Bug 112273

Summary:	dhclient overwrites ntp.conf
Product:	[Retired] Red Hat Linux	Reporter:	Bart Martens <bart.martens>
Component:	dhcp	Assignee:	Daniel Walsh <dwalsh>
Status:	CLOSED ERRATA	QA Contact:	David Lawrence <dkl>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	9
Target Milestone:	---
Target Release:	---
Hardware:	i386
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2003-12-17 12:01:24 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Bart Martens 2003-12-16 23:02:49 UTC

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Description of problem:
When dhclient retrieves an ntp server from the dhcp server, then
/sbin/dhclient-script overwrites /etc/ntp.conf instead of modifying
/etc/ntp.conf or adding the ntp server to /etc/ntp.conf.

Also the sysadmin should be able to turn off any modifications to
/etc/ntp.conf with a variable in
/etc/sysconfig/network-scripts/ifcfg-eth0, similar to PEERDNS=no for
not modifying /etc/resolv.conf.


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


How reproducible:
Always

Steps to Reproduce:
Server: dhcp server including one or more ntp servers in the reply.
Client:
- ntp up and running, with /etc/ntp.conf manually edited
- dhclient fetching ip address and ntp servers from the dhcp server


Actual Results:  The file /etc/ntp.conf is overwritten.


Expected Results:  The file /etc/ntp.conf should be modified, either
by adding the new ntp servers, or by replacing the ntp servers.

The sysadmin should have an option, similar to PEERDNS for
/etc/resolv.conf, to turn of any modifications to /etc/ntp.conf.


Additional info:

Workaround: modify /sbin/dhclient-script to no longer modify ntp.conf.

Solution: modify /sbin/dhclient-script to support PEERNTP similar to
PEERDNS.

Comment 1 Bart Martens 2003-12-16 23:10:56 UTC

Changed component to "dhcp".

Comment 2 Daniel Walsh 2003-12-17 12:01:24 UTC

dhcp-3_0pl2-6_16 has support for PEERNTP.

Dan

Comment 3 John Flanagan 2004-12-21 19:42:07 UTC

An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHBA-2004-566.html