Public bug reported:
[ Impact ]
* Older versions of Masakari are lacking a proper mechanism to prevent
concurrent record inserts into the database, resulting duplicated
event processing that can potentially lead to disastrous outcomes.
* Affected versios include:
- Focal/Ussuri 9.0.0-0ubuntu0.20.04.5 / 9.0.0-0ubuntu0.20.04.5~cloud0 (UCA)
- Jammy/Yoga 13.0.0-0ubuntu1 / 13.0.0-0ubuntu1~cloud0 (UCA)
- Jammy/Caracal 17.0.0-0ubuntu1 / 17.0.0-0ubuntu1~cloud0 (UCA)
- Noble 17.0.0-0ubuntu1
- Resolute 21.0.0~rc1-0ubuntu1 (Proposed)
* This is a known issue and reported by many users also presented in
LP#2028450.
* This requires an HA Masakari deployment without a coordinator
configured.
* None of the current Charmed Masakari deployments support using a
coordinator and are all affected.
[ Test Plan ]
* Juju bundles will be crafted and attached to this SRU bug to make
reproducer deployments easier. The plan is to cover all affected
versions. Detailed instructions will be provided.
* The LP#2028450 bug includes a reproducer script (2), which is handy
to reproduce the issue as well as validate the fix.
* The reproducer script simulates concurrent insertion situations
using OpenStack CLI.
[ Where problems could occur ]
* The nature if this change is very simple. In the HA API, the
create notification function will be modified to introduce an
artificial pause, significantly reducing the chance of
concurrent insertion if event records in database.
This will only be invoked if coordination back-end is not
configured. Please see (3) for more details:
if not CONF.coordination.backend_url:
time.sleep(random.uniform(1, 5))
* The probable risk here is a delay between 1-5 seconds during
event creation and further processing.
[ Other Info ]
* There is currently an effort to merge this change upstream (4).
(1) https://bugs.launchpad.net/masakari/+bug/2028450
(2) https://launchpadlibrarian.net/849768758/lp2028450-reproducer.bash
(3)
https://review.opendev.org/c/openstack/masakari/+/978343/3/masakari/ha/api.py
(4) https://review.opendev.org/c/openstack/masakari/+/978343
** Affects: masakari
Importance: Undecided
Assignee: Alan Baghumian (alanbach)
Status: In Progress
** Affects: masakari (Ubuntu)
Importance: High
Assignee: Alan Baghumian (alanbach)
Status: In Progress
** Affects: masakari (Ubuntu Focal)
Importance: High
Assignee: Alan Baghumian (alanbach)
Status: In Progress
** Affects: masakari (Ubuntu Jammy)
Importance: High
Assignee: Alan Baghumian (alanbach)
Status: In Progress
** Affects: masakari (Ubuntu Noble)
Importance: High
Assignee: Alan Baghumian (alanbach)
Status: In Progress
** Affects: masakari (Ubuntu Resolute)
Importance: High
Assignee: Alan Baghumian (alanbach)
Status: In Progress
** Changed in: masakari
Assignee: (unassigned) => Alan Baghumian (alanbach)
** Changed in: masakari
Status: New => In Progress
** Also affects: masakari (Ubuntu)
Importance: Undecided
Status: New
** Also affects: masakari (Ubuntu Resolute)
Importance: Undecided
Status: New
** Also affects: masakari (Ubuntu Focal)
Importance: Undecided
Status: New
** Also affects: masakari (Ubuntu Jammy)
Importance: Undecided
Status: New
** Also affects: masakari (Ubuntu Noble)
Importance: Undecided
Status: New
** Changed in: masakari (Ubuntu Focal)
Assignee: (unassigned) => Alan Baghumian (alanbach)
** Changed in: masakari (Ubuntu Jammy)
Assignee: (unassigned) => Alan Baghumian (alanbach)
** Changed in: masakari (Ubuntu Noble)
Assignee: (unassigned) => Alan Baghumian (alanbach)
** Changed in: masakari (Ubuntu Resolute)
Assignee: (unassigned) => Alan Baghumian (alanbach)
** Changed in: masakari (Ubuntu Focal)
Status: New => In Progress
** Changed in: masakari (Ubuntu Jammy)
Status: New => In Progress
** Changed in: masakari (Ubuntu Noble)
Status: New => In Progress
** Changed in: masakari (Ubuntu Resolute)
Status: New => In Progress
** Changed in: masakari (Ubuntu Focal)
Importance: Undecided => High
** Changed in: masakari (Ubuntu Jammy)
Importance: Undecided => High
** Changed in: masakari (Ubuntu Noble)
Importance: Undecided => High
** Changed in: masakari (Ubuntu Resolute)
Importance: Undecided => High
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https://bugs.launchpad.net/bugs/2146964
Title:
[SRU] Prevent masakari HA from creating duplicated notifications
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