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Bug 1891932 - GSSAPI Proxy Daemon unable to handle renewed /etc/krb5.keytab
Summary: GSSAPI Proxy Daemon unable to handle renewed /etc/krb5.keytab
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Red Hat Satellite
Classification: Red Hat
Component: Authentication
Version: 6.7.0
Hardware: Unspecified
OS: Unspecified
unspecified
medium
Target Milestone: Unspecified
Assignee: satellite6-bugs
QA Contact: Omkar Khatavkar
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2020-10-27 17:30 UTC by Amar Huchchanavar
Modified: 2022-10-28 18:01 UTC (History)
5 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2022-10-28 18:01:59 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Foreman Issue Tracker 31700 0 Normal New GSSAPI Proxy Daemon unable to handle renewed /etc/krb5.keytab 2021-02-18 15:35:05 UTC

Description Amar Huchchanavar 2020-10-27 17:30:57 UTC 
Description of problem:

Direct Auth configuration with AD stops working after 30 days. 

When the system renews  /etc/krb5.keytab or have new KVNO on the system, GSS-Proxy is unable to detect the new changes.
Due to this issue, AD user authentication does not work after 30dys. 

Version-Release number of selected component (if applicable):
Customer Env:
$ less installed-rpms |egrep "satellite-6|gssproxy"
gssproxy-0.7.0-28.el7.x86_64                                Wed Jun  3 17:42:58 2020
satellite-6.7.0-7.el7sat.noarch                             Wed Jun  3 17:38:40 2020

Test Env:
rpm -qa |egrep "satellite-6|gssproxy"
satellite-6.7.3-1.el7sat.noarch
gssproxy-0.7.0-29.el7.x86_64

How reproducible:
Always (positive results with above mentioned PKGs/version)

Steps to Reproduce:
1.Configure AD direct auth - https://access.redhat.com/documentation/en-us/red_hat_satellite/6.7/html/administering_red_hat_satellite/chap-red_hat_satellite-administering_red_hat_satellite-configuring_external_authentication#gss-proxy_admin

2. To get new KVNO:
   a. #realm leave  REALM-NAME
   b. #realm join 

3. Verify the KVNO numbers:
 
a.klist -kt /etc/httpd/conf/http.keytab 
b.klist -kt /etc/krb5.keytab

Example:
#klist -kt /etc/httpd/conf/http.keytab 
Keytab name: FILE:/etc/httpd/conf/http.keytab
KVNO Timestamp           Principal
---- ------------------- ------------------------------------------------------
   3 10/16/2020 01:47:13 HTTP/satellite.example.com.COM
   3 10/16/2020 01:47:13 HTTP/SATELLITE-HOST.COM
   3 10/16/2020 01:47:13 HTTP/satellite.example.com.COM
   3 10/16/2020 01:47:13 HTTP/SATELLITE-HOST.COM
   3 10/16/2020 01:47:13 HTTP/satellite.example.com.COM
   3 10/16/2020 01:47:13 HTTP/SATELLITE-HOST.COM
   3 10/16/2020 01:47:13 HTTP/satellite.example.com.COM
   3 10/16/2020 01:47:13 HTTP/SATELLITE-HOST.COM
   3 10/16/2020 01:47:13 HTTP/satellite.example.com.COM
   3 10/16/2020 01:47:13 HTTP/SATELLITE-HOST.COM
 
#klist -kt /etc/krb5.keytab
Keytab name: FILE:/etc/krb5.keytab
KVNO Timestamp           Principal
---- ------------------- ------------------------------------------------------
   5 10/27/2020 22:19:39 SATELLITE-HOST.COM
   5 10/27/2020 22:19:39 SATELLITE-HOST.COM
   5 10/27/2020 22:19:39 SATELLITE-HOST.COM
   5 10/27/2020 22:19:39 host/SATELLITE-HOST.COM
   5 10/27/2020 22:19:39 host/SATELLITE-HOST.COM
   5 10/27/2020 22:19:39 host/SATELLITE-HOST.COM
   5 10/27/2020 22:19:39 host/satellite.example.com.COM
   5 10/27/2020 22:19:39 host/satellite.example.com.COM
   5 10/27/2020 22:19:39 host/satellite.example.com.COM



4. #systemctl restart gssproxy.service

5. Try to login with AD user on Satellite UI. Results- Fails to login.


Actual results:
AD user authentication on Satellite WeUI fails after 30days.

Why after 30days?
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/windows_integration_guide/sssd-auto-keytab-renewal
~~~~
SSSD automatically renews the Kerberos host keytab file in an AD environment if the adcli package is installed. The daemon checks daily if the machine account password is older than the configured value and renews it if necessary.
The default renewal interval is 30 days. To change the default:

    Add the following parameter to the AD provider in your /etc/sssd/sssd.conf file:

    ad_maximum_machine_account_password_age = value_in_days
~~~



Expected results:
gssproxy should take necessay actions to handle the renewed /etc/krb5.keytab.

Additional info:

Logs:
Oct 27 22:19:40 achadha-rhsat sssd: tkey query failed: GSSAPI error: Major = Unspecified GSS failure.  Minor code may provide more information, Minor = Server not found in Kerberos database.
Oct 27 22:19:40 achadha-rhsat sssd: tkey query failed: GSSAPI error: Major = Unspecified GSS failure.  Minor code may provide more information, Minor = Server not found in Kerberos database.
Comment 6 Ondřej Ezr 2021-01-21 10:05:58 UTC 
Created redmine issue https://projects.theforeman.org/issues/31700 from this bug
Comment 13 Brad Buckingham 2022-09-02 20:25:18 UTC 
Upon review of our valid but aging backlog the Satellite Team has concluded that this Bugzilla does not meet the criteria for a resolution in the near term, and are planning to close in a month. This message may be a repeat of a previous update and the bug is again being considered to be closed. If you have any concerns about this, please contact your Red Hat Account team.  Thank you.
Comment 14 Brad Buckingham 2022-09-02 20:31:26 UTC 
Upon review of our valid but aging backlog the Satellite Team has concluded that this Bugzilla does not meet the criteria for a resolution in the near term, and are planning to close in a month. This message may be a repeat of a previous update and the bug is again being considered to be closed. If you have any concerns about this, please contact your Red Hat Account team.  Thank you.
Comment 15 Brad Buckingham 2022-10-28 18:01:59 UTC 
Thank you for your interest in Red Hat Satellite. We have evaluated this request, and while we recognize that it is a valid request, we do not expect this to be implemented in the product in the foreseeable future. This is due to other priorities for the product, and not a reflection on the request itself. We are therefore closing this out as WONTFIX. If you have any concerns about this feel free to contact your Red Hat Account Team. Thank you.
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