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Bug 1416170

Summary:	[RFE] Modify kickstart templates to update the /etc/hosts and /etc/resolv.conf
Product:	Red Hat Satellite	Reporter:	Peter Tselios <tselios.petros>
Component:	Provisioning Templates	Assignee:	Marek Hulan <mhulan>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	6.2.6	CC:	jcallaha, lzap, mhulan, tselios.petros
Target Milestone:	Unspecified	Keywords:	FutureFeature
Target Release:	Unused
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2018-09-04 19:15:13 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 Peter Tselios 2017-01-24 18:26:21 UTC

Description of problem:
Default kicstart finish templates are not updating the /etc/hosts and /etc/resolv.conf files. This creates additional useless effort to configure the host later via puppet or any other configuration management tool.

Version-Release number of selected component (if applicable):
6.2.x

How reproducible:
100%

Steps to Reproduce:
1. Provision a new host with static IPs
2. Check if the /etc/hosts file contains the hostname and the IP of the new server (it's not)
3. Check if the /etc/resolv.conf is populated.

Actual results:


Expected results:
/etc/hosts should be updated with the IP, hostname and short hostname of the new server if the IP is static.
/etc/resolv.conf should contain the DNS servers set during provisioning time. 

Foreman has all the necessary information to do so, and there is no reason to write custom snippets to do that.

Comment 1 Marek Hulan 2017-02-15 09:08:10 UTC

Created redmine issue http://projects.theforeman.org/issues/18509 from this bug

Comment 2 Marek Hulan 2017-02-15 09:47:19 UTC

I think updating /etc/hosts makes sense. I'm not sure about the resolv.conf. This is usually updated by network manager, so as long as the ifcfg-eth0 (or whatever interface file) has DNS1 set, it should be reflected when "service network restart" is called. This seems to work fine for me on el7. If that does not work in your case, could you please upload your ifcfg file or the finish template that is used to configure the host? Feel free to clean any sensitive information such as IP addresses.

Comment 3 Satellite Program 2017-02-17 15:17:02 UTC

Upstream bug assigned to mhulan

Comment 4 Satellite Program 2017-02-17 15:17:05 UTC

Upstream bug assigned to mhulan

Comment 5 Peter Tselios 2017-03-07 06:36:48 UTC

When I use static IPs, /etc/resolve.conf is updated correctly. 
So, let's focus on the /etc/hosts update.

Comment 6 Bryan Kearney 2018-09-04 19:02:20 UTC

Thank you for your interest in Satellite 6. We have evaluated this request, and we do not expect this to be implemented in the product in the foreseeable future. We are therefore closing this out as WONTFIX. If you have any concerns about this, please feel free to contact Rich Jerrido or Bryan Kearney. Thank you.

Comment 7 Bryan Kearney 2018-09-04 19:15:13 UTC

Thank you for your interest in Satellite 6. We have evaluated this request, and we do not expect this to be implemented in the product in the foreseeable future. We are therefore closing this out as WONTFIX. If you have any concerns about this, please feel free to contact Rich Jerrido or Bryan Kearney. Thank you.

Comment 8 Lukas Zapletal 2020-02-28 12:38:49 UTC

It is assumed that hosts managed by Foreman have proper DNS, therefore no changes of `/etc/hosts` is necessary. Some users tend to manage hosts file entries instead of DNS, then configuration management should be used. However, feel free to send a patch to Foreman templates to do this during provisioning, but only as opt-in via parameter. By default, we do not want to change what OS installers set.

File `/etc/resolv.conf` is managed by NetworkManager from CentOS 6, there is no need of changing it directly. Nameservers must be set in ifcfg setting (DNS1, DNS2) or interactively via NetworkManager CLI, TUI or applet.