sdap_process_result] (0x2000): Trace: sh[0x55f30a5d1080], connected[1], ops[(nil)], ldap[0x55f30a5d0f90] (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sdap_process_result] (0x2000): Trace: end of ldap_result list (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sdap_process_result] (0x2000): Trace: sh[0x55f30a5d1940], connected[1], ops[0x55f30a645310], ldap[0x55f30a5ce320] (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sdap_process_message] (0x4000): Message type: [LDAP_RES_SEARCH_ENTRY] (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sdap_parse_entry] (0x1000): OriginalDN: [ipaanchoruuid=:SID:S-1-5-21-922099545-2851689246-2917073205-16902,cn=Default Trust View,cn=views,cn=accounts,dc=ipa,dc=chotel,dc=com]. (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sdap_parse_range] (0x2000): No sub-attributes for [objectClass] (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sdap_parse_range] (0x2000): No sub-attributes for [loginShell] (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sdap_parse_range] (0x2000): No sub-attributes for [uidNumber] (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sdap_parse_range] (0x2000): No sub-attributes for [ipaAnchorUUID] (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sdap_parse_range] (0x2000): No sub-attributes for [gidNumber] (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sdap_parse_range] (0x2000): No sub-attributes for [homeDirectory] (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sdap_parse_range] (0x2000): No sub-attributes for [ipaOriginalUid] (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sdap_process_result] (0x2000): Trace: sh[0x55f30a5d1940], connected[1], ops[0x55f30a645310], ldap[0x55f30a5ce320] (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sdap_process_message] (0x4000): Message type: [LDAP_RES_SEARCH_RESULT] (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sdap_get_generic_op_finished] (0x0400): Search result: Success(0), no errmsg set (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sdap_op_destructor] (0x2000): Operation 32 finished (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ipa_get_ad_override_done] (0x4000): Found override for object with filter [(&(objectClass=ipaOverrideAnchor)(ipaAnchorUUID=:SID:S-1-5-21-922099545-2851689246-2917073205-16902))]. (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sdap_id_op_destroy] (0x4000): releasing operation connection (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sysdb_apply_default_override] (0x4000): Override [uidNumber] with [40001] for [name=user.name(a)ad.example.com,cn=users,cn=ad.example.com,cn=sysdb]. (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sysdb_apply_default_override] (0x0080): Override attribute for [gidNumber] has more [2] than one value, using only the first. (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sysdb_apply_default_override] (0x4000): Override [gidNumber] with [40001] for [name=user.name(a)ad.example.com,cn=users,cn=ad.example.com,cn=sysdb]. (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sysdb_apply_default_override] (0x4000): Override [homeDirectory] with [/home/user.name] for [name=user.name(a)ad.example.com,cn=users,cn=ad.example.com,cn=sysdb]. (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sysdb_apply_default_override] (0x4000): Override [loginShell] with [/bin/bash] for [name=user.name(a)ad.example.com,cn=users,cn=ad.example.com,cn=sysdb]. (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ldb] (0x4000): Added timed event "ltdb_callback": 0x55f30a6819a0 (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ldb] (0x4000): Added timed event "ltdb_timeout": 0x55f30a681a60 (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ldb] (0x4000): Running timer event 0x55f30a6819a0 "ltdb_callback" (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ldb] (0x4000): Destroying timer event 0x55f30a681a60 "ltdb_timeout" (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ldb] (0x4000): Ending timer event 0x55f30a6819a0 "ltdb_callback" (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [safe_original_attributes] (0x4000): Original object does not have [sshPublicKey] set. (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ldb] (0x4000): Added timed event "ltdb_callback": 0x55f30a683c50 (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ldb] (0x4000): Added timed event "ltdb_timeout": 0x55f30a683d10 (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ldb] (0x4000): Running timer event 0x55f30a683c50 "ltdb_callback" (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ldb] (0x4000): Destroying timer event 0x55f30a683d10 "ltdb_timeout" (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ldb] (0x4000): Ending timer event 0x55f30a683c50 "ltdb_callback" (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sysdb_ldb_msg_difference] (0x2000): Replaced/extended attr [uidNumber] of entry [name=user.name(a)ad.example.com,cn=users,cn=ad.example.com,cn=sysdb] (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ldb] (0x4000): start ldb transaction (nesting: 0) (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ldb] (0x4000): Added timed event "ltdb_callback": 0x55f30a68d1c0 (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ldb] (0x4000): Added timed event "ltdb_timeout": 0x55f30a68d280 (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ldb] (0x4000): Running timer event 0x55f30a68d1c0 "ltdb_callback" (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ldb] (0x4000): Destroying timer event 0x55f30a68d280 "ltdb_timeout" (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ldb] (0x4000): Ending timer event 0x55f30a68d1c0 "ltdb_callback" (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ldb] (0x4000): commit ldb transaction (nesting: 0) (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sysdb_set_entry_attr] (0x0200): Entry [name=user.name(a)ad.example.com,cn=users,cn=ad.example.com,cn=sysdb] has set [cache, ts_cache] attrs. (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ldb] (0x4000): Added timed event "ltdb_callback": 0x55f30a68d330 (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ldb] (0x4000): Added timed event "ltdb_timeout": 0x55f30a688900 (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ldb] (0x4000): Running timer event 0x55f30a68d330 "ltdb_callback" (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ldb] (0x4000): Added timed event "ltdb_callback": 0x55f30a689320 (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ldb] (0x4000): Added timed event "ltdb_timeout": 0x55f30a6893e0 (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ldb] (0x4000): Destroying timer event 0x55f30a688900 "ltdb_timeout" (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ldb] (0x4000): Ending timer event 0x55f30a68d330 "ltdb_callback" (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ldb] (0x4000): Running timer event 0x55f30a689320 "ltdb_callback" (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ldb] (0x4000): Added timed event "ltdb_callback": 0x55f30a634920 (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ldb] (0x4000): Added timed event "ltdb_timeout": 0x55f30a6349e0 (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ldb] (0x4000): Destroying timer event 0x55f30a6893e0 "ltdb_timeout" (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ldb] (0x4000): Ending timer event 0x55f30a689320 "ltdb_callback" (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ldb] (0x4000): Running timer event 0x55f30a634920 "ltdb_callback" (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ldb] (0x4000): Destroying timer event 0x55f30a6349e0 "ltdb_timeout" (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ldb] (0x4000): Ending timer event 0x55f30a634920 "ltdb_callback" (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ipa_initgr_get_overrides_step] (0x1000): Processing group 0/1 (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ipa_initgr_get_overrides_step] (0x1000): Fetching group S-1-5-21-922099545-2851689246-2917073205-20676 (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sdap_id_op_connect_step] (0x4000): reusing cached connection (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ipa_get_ad_override_connect_done] (0x4000): Searching for overrides in view [Default Trust View] with filter [(&(objectClass=ipaOverrideAnchor)(ipaAnchorUUID=:SID:S-1-5-21-922099545-2851689246-2917073205-20676))]. (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sdap_print_server] (0x2000): Searching 172.20.23.190:389 (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sdap_get_generic_ext_step] (0x0400): calling ldap_search_ext with [(&(objectClass=ipaOverrideAnchor)(ipaAnchorUUID=:SID:S-1-5-21-922099545-2851689246-2917073205-20676))][cn=Default Trust View,cn=views,cn=accounts,dc=ipa,dc=chotel,dc=com]. (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sdap_get_generic_ext_step] (0x2000): ldap_search_ext called, msgid = 33 (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sdap_op_add] (0x2000): New operation 33 timeout 6 (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sdap_process_result] (0x2000): Trace: sh[0x55f30a5d1940], connected[1], ops[0x55f30a63f270], ldap[0x55f30a5ce320] (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sdap_process_result] (0x2000): Trace: end of ldap_result list (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sdap_process_result] (0x2000): Trace: sh[0x55f30a5d1940], connected[1], ops[0x55f30a63f270], ldap[0x55f30a5ce320] (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sdap_process_message] (0x4000): Message type: [LDAP_RES_SEARCH_RESULT] (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sdap_get_generic_op_finished] (0x0400): Search result: Success(0), no errmsg set (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sdap_op_destructor] (0x2000): Operation 33 finished (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ipa_get_ad_override_done] (0x4000): No override found with filter [(&(objectClass=ipaOverrideAnchor)(ipaAnchorUUID=:SID:S-1-5-21-922099545-2851689246-2917073205-20676))]. (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [sdap_id_op_destroy] (0x4000): releasing operation connection (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ipa_initgr_get_overrides_step] (0x1000): Processing group 1/1 (Fri Aug 24 16:30:12 2018) [sssd[be[ipa.example.com]]] [ipa_get_ad_memberships_send] (0x0400): External group information still valid. ## /etc/sssd/sssd.conf [domain/ipa.example.com] cache_credentials = True krb5_store_password_if_offline = True # krb5_realm = IPA.EXAMPLE.COM ipa_domain = ipa.example.com ipa_hostname = entl01.ipa.example.com # Server Specific Settings ipa_server = entl01.ipa.example.com ipa_server_mode = True subdomain_homedir = %o fallback_homedir = /home/%u default_shell = /bin/bash id_provider = ipa auth_provider = ipa access_provider = ipa chpass_provider = ipa ldap_tls_cacert = /etc/ipa/ca.crt [sssd] services = nss, sudo, pam, ssh domains = ipa.example.com [nss] filter_users = root,ldap,named,avahi,haldaemon,dbus,radiusd,news,nscd,tomcat,activemq,informix,oracle,xdba,grid,dbadmin,weblogic,operator,postgres,devolog memcache_timeout = 600 homedir_substring = /home [pam] [sudo] [autofs] [ssh] [pac] [ifp]

2 1

Enumerate users from external group from AD trust
by Bolke de Bruin 29 Nov '19

29 Nov '19

Hello, I have sssd 1.13.00 working against FreeIPA 4.2 domain. This domain has a trust relationship with a active directory domain. One of the systems we are using requires to enumerate all users in groups by (unfortunate) design (Apache Ranger). This is done by using “getent group”. During this enumeration the full user list for a group that has a nested external member group* is not always returned so we thought to add “getent group mygroup” in order to get more details. Unfortunately this does not seem to work consistently: sometimes this gives information sometimes it does not: [root@master centos]# getent group ad_users ad_users:*:1950000004: [root@master centos]# id bolke(a)ad.local UID=1796201107(bolke(a)ad.local) GID=1796201107(bolke(a)ad.local) groepen=1796201107(bolke(a)ad.local),1796200513(domain users@ad.local),1796201108(test@ad.local) [root@master centos]# getent group ad_users ad_users:*:1950000004:bolke@ad.local <mailto:bolke@ad.local> If I clear the cache (sss_cache -E) the entry is gone again: [root@master centos]# getent group ad_users ad_users:*:1950000004: My question is how do I get sssd to enumerate *all users* in a group consistently? Thanks! Bolke * https://docs.fedoraproject.org/en-US/Fedora/18/html/FreeIPA_Guide/trust-gro…

3 15

SSSD strangeness
by simonc99＠hotmail.com 05 Nov '19

05 Nov '19

Hi All We've got SSSD 1.13.0 installed as part of a Centos 7.2.1511 installation. We've used realmd to join the host concerned to our 2008R2 AD system. This went really well, and consequently we've been using SSSD to provide login services and kerberos integration for our fairly large hadoop system. The authconfig that's implicitly run as part of realmd produces the following sssd.conf: [sssd] domains = <joined domain> config_file_version = 2 services = nss, pam [pam] debug_level = 0x0080 [nss] timeout = 20 force_timeout = 600 debug_level = 0x0080 [domain/<joined domain>] ad_domain = <joined domain> krb5_realm = <JOINED DOMAIN> realmd_tags = manages-system joined-with-samba cache_credentials = true id_provider = ad krb5_store_password_if_offline = True default_shell = /bin/bash ldap_id_mapping = True use_fully_qualified_names = False fallback_homedir = /home/%u@%d access_provider = simple simple_allow_groups = <AD group allowing logins> krb5_use_kdc_info = False entry_cache_timeout = 300 debug_level = 0x0080 ad_server = <active directory server> As I've said - this works really well. We did have some stability issues initially, but they've been fixed by defining the 'ad_server' rather than using autodiscovery. Logins work fine, kerberos TGTs are issued on login, and password changes are honoured correctly. However, in general day to day use, we have noticed a few anomalies, that we just can't track down. Firstly (this has happened a few times), a user will change their AD password (via a Windows PC). Subsequent logins - sometimes with specific client software - fail with pam_sss(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=<remote PC name> user=<username> pam_sss(sshd:auth): received for user <username>: 17 (failure setting user credentials) So in this example, the person concerned has changed their AD password. Further attempts to access this system via SSH work fine. However, using SFTP doesn't work (the above is output into /var/log/secure). There are no local controls on sftp logins, and the user concerned was working fine (using both sftp and ssh) until they updated their password. There is no separate sftp daemon running, and it only affects one individual currently (but we have seen some very similar instances before) The second issue we have is around phantom groups in AD. Hadoop uses an id -Gn command to see group membership for authorisation. With some users - we've seen 6 currently - we see certain groups failing to be looked up: id -Gn <username> id: cannot find name for group ID xxxxyyyyy <group name> <group name> <group name> <group name> <etc...> The xxxxyyyyy indicates: xxxx = hashed realm name yyyyy = RID from group in AD We can't find any group with that number on the AD side! We can work around this by adding a local group (into /etc/group) for the GIDs affected. This means the id -Gn runs correctly, and the hadoop namenode can function correctly - but this is a workaround and we'd like to get to the bottom of the issue. Rather than flooding this post now with logfiles, just thought I'd see if this looked familiar to anyone. Happy to upload any logs, amend logging levels, etc. Many thanks Simon

4 7

Re: Ubuntu Bionic - sssd 1.16.1 - kerberos ticket not renewing
by Jakub Hrozek 01 Nov '18

01 Nov '18

On Wed, Oct 31, 2018 at 08:20:55PM +0000, Jay McCanta wrote: > Yes. Kinit -R renews the ticket (if it hasn't expired). OK, can you attach a snippet of the logs? I thiknk the domain log and the krb5_child.log are the most important.

2 1

Re: Ubuntu Bionic - sssd 1.16.1 - kerberos ticket not renewing
by Jakub Hrozek 31 Oct '18

31 Oct '18

On Wed, Oct 31, 2018 at 07:19:44PM +0000, Jay McCanta wrote: > I have a new server running Ubuntu Bionic (18.04.01) with sssd 1.16.1-1ubuntu1. The problem is that our Kerberos tickets are not being renewed while we are logged in. I have tried using FILE and KEYRING credential caches. SSH has Kerberos disabled, GSSAPI disabled, and is configured to use PAM. Logging works, but the ticket expires without being renewed. We are using sssd-ad for auth. I've cranked up the debug to level 9. I am unsure where to start to try to troubleshoot. Advice is appreciated. > > Jay McCanta > F5 Networks, Inc. > > Here's a sample ticket: > > Ticket cache: KEYRING:persistent:27644:krb_ccache_pBjYhsU > Default principal: mccanta-admin(a)OLYMPUS.F5NET.COM > > 10/31/2018 16:15:51 11/01/2018 02:15:51 krbtgt/EXAMPLE.COM(a)EXAMPLE.COM > renew until 11/07/2018 16:15:51 Can you renew the ticket with kinit -R ? > > /etc/sssd/sssd.conf (ad_access_filter omitted for security): > [sssd] > config_file_version = 2 > domains = example.com > services = nss, pam > debug_level = 9 > reconnection_retries = 3 > > [nss] > debug_level = 9 > > [pam] > debug_level = 9 > > [domain/example.com] > debug_level = 9 > id_provider = ad > default_ccache_tempate=KEYRING:persistent:%U > krb5_renewable_lifetime=10d > krb_renew_interval=2h > auth_provider = ad > access_provider = ad > ldap_id_mapping = False > ad_gpo_access_control = permissive > > Krb5.conf: > [libdefaults] > default_realm = EXAMPLE.COM > dns_lookup_realm = true > dns_lookup_kdc = true > ticket_lifetime = 24h > renew_lifetime = 7d > rdns = false > forwardable = yes > default_ccache_name=KEYRING:persistent:%{uid} > > [realms] > EXAMPLE.COM = { > default_domain = example.com > #site=SE3CIP > kdc=dc01.example.com:88 > kdc=dc02.example.com:88 > } > > [domain_realm] > example.com = EXAMPLE.COM > .example.com = EXAMPLE.COM > _______________________________________________ > sssd-users mailing list -- sssd-users(a)lists.fedorahosted.org > To unsubscribe send an email to sssd-users-leave(a)lists.fedorahosted.org > Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html > List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines > List Archives: https://lists.fedorahosted.org/archives/list/sssd-users@lists.fedorahosted.…

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Default user quotas with SSSD
by TomK 31 Oct '18

31 Oct '18

Does SSSD allow setting quotas for existing or newly authenticated users? -- Cheers, Tom K. ------------------------------------------------------------------------------------- Living on earth is expensive, but it includes a free trip around the sun.

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Ubuntu Bionic - sssd 1.16.1 - kerberos ticket not renewing
by Jay McCanta 31 Oct '18

31 Oct '18

I have a new server running Ubuntu Bionic (18.04.01) with sssd 1.16.1-1ubuntu1. The problem is that our Kerberos tickets are not being renewed while we are logged in. I have tried using FILE and KEYRING credential caches. SSH has Kerberos disabled, GSSAPI disabled, and is configured to use PAM. Logging works, but the ticket expires without being renewed. We are using sssd-ad for auth. I've cranked up the debug to level 9. I am unsure where to start to try to troubleshoot. Advice is appreciated. Jay McCanta F5 Networks, Inc. Here's a sample ticket: Ticket cache: KEYRING:persistent:27644:krb_ccache_pBjYhsU Default principal: mccanta-admin(a)OLYMPUS.F5NET.COM 10/31/2018 16:15:51 11/01/2018 02:15:51 krbtgt/EXAMPLE.COM(a)EXAMPLE.COM renew until 11/07/2018 16:15:51 /etc/sssd/sssd.conf (ad_access_filter omitted for security): [sssd] config_file_version = 2 domains = example.com services = nss, pam debug_level = 9 reconnection_retries = 3 [nss] debug_level = 9 [pam] debug_level = 9 [domain/example.com] debug_level = 9 id_provider = ad default_ccache_tempate=KEYRING:persistent:%U krb5_renewable_lifetime=10d krb_renew_interval=2h auth_provider = ad access_provider = ad ldap_id_mapping = False ad_gpo_access_control = permissive Krb5.conf: [libdefaults] default_realm = EXAMPLE.COM dns_lookup_realm = true dns_lookup_kdc = true ticket_lifetime = 24h renew_lifetime = 7d rdns = false forwardable = yes default_ccache_name=KEYRING:persistent:%{uid} [realms] EXAMPLE.COM = { default_domain = example.com #site=SE3CIP kdc=dc01.example.com:88 kdc=dc02.example.com:88 } [domain_realm] example.com = EXAMPLE.COM .example.com = EXAMPLE.COM

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problems with expiring password
by Bartłomiej Solarz-Niesłuchowski 31 Oct '18

31 Oct '18

Dear List, On my network we use ldap to "aging" password. Every user is definied in ldap server (openldap) with 5 attributes: shadowLastChange: 15308 shadowInactive: 30 shadowMin: 0 shadowMax: 120 shadowWarning: 30 the sssd uses 6 attributes: shadowLastChange shadowMin shadowMax shadowWarning shadowInactive shadowExpire We have NO shadowExpire attribute (in mathematical point of view shadowExpire = shadowLastChange+shadowLastChange). So how can we use sssd with password "aging" option....? Best Regards -- Bartłomiej Solarz-Niesłuchowski, Administrator WSISiZ e-mail: Bartlomiej.Solarz-Niesluchowski(a)wit.edu.pl tel. 223486547, fax 223486501 JID: solarz(a)jabber.wit.edu.pl 01-447 Warszawa, ul. Newelska 6, pokój 421, pon.-pt. 8-16 Motto - Jak sobie pościelisz tak sie wyśpisz

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Clarification on Keytabs, UPNs, and samAccountNames
by Erinn Looney-Triggs 30 Oct '18

30 Oct '18

Folks I wanted to try to get some clarification on entries in a default keytab. This whole thing started with switching from using adcli on RHEL 7.5 to using realmd which defaults to using winbind/samba to join a system. With adcli the keytab created on join (using realm join) looked something like this (ordering of entries is important here, and I am omitting duplicate entries with different encryption types for brevity): EXAMPLE$(a)AD.EXAMPLE.COM host/EXAMPLE(a)AD.EXAMPLE.COM host/example.ad.example.com(a)AD.EXAMPLE.COM RestrictedKrbHost/EXAMPLE(a)AD.EXAMPLE.COM RestrictedKrbHost/example.ad.example.com(a)AD.EXAMPLE.COM Ok I can successfully kinit with the keytab using the samAccountName/NetBIOS name: kinit -k EXAMPLE$ I can NOT kinit with the other principals, the following fails: host/EXAMPLE(a)AD.EXAMPLE.COM host/example.ad.example.com(a)AD.EXAMPLE.COM RestrictedKrbHost/EXAMPLE(a)AD.EXAMPLE.COM RestrictedKrbHost/example.ad.example.com(a)AD.EXAMPLE.COM All fail with variation of: kinit: Client 'X' not found in Kerberos database while getting initial credentials After reading a lot this makes sense, these are service principals not host or user principals, best reference is here: https://ssimo.org/blog/id_016.html (Thanks Simo!) You can make some of these host principals by setting the userPrincipalName to something like host/EXAMPLE(a)AD.EXAMPLE.COM or host/example.ad.example.com(a)AD.EXAMPLE.COM but this does not happen by default with realm join (which contradicts the man pages, I have a bug open on that here: https://bugzilla.redhat.com/show_bug.cgi?id=1643814) Fine, now when joining using samba/winbind you end up with a keytab like this (here I will not omit the duplicates as it seems important to capture it all): host/example.ad.example.com(a)AD.EXAMPLE.COM host/EXAMPLE(a)AD.EXAMPLE.COM host/example.ad.example.com(a)AD.EXAMPLE.COM host/EXAMPLE(a)AD.EXAMPLE.COM host/example.ad.example.com(a)AD.EXAMPLE.COM host/EXAMPLE(a)AD.EXAMPLE.COM host/example.ad.example.com(a)AD.EXAMPLE.COM host/EXAMPLE(a)AD.EXAMPLE.COM host/example.ad.example.com(a)AD.EXAMPLE.COM host/EXAMPLE(a)AD.EXAMPLE.COM EXAMPLE$(a)AD.EXAMPLE.COM EXAMPLE$(a)AD.EXAMPLE.COM EXAMPLE$(a)AD.EXAMPLE.COM EXAMPLE$(a)AD.EXAMPLE.COM EXAMPLE$(a)AD.EXAMPLE.COM Again I can kinit with the NetBIOS name but no others. Now the trouble arises for me when I am trying to use something like requests-gssapi: https://github.com/pythongssapi/requests-gssapi when the system is joined using realmd/adcli simple code will work, it will kinit as the first principal it finds in the keytab, which is the NetBIOS name/samAccountName which is a host principal, everything just works. However, when the system is joined using realmd/samba the keytab is in a completely different order and it turns out those first entries, they are not user principals nor host principals so everything at that point fails with 'client not found'. How to specify the principal to use is spectacularly unclear to me at least in python-gssapi and requests-gssapi, but that isn't really the question here. If you know the answer to that though, please feel free to chime in. What should be the host or user principals that are held by the default keytab? And what should be service principals? And most importantly why? It is all very unclear to me. I can force realmd to create a userPrincipleName which maps to a user principal with the --user-principal flag, but what is correct? Samba defaults to creating a UPN of host/EXAMPLE(a)AD.EXAMPLE.COM, and adcli defaults to host/example(a)AD.EXAMPLE.COM (which isn't even in the keytab) if user-princpal=yes in /etc/realmd.conf, otherwise I have not figured out how to use defaults from the command line and the man page appears to be incorrect that a UPN is created by default. I can obviously specify host/example.ad.example.com(a)AD.EXAMPLE.COM. But I can't seem to cover all the entries that are created by default in the /etc/krb5.keytab nor am I even sure if I should, if I could. Clarity here would be much appreciated. And good luck with IBM, I really hope it makes things better.

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sssd-users October 2018