Bug 1894156

Summary:	TCP healthchecks failing falsely / not actually checking
Product:	Red Hat Enterprise Linux 8	Reporter:	Luboš Uhliarik <luhliari>
Component:	httpd	Assignee:	Luboš Uhliarik <luhliari>
Status:	CLOSED NOTABUG	QA Contact:	RHEL Stacks Subsystem QE <rhel-stacks-subsystem-qe>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	8.4	CC:	bnater, hokuda, jorton, luhliari
Target Milestone:	rc
Target Release:	8.4
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:	1607737	Environment:
Last Closed:	2020-11-03 23:29:16 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:
Bug Depends On:	1607737
Bug Blocks:

Comment 2 Luboš Uhliarik 2020-11-03 23:29:16 UTC

In the end I found out, this issue has been fixed upstream in httpd 2.4.35. Packets are not send to the backend server because of SELinux settings in RHEL-8:

[Tue Nov 03 12:02:28.623717 2020] [proxy:error] [pid 30419:tid 140260253030144] (13)Permission denied: AH00957: HCTCP: attempt to connect to 10.4.204.55:80 (redhat.com) failed
[Tue Nov 03 12:02:28.623737 2020] [proxy:debug] [pid 30419:tid 140260253030144] proxy_util.c(2327): AH00943: HCTCP: has released connection for (redhat.com)
[Tue Nov 03 12:02:28.623746 2020] [proxy_hcheck:debug] [pid 30419:tid 140260253030144] mod_proxy_hcheck.c(581): AH03251: Health check TCP Status (-1) for 5638751a0d90.

I will adjust the test -> closing as NOTABUG.