SSSD - Privesc timeouts returning 'permission denied'

When using 'become: true' in one of your tasks and centralized users (389-ds, FreeIPA, Active Directory) the authentication daemon needs to validate if the user is allowed to run sudo on that host.

Timeouts can happen for various reasons, so it's best to check /var/log/secure or /var/log/auth for errors. In my case, I got this error:

 pam_sss(systemd-user:account): Access denied for user executor: 6 (Permission denied)

The first thing to check is if the user is allowed to use that service on the host. In my case with FreeIPA, the result is just a hbactest command away:

 [archy@ipa02 ~]$ ipa hbactest --user 'executor' --host 'logstash02.archyslife.lan' --service 'sudo' | egrep -vi 'not'  
 --------------------  
 Access granted: True  
 --------------------  
  Matched rules: allow_executor_all_hosts

In further debugging, I found that the swap and ram were heavily utilized on that host. The solution here was to restart the service that was causing the utilization and restarting sssd:

 [archy@logstash02 ~]$ su - -c 'systemctl restart logstash.service sssd.service'  
 Password:  
 [archy@logstash02 ~]$

If you rerun the ansible play, it should go through without timeout errors.

Feel free to comment and / or suggest a topic.

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