Bug 47043 – Add Samba/AD USN Rollback detection script to USI

Bug 47043 - Add Samba/AD USN Rollback detection script to USI


Summary:	Add Samba/AD USN Rollback detection script to USI

Status:	NEW

Product:	USI
Classification:	Unclassified
Component:	univention-support-info
Version:	unspecified
Hardware:	Other Linux

Importance:	P5 normal
Target Milestone:	---
Assigned To:	USI maintainer
QA Contact:

URL:	https://support.microsoft.com/en-us/h...
Keywords:

Depends on:	47042 47041
Blocks:
	Show dependency tree / graph

Reported:	2018-05-22 19:34 CEST by Arvid Requate
Modified:	2018-10-18 07:39 CEST (History)
CC List:	2 users (show)

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What kind of report is it?:	Development Internal
What type of bug is this?:	---
Who will be affected by this bug?:	---
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Ticket number:	2018052221000458
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Description Arvid Requate

2018-05-22 19:34:52 CEST

We should adjust the USI tool to detect a USN rollback in Samba/AD.


+++ This bug was initially created as a clone of Bug #47042 +++

We should also add a UMC Diagnostic check for the situation described below.

+++ This bug was initially created as a clone of Bug #47041 +++

In case a customer has more than one Samba/AD domain controller and he reverts one of them to an earlier VM snapshot (or restores from backup), the AD DRS replication mechanism is broken: All remaining DCs stop receiving changes from the reverted DC until his "highestCommittedUSN" has reached the number that it head before the revert happened.

Since these cases are not very obvious every day error conditions, we should have a Nagios check for that.