Bug 47042 - UMC Diagnostic check for Samba/AD USN Rollback
UMC Diagnostic check for Samba/AD USN Rollback
Status: NEW
Product: UCS
Classification: Unclassified
Component: UMC - System diagnostic
UCS 4.4
Other Linux
: P5 normal (vote)
: ---
Assigned To: UMC maintainers
UMC maintainers
https://support.microsoft.com/en-us/h...
:
Depends on: 47041
Blocks: 47043
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Reported: 2018-05-22 19:28 CEST by Arvid Requate
Modified: 2022-01-28 18:19 CET (History)
2 users (show)

See Also:
What kind of report is it?: Bug Report
What type of bug is this?: 5: Major Usability: Impairs usability in key scenarios
Who will be affected by this bug?: 1: Will affect a very few installed domains
How will those affected feel about the bug?: 5: Blocking further progress on the daily work
User Pain: 0.143
Enterprise Customer affected?: Yes
School Customer affected?:
ISV affected?:
Waiting Support:
Flags outvoted (downgraded) after PO Review:
Ticket number: 2018052221000458
Bug group (optional): bitesize
Max CVSS v3 score:


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Description Arvid Requate univentionstaff 2018-05-22 19:28:21 CEST
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.
Comment 1 Ingo Steuwer univentionstaff 2021-05-14 16:50:59 CEST
should be still relevant for UCS 4.4