[ovirt-users] Network Interface order changed after reboot

[ovirt at timmi.org]

No I just eth0 was configured during OS installation. All other 
interface have been configured through the oVirt GUI.

Best regards
Christoph

Am 26.06.2016 um 16:08 schrieb Edward Haas:

>
>
> On Sun, Jun 26, 2016 at 4:48 PM, <ovirt at timmi.org 
> <mailto:ovirt at timmi.org>> wrote:
>
>     Hi Edy,
>
>     please find some config files below. I did the interface config
>     only through the oVirt GUI.
>
>     I mean by reordering that after every reboot some interfaces are
>     not the same as before. That means I need to change the cables
>     after reboot.
>
>
> This sounds like the problem Didi referenced to.
>
> Before you configured the interfaces through oVirt, wasn't there any 
> ifcfg files?
> (just to understand why you have not seen this before, without vdsm on 
> the host)
>
>
>     [root at lxedna ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0
>     # Generated by VDSM version 4.17.28-1.el7
>     DEVICE=eth0
>     ONBOOT=yes
>     BOOTPROTO=dhcp
>     MTU=1500
>     DEFROUTE=yes
>     NM_CONTROLLED=no
>     IPV6INIT=no
>     [root at lxedna ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth1
>     # Generated by VDSM version 4.17.23-0.el7.centos
>     DEVICE=eth1
>     BRIDGE=Test-LAN-SW1
>     ONBOOT=yes
>     MTU=1500
>     NM_CONTROLLED=no
>     IPV6INIT=no
>     [root at lxedna ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth2
>     # Generated by VDSM version 4.17.23-0.el7.centos
>     DEVICE=eth2
>     BRIDGE=PC-LAN
>     ONBOOT=yes
>     MTU=1500
>     NM_CONTROLLED=no
>     IPV6INIT=no
>
>     Best regards
>     Christoph
>
>
>     Am 26.06.2016 um 14:51 schrieb Edward Haas:
>>
>>
>>     On Thu, Jun 23, 2016 at 3:49 PM, <ovirt at timmi.org
>>     <mailto:ovirt at timmi.org>> wrote:
>>
>>         Hi List,
>>
>>         I have two nodes (running CentOS 7) and the network interface
>>         order changed for some interfaces after every reboot.
>>
>>         The configurations are done through the oVirt GUI. So the
>>         ifcfg-ethX scripts are configured automatically by VDSM.
>>
>>         Is there any option to get this configured to be stable?
>>
>>         Best regards and thank you
>>
>>         Christoph
>>
>>         _______________________________________________
>>         Users mailing list
>>         Users at ovirt.org <mailto:Users at ovirt.org>
>>         http://lists.ovirt.org/mailman/listinfo/users
>>
>>
>>     Hi Christoph,
>>
>>     VDSM indeed edits and takes ownership of the interfaces for the
>>     networks it manages.
>>     However, editing the ifcfg files should not change anything in
>>     the order of the devices, unless it was originally set
>>     in an unsupported fashion. An ifcfg file is bound to a specific
>>     device name and I'm not familiar to device names
>>     floating around randomly.
>>     Perhaps you should elaborate more on what it means by 'order
>>     changed'.
>>
>>     Here is an example of a setup we do not support (pre adding the
>>     host to Engine):
>>     The initial ifcfg file name: ifcfg-eth0
>>     The initial ifcfg file content: DEVICE="eth1"
>>     In this configuration, the name of the ifcfg file is inconsistent
>>     with the name of the device it represents.
>>     VDSM expects them to me in sync.
>>
>>     Please provide the ifcfg files before and after you add the host
>>     to Engine.
>>
>>     Thanks,
>>     Edy.
>>
>
>

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