Bug 890520

Summary:	Failover to krb5_backup_kpasswd doesn't work
Product:	Red Hat Enterprise Linux 6	Reporter:	Kaushik Banerjee <kbanerje>
Component:	sssd	Assignee:	Jakub Hrozek <jhrozek>
Status:	CLOSED ERRATA	QA Contact:	Kaushik Banerjee <kbanerje>
Severity:	unspecified	Docs Contact:
Priority:	medium
Version:	6.4	CC:	dpal, grajaiya, jgalipea, okos, pbrezina, tlavigne
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	sssd-1.9.2-61.el6	Doc Type:	Bug Fix
Doc Text:	No documentation needed.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2013-02-21 09:43:00 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	895654

Description Kaushik Banerjee 2012-12-27 13:28:04 UTC

Description of problem:
Failover to krb5_backup_kpasswd doesn't work

Version-Release number of selected component (if applicable):
sssd-1.9.2-59.el6

How reproducible:
Always

Steps to Reproduce:
1. [domain/LDAP-KRB5]
debug_level = 0xFFF0
id_provider = ldap
ldap_uri = ldap://ldapserver.example.com
ldap_search_base = dc=example,dc=com
auth_provider = krb5
krb5_realm = EXAMPLE.COM
krb5_server = kdc.example.com
krb5_kpasswd = kdc1.example.com    <== KDC doesn't exist on this machine
krb5_backup_kpasswd = kdc.example.com

2. Try to change password:
# ssh -l puser1 localhost
puser1@localhost's password: 
Last login: Thu Dec 27 18:23:42 2012 from localhost
-sh-4.1$ passwd
Changing password for user puser1.
Current Password: 
New password: 
Retype new password: 
passwd: Authentication token manipulation error
-sh-4.1$ 

  
Actual results:
Password change fails. It seems sssd doesn't failover to the kpasswd server specified under krb5_backup_kpasswd

/var/log/secure shows:
Dec 27 18:25:49 dhcp201-200 passwd: pam_sss(passwd:chauthtok): system info: [Ticket expired]
Dec 27 18:25:49 dhcp201-200 passwd: pam_sss(passwd:chauthtok): Password change failed for user puser1: 20 (Authentication token manipulation error)

Expected results:
Failover should work.

Additional info:
Domain logs:
(Thu Dec 27 18:25:49 2012) [sssd[be[LDAP-KRB5]]] [fo_resolve_service_send] (0x0100): Trying to resolve service 'KPASSWD'
(Thu Dec 27 18:25:49 2012) [sssd[be[LDAP-KRB5]]] [get_server_status] (0x1000): Status of server 'kdc1.example.com' is 'name resolved'
(Thu Dec 27 18:25:49 2012) [sssd[be[LDAP-KRB5]]] [fo_resolve_service_activate_timeout] (0x2000): Resolve timeout set to 10 seconds
(Thu Dec 27 18:25:49 2012) [sssd[be[LDAP-KRB5]]] [get_server_status] (0x1000): Status of server 'kdc1.example.com' is 'name resolved'
(Thu Dec 27 18:25:49 2012) [sssd[be[LDAP-KRB5]]] [be_resolve_server_process] (0x1000): Saving the first resolved server
(Thu Dec 27 18:25:49 2012) [sssd[be[LDAP-KRB5]]] [be_resolve_server_process] (0x0200): Found address for server kdc1.example.com: [192.168.122.94] TTL 300
(Thu Dec 27 18:25:49 2012) [sssd[be[LDAP-KRB5]]] [krb5_find_ccache_step] (0x0080): Saved ccache FILE:/tmp/krb5cc_2001_EVW1EM if of different type than ccache in configuration file, reusing the old ccache
(Thu Dec 27 18:25:49 2012) [sssd[be[LDAP-KRB5]]] [child_handler_setup] (0x2000): Setting up signal handler up for pid [14535]
(Thu Dec 27 18:25:49 2012) [sssd[be[LDAP-KRB5]]] [child_handler_setup] (0x2000): Signal handler set up for pid [14535]
(Thu Dec 27 18:25:49 2012) [sssd[be[LDAP-KRB5]]] [write_pipe_handler] (0x0400): All data has been sent!
(Thu Dec 27 18:25:49 2012) [sssd[be[LDAP-KRB5]]] [become_user] (0x0200): Trying to become user [2001][2001].
(Thu Dec 27 18:25:49 2012) [sssd[be[LDAP-KRB5]]] [read_pipe_handler] (0x0400): EOF received, client finished
(Thu Dec 27 18:25:49 2012) [sssd[be[LDAP-KRB5]]] [parse_krb5_child_response] (0x1000): child response [20][1][15].
(Thu Dec 27 18:25:49 2012) [sssd[be[LDAP-KRB5]]] [check_wait_queue] (0x1000): Wait queue for user [puser1] is empty.
(Thu Dec 27 18:25:49 2012) [sssd[be[LDAP-KRB5]]] [be_pam_handler_callback] (0x0100): Backend returned: (0, 20, <NULL>) [Success]
(Thu Dec 27 18:25:49 2012) [sssd[be[LDAP-KRB5]]] [be_pam_handler_callback] (0x0100): Sending result [20][LDAP-KRB5]
(Thu Dec 27 18:25:49 2012) [sssd[be[LDAP-KRB5]]] [be_pam_handler_callback] (0x0100): Sent result [20][LDAP-KRB5]
(Thu Dec 27 18:25:49 2012) [sssd[be[LDAP-KRB5]]] [child_sig_handler] (0x1000): Waiting for child [14535].
(Thu Dec 27 18:25:49 2012) [sssd[be[LDAP-KRB5]]] [child_sig_handler] (0x0100): child [14535] finished successfully.
(Thu Dec 27 18:25:49 2012) [sssd[be[LDAP-KRB5]]] [sss_child_handler] (0x2000): waitpid failed [10]: No child processes

Comment 2 RHEL Program Management 2012-12-31 06:48:48 UTC

This request was not resolved in time for the current release.
Red Hat invites you to ask your support representative to
propose this request, if still desired, for consideration in
the next release of Red Hat Enterprise Linux.

Comment 3 Pavel Březina 2013-01-02 08:05:58 UTC

Upstream ticket:
https://fedorahosted.org/sssd/ticket/1735

Comment 6 Kaushik Banerjee 2013-01-11 10:14:55 UTC

Verified in version 1.9.2-68

Report from beaker automation run:
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
:: [   LOG    ] :: failover-krb5_backup_kpasswd_001 Server1 down, Server2 online
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

:: [   LOG    ] :: Stopping KADMIND on SERVER1 and sleeping for 1 second
:: [   PASS   ] :: Authentication successful, as expected
:: [   PASS   ] :: Running 'auth_success puser1 Server2_123'
:: [   PASS   ] :: Authentication successful, as expected
:: [   PASS   ] :: Running 'auth_success puser1 NewPass_123'
:: [   LOG    ] :: Starting KADMIND on SERVER1 and sleeping for 5 seconds
:: [   LOG    ] :: Duration: 14s
:: [   LOG    ] :: Assertions: 4 good, 0 bad
:: [   PASS   ] :: RESULT: failover-krb5_backup_kpasswd_001 Server1 down, Server2 online

::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
:: [   LOG    ] :: failover-krb5_backup_kpasswd_002 Failover with single server different ports
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

:: [   LOG    ] :: Sleeping for 5 seconds
:: [   PASS   ] :: Authentication successful, as expected
:: [   PASS   ] :: Running 'auth_success puser1 NewPass_123'
:: [   LOG    ] :: Duration: 12s
:: [   LOG    ] :: Assertions: 2 good, 0 bad
:: [   PASS   ] :: RESULT: failover-krb5_backup_kpasswd_002 Failover with single server different ports

Comment 7 errata-xmlrpc 2013-02-21 09:43:00 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHSA-2013-0508.html