Bug 287228

Summary:	sys-kernel/vserver-sources-2.3.0.36.14-r1: 'hostname in VMs changes hostname globally
Product:	Gentoo Linux	Reporter:	Manuel Nickschas <sputnick>
Component:	[OLD] Server	Assignee:	Thilo Bangert (RETIRED) (RETIRED) <bangert>
Status:	RESOLVED INVALID
Severity:	normal	CC:	hollow
Priority:	High
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---

Description Manuel Nickschas 2009-10-01 12:45:47 UTC

Since upgrading to vserver-sources-2.3.0.36.14-r1 (from 2.3.0.35.6), the hostname seems to be global for all VMs and the host machine. This means that setting/changing the hostname in any VM will affect all other VMs as well as the host machine. This makes the whole setup mostly unusable.

Going back to the older kernel fixes the problem again, so it's definitely kernel-related.

Reproducible: Always

Steps to Reproduce:
1. Start a VM with vserver-sources-2.3.0.36.14
2. Inside the VM, run 'hostname abcd.example.net'
3. Exit the VM, check 'hostname' on the host machine

Actual Results:  
The host machine will now display 'abcd.example.net'.

Expected Results:  
Changing the hostname in any VM shouldn't affect others, much less the host machine.

Comment 1 Benedikt Böhm (RETIRED) gentoo-dev

2009-10-03 15:36:28 UTC

you need util-vserver-0.30.216_pre* for proper namespace support in newer kernels