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Bug 1533090

Summary:	fix displaying fencing levels
Product:	Red Hat Enterprise Linux 8	Reporter:	Tomas Jelinek <tojeline>
Component:	pcs	Assignee:	Miroslav Lisik <mlisik>
Status:	CLOSED ERRATA	QA Contact:	cluster-qe <cluster-qe>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	8.0	CC:	cluster-maint, idevat, kmalyjur, mlisik, mmazoure, mpospisi, nhostako, omular, svalasti, tojeline
Target Milestone:	rc	Keywords:	Reopened, Triaged
Target Release:	8.6	Flags:	pm-rhel: mirror+
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	pcs-0.10.11-1.el8	Doc Type:	Bug Fix
Doc Text:	Cause: Configured regular expressions are indistinguishable from node names when displaying fencing levels. Consequence: User cannot tell difference between node names and regular expressions when displaying fencing levels. Fix: Output of the `pcs stonith level [config]` command informs if a target is a regexp. Result: Regular expressions and node names are distinguishable when displaying fencing levels.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-05-10 14:50:42 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Tomas Jelinek 2018-01-10 12:59:53 UTC

Description of problem:
Support for specifying targets in fencing levels by regular expressions has been implemented in bz1261116. The problem is that regular expressions are indistinguishable from node names when displaying fencing levels.


Version-Release number of selected component (if applicable):
pcs-0.9.162-2.el7


How reproducible:
always, easily


Steps to Reproduce:
# pcs stonith show
 xvmNode1       (stonith:fence_xvm):    Started rh74-node1
 xvmNode2       (stonith:fence_xvm):    Started rh74-node2
 xvmNode3       (stonith:fence_xvm):    Started rh74-node1
# pcs stonith level add 1 rh74-node1 xvmNode1
# pcs stonith level add 2 "regexp%rh74-node" xvmNode2
# pcs stonith show
 xvmNode1       (stonith:fence_xvm):    Started rh74-node1
 xvmNode2       (stonith:fence_xvm):    Started rh74-node2
 xvmNode3       (stonith:fence_xvm):    Started rh74-node1
 Target: rh74-node1
   Level 1 - xvmNode1
 Target: rh74-node
   Level 2 - xvmNode2


Actual results:
The second target looks like it applies to rh74-node node but in fact it is a regular expression.


Expected results:
Target: regular expression: rh74-node
or similar

Comment 3 RHEL Program Management 2021-02-15 07:34:30 UTC

After evaluating this issue, there are no plans to address it further or fix it in an upcoming release.  Therefore, it is being closed.  If plans change such that this issue will be fixed in an upcoming release, then the bug can be reopened.

Comment 9 RHEL Program Management 2021-09-04 07:26:58 UTC

After evaluating this issue, there are no plans to address it further or fix it in an upcoming release.  Therefore, it is being closed.  If plans change such that this issue will be fixed in an upcoming release, then the bug can be reopened.

Comment 11 Miroslav Lisik 2021-10-07 12:36:17 UTC

Created attachment 1830364 [details]
proposed fix + tests

Updated command:
  * pcs stonith level [config]

Test:
  * configure a stonith level with regex target with command `pcs stonith level add`
  * run `pcs stonith level`, output informs that target is a regexp.

Comment 13 Miroslav Lisik 2021-11-02 09:18:25 UTC

DevTestResults:

[root@r8-node-01 ~]# rpm -q pcs
pcs-0.10.11-1.el8.x86_64

[root@r8-node-01 ~]# pcs stonith
  * fence-scsi  (stonith:fence_scsi):    Started r8-node-01
  * fence-r8-node-01    (stonith:fence_xvm):     Started r8-node-01
  * fence-r8-node-02    (stonith:fence_xvm):     Started r8-node-02
  * fence-r8-node-03    (stonith:fence_xvm):     Started r8-node-03

[root@r8-node-01 ~]# pcs stonith level add 1 r8-node-01 fence-r8-node-01
[root@r8-node-01 ~]# pcs stonith level add 1 r8-node-02 fence-r8-node-02
[root@r8-node-01 ~]# pcs stonith level add 1 r8-node-03 fence-r8-node-03
[root@r8-node-01 ~]# pcs stonith level add 2 regexp%r8-node fence-scsi

[root@r8-node-01 ~]# pcs stonith level
Target: r8-node-01
  Level 1 - fence-r8-node-01
Target: r8-node-02
  Level 1 - fence-r8-node-02
Target: r8-node-03
  Level 1 - fence-r8-node-03
Target (regexp): r8-node
  Level 2 - fence-scsi

Comment 18 svalasti 2022-02-24 14:53:53 UTC

## BEFORE
[root@virt-043 ~]# rpm -q pcs
pcs-0.10.10-4.el8.x86_64
[root@virt-043 ~]# pcs stonith status
  * fence-virt-043	(stonith:fence_xvm):	 Started virt-043
  * fence-virt-044	(stonith:fence_xvm):	 Started virt-044
  * fence-virt-045	(stonith:fence_xvm):	 Started virt-045

[root@virt-043 ~]# pcs stonith level add 1 virt-043 fence-virt-043

[root@virt-043 ~]# pcs stonith level add 2 regexp%virt-04[4-5] fence-virt-044 fence-virt-045

[root@virt-043 ~]# pcs stonith status
  * fence-virt-043	(stonith:fence_xvm):	 Started virt-043
  * fence-virt-044	(stonith:fence_xvm):	 Started virt-044
  * fence-virt-045	(stonith:fence_xvm):	 Started virt-045
 Target: virt-043
   Level 1 - fence-virt-043
 Target: virt-04[4-5]
   Level 2 - fence-virt-044,fence-virt-045

[root@virt-043 ~]# pcs stonith level add 3 regexp%virt-0[3-5]{2} fence-virt-043 fence-virt-044 fence-virt-045

[root@virt-043 ~]# pcs stonith status
  * fence-virt-043	(stonith:fence_xvm):	 Started virt-043
  * fence-virt-044	(stonith:fence_xvm):	 Started virt-044
  * fence-virt-045	(stonith:fence_xvm):	 Started virt-045
 Target: virt-043
   Level 1 - fence-virt-043
 Target: virt-04[4-5]
   Level 2 - fence-virt-044,fence-virt-045
 Target: virt-0[3-5]{2}
   Level 3 - fence-virt-043,fence-virt-044,fence-virt-045

[root@virt-043 ~]# pcs stonith level verify

[root@virt-043 ~]# echo $?
0
> Output does not showing information about usage of reg. expressions.

## 2. Adding fencing level specifying almost the same target (with and without regular expression)
[root@virt-043 ~]# pcs stonith status
  * fence-virt-043	(stonith:fence_xvm):	 Started virt-043
  * fence-virt-044	(stonith:fence_xvm):	 Started virt-044
  * fence-virt-045	(stonith:fence_xvm):	 Started virt-045

[root@virt-043 ~]# pcs stonith level add 1 virt-044 fence-virt-044

[root@virt-043 ~]# pcs stonith level add 1 regexp%virt-044 fence-virt-044

[root@virt-043 ~]# pcs stonith status
  * fence-virt-043	(stonith:fence_xvm):	 Started virt-043
  * fence-virt-044	(stonith:fence_xvm):	 Started virt-044
  * fence-virt-045	(stonith:fence_xvm):	 Started virt-045
 Target: virt-044
   Level 1 - fence-virt-044
 Target: virt-044
   Level 1 - fence-virt-044

[root@virt-043 ~]# pcs stonith level verify

[root@virt-043 ~]# echo $?
0
> Output showing no difference between the fencing level specified by the regular expr. and string.


## AFTER
[root@virt-043 ~]# rpm -q pcs
pcs-0.10.12-6.el8.x86_64
[root@virt-043 ~]# pcs stonith status
  * fence-virt-043	(stonith:fence_xvm):	 Started virt-043
  * fence-virt-044	(stonith:fence_xvm):	 Started virt-044
  * fence-virt-045	(stonith:fence_xvm):	 Started virt-045

[root@virt-043 ~]# pcs stonith level add 1 virt-043 fence-virt-043

[root@virt-043 ~]# pcs stonith level add 2 regexp%virt-04[4-5] fence-virt-044 fence-virt-045

[root@virt-043 ~]# pcs stonith status
  * fence-virt-043	(stonith:fence_xvm):	 Started virt-043
  * fence-virt-044	(stonith:fence_xvm):	 Started virt-044
  * fence-virt-045	(stonith:fence_xvm):	 Started virt-045
 Target: virt-043
   Level 1 - fence-virt-043
 Target (regexp): virt-04[4-5]
   Level 2 - fence-virt-044,fence-virt-045

[root@virt-043 ~]# pcs stonith level add 3 regexp%virt-0[3-5]{2} fence-virt-043 fence-virt-044 fence-virt-045

[root@virt-043 ~]# pcs stonith status
  * fence-virt-043	(stonith:fence_xvm):	 Started virt-043
  * fence-virt-044	(stonith:fence_xvm):	 Started virt-044
  * fence-virt-045	(stonith:fence_xvm):	 Started virt-045
 Target: virt-043
   Level 1 - fence-virt-043
 Target (regexp): virt-04[4-5]
   Level 2 - fence-virt-044,fence-virt-045
 Target (regexp): virt-0[3-5]{2}
   Level 3 - fence-virt-043,fence-virt-044,fence-virt-045

[root@virt-043 ~]# pcs stonith level verify

[root@virt-043 ~]# echo $?
0

# Removing fencing level
[root@virt-043 ~]# pcs stonith level remove 3 target regexp%virt-0[3-5]{2}

[root@virt-043 ~]# pcs stonith level remove 2 target regexp%virt-04[4-5]

[root@virt-043 ~]# pcs stonith level remove 1 target virt-043

[root@virt-043 ~]# pcs stonith status
  * fence-virt-043	(stonith:fence_xvm):	 Started virt-043
  * fence-virt-044	(stonith:fence_xvm):	 Started virt-044
  * fence-virt-045	(stonith:fence_xvm):	 Started virt-045
> OK.
## 2. Adding fencing level specifying almost the same target (with and without regular expression)
 [root@virt-043 ~]# pcs stonith status
  * fence-virt-043	(stonith:fence_xvm):	 Started virt-043
  * fence-virt-044	(stonith:fence_xvm):	 Started virt-044
  * fence-virt-045	(stonith:fence_xvm):	 Started virt-045

[root@virt-043 ~]# pcs stonith level add 1 virt-044 fence-virt-044

[root@virt-043 ~]# pcs stonith level add 1 regexp%virt-044 fence-virt-044

[root@virt-043 ~]# pcs stonith status
  * fence-virt-043	(stonith:fence_xvm):	 Started virt-043
  * fence-virt-044	(stonith:fence_xvm):	 Started virt-044
  * fence-virt-045	(stonith:fence_xvm):	 Started virt-045
 Target: virt-044
   Level 1 - fence-virt-044
 Target (regexp): virt-044
   Level 1 - fence-virt-044

> Fencing targets are now distinguishable.

[root@virt-043 ~]# pcs stonith level verify

[root@virt-043 ~]# echo $?
0
[root@virt-043 ~]# pcs stonith level remove 1 target virt-044

[root@virt-043 ~]# pcs stonith level remove 1 target regexp%virt-044

[root@virt-043 ~]# pcs stonith status
  * fence-virt-043	(stonith:fence_xvm):	 Started virt-043
  * fence-virt-044	(stonith:fence_xvm):	 Started virt-044
  * fence-virt-045	(stonith:fence_xvm):	 Started virt-045

> OK.

Comment 20 errata-xmlrpc 2022-05-10 14:50:42 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/RHEA-2022:1978