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Bug 2099653 - [WebUI] Unable to stop a cluster node when quorum would be lost
Summary: [WebUI] Unable to stop a cluster node when quorum would be lost
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 9
Classification: Red Hat
Component: pcs
Version: 9.0
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: rc
: 9.2
Assignee: Ivan Devat
QA Contact: cluster-qe@redhat.com
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2022-06-21 12:26 UTC by Tomas Jelinek
Modified: 2023-05-09 07:39 UTC (History)
8 users (show)

Fixed In Version: pcs-0.11.4-1.el9
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2023-05-09 07:18:23 UTC
Type: Bug
Target Upstream Version:
Embargoed:
pm-rhel: mirror+

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Issue Tracker CLUSTERQE-6163 0 None None None 2022-11-11 20:35:37 UTC
Red Hat Issue Tracker RHELPLAN-125833 0 None None None 2022-06-21 12:34:35 UTC
Red Hat Product Errata RHBA-2023:2151 0 None None None 2023-05-09 07:18:47 UTC

Description Tomas Jelinek 2022-06-21 12:26:28 UTC 
Description of problem:
The new web UI doesn't allow to stop cluster nodes if '--force' is required. This usually happens when stopping the node would cause loss of the quorum. As a consequence, it is not possible to stop all cluster nodes using the new web UI, as that always results in losing the quorum.


Version-Release number of selected component (if applicable):
pcs-0.11.2-1.el9


How reproducible:
always, easily


Steps to Reproduce:
1. Run a cluster in such state that stopping one node would cause loss of the quorum. The easiest is to run a one-node cluster.
2. Log in to web UI and try stopping a running node of the cluster.


Actual results:
Task: stop node rh90-node1" failed
Error: Stopping the node will cause a loss of the quorum, use --force to override
Details in the browser console.


Expected results:
Display a dialog with the received error message: "Stopping the node will cause a loss of the quorum". Ask the user if they want to proceed. If confirmed, stop the cluster node.
Comment 1 Ivan Devat 2022-11-09 11:52:58 UTC 
https://github.com/ClusterLabs/pcs-web-ui/commit/16b307a5327738790375978fd2a234f2fcfe2369
Comment 2 Michal Pospisil 2022-11-24 12:18:44 UTC 
DevTestResults:

1. Clicking on “Stop” in the node detail of the only node from a single-node cluster.
2. “Stop Node?” modal window is displayed. Clicking on “Stop”.
3. “Node stop failed” modal window is displayed. Modal text: “Task: stop node "r09-02-a.vm" failed: Error: Stopping the node will cause a loss of the quorum . Details in the browser console. The error can be overridden.” Clicking on “Proceed anyway”.
4. “Node successfully stopped” modal window is displayed.
Comment 7 svalasti 2023-01-25 13:24:11 UTC 
[root@virt-023 ~]# rpm -q pcs
pcs-0.11.4-4.el9.x86_64

Only a basic check of this implemented feature has been performed. Our priority at the moment is to automate the tasks that are possible by using the GUI.
After moving to the "Nodes" tab and clicking the "Stop" button, a modal window is displayed to the user. Then, after confirming that the user actually wants to stop the node, the user is notified that the stopping node task failed and that stopping the node will cause the loss of quorum.
In this case, the user has the option to cancel node stop or "proceed anyway".
If the user chooses to "proceed anyway", the node is successfully stopped.

> Marking as VERIFIED SanityOnly for pcs-0.11.4-4.el9
Comment 9 errata-xmlrpc 2023-05-09 07:18:23 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (pcs bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2023:2151
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