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Bug 1975347 - RFE Request method to disable NetworkManager "hostname-mode" which sets the hostname based on DNS results
Summary: RFE Request method to disable NetworkManager "hostname-mode" which sets the h...
Keywords:
Status: CLOSED DUPLICATE of bug 1975349
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: anaconda
Version: 8.4
Hardware: All
OS: All
unspecified
high
Target Milestone: beta
: ---
Assignee: Anaconda Maintenance Team
QA Contact: Release Test Team
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-06-23 13:29 UTC by jcastran
Modified: 2021-06-30 19:22 UTC (History)
0 users

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2021-06-30 19:22:33 UTC
Type: Bug
Target Upstream Version:
Embargoed:
pm-rhel: mirror+

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System ID Private Priority Status Summary Last Updated
Red Hat Bugzilla 1766944 1 medium CLOSED Hostname not configured through reverse-DNS query 2023-06-04 08:56:30 UTC

Description jcastran 2021-06-23 13:29:49 UTC 
* Description of problem:
Anaconda will set the hostname of a system based on DNS. If no entires are found it will set it to localhost.

There is no way to stop this behaviour. 


* Steps to Reproduce:
1. set hostname in kickstart with "network --hostname=<blah>"
2. boot installation with ip=dhcp and inst.ks=http://X.X.X.X/ks.cfg
3.

* Actual results:
NetworkManager will set the hostname based on DNS results and not the kickstart

Jun 21 14:28:10 test.net NetworkManager[1747]: <info>  [1624285690.4197] policy: set-hostname: current hostname was changed outside NetworkManager: 'test.net'
Jun 21 14:28:10 test.net NetworkManager[1747]: <info>  [1624285690.4198] policy: set-hostname: set hostname to 'localhost' (from address lookup)



* Expected results:
Preferably we should be able to either disable this feature of NetworkManager.

Or if a hostname is set to something other than localhost, NetworkManager should not overwrite that.


* Additional info:
This was discussed in Bug 1766944. Opening the request for these options.

https://bugzilla.redhat.com/show_bug.cgi?id=1766944#c20

This could be eventually done by installer boot option (something like inst.nm.hostname.only-from-default). As a global modification of installer environment this does not seem to belong to kickstart.
Also it would apply only to devices/connections configured by kickstart after switch root (NM activating connections in initramfs would be unaffected in this respect).
Comment 2 jcastran 2021-06-30 19:22:33 UTC 

*** This bug has been marked as a duplicate of bug 1975349 ***
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