[Bug 1807246] Re: after upgrading to bionic, my session forgets who I am frequently

[Andreas Hasenack]

** Description changed:

- I configured sssd on an Ubuntu 16.04 LTS system, and it worked just
- fine.  In fact, using the same sssd.conf file (which is managed by
- puppet) on un-upgraded system continues to work fine.
+ [Impact]
+ 
+  * An explanation of the effects of the bug on users and
+ 
+  * justification for backporting the fix to the stable release.
+ 
+  * In addition, it is helpful, but not required, to include an
+    explanation of how the upload fixes this bug.
+ 
+ [Test Case]
+ 
+  * detailed instructions how to reproduce the bug
+ 
+  * these should allow someone who is not familiar with the affected
+    package to reproduce the bug and verify that the updated package fixes
+    the problem.
+ 
+ [Regression Potential]
+ 
+  * discussion of how regressions are most likely to manifest as a result
+ of this change.
+ 
+  * It is assumed that any SRU candidate patch is well-tested before
+    upload and has a low overall risk of regression, but it's important
+    to make the effort to think about what ''could'' happen in the
+    event of a regression.
+ 
+  * This both shows the SRU team that the risks have been considered,
+    and provides guidance to testers in regression-testing the SRU.
+ 
+ [Other Info]
+  
+  * Anything else you think is useful to include
+  * Anticipate questions from users, SRU, +1 maintenance, security teams and the Technical Board
+  * and address these questions in advance
+ 
+ [Original Description]
+ I configured sssd on an Ubuntu 16.04 LTS system, and it worked just fine.  In fact, using the same sssd.conf file (which is managed by puppet) on un-upgraded system continues to work fine.
  
  However, after upgrading to 18.04.1 LTS, I find that the system is
  continuously forgetting who I am.  After a few commands, or a few
  minutes (I'm not sure exactly how many, but around 3-5 minutes) if I try
  to run sudo or whoami, it says that I am an unknown user.   for example,
  
  ```
  whoami
  whoami: cannot find name for user ID 2000: Unknown error 1432158300
  ```
  
  if I run the id command on my username, it returns the correct results,
  and whoami/sudo/other restricted commands will work again for a short
  time before forgetting who I am again.
  
  In the sssd_nss.log file, I see the lookup against the @local domain,
  but I do not see a related lookup in the ldap domain either in that log
  file or in the log file specific to the ldap domain.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: sssd 1.16.1-1ubuntu1
  ProcVersionSignature: Ubuntu 4.15.0-42.45-generic 4.15.18
  Uname: Linux 4.15.0-42-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.5
  Architecture: amd64
  Date: Thu Dec  6 12:30:43 2018
  Ec2AMI: ami-ea677d80
  Ec2AMIManifest: (unknown)
  Ec2AvailabilityZone: us-east-1c
  Ec2InstanceType: t2.small
  Ec2Kernel: unavailable
  Ec2Ramdisk: unavailable
  SourcePackage: sssd
  UpgradeStatus: Upgraded to bionic on 2018-10-04 (63 days ago)

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Title:
  after upgrading to bionic, my session forgets who I am frequently

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