[ovirt-users] Using VDSM to edit management interface

Fri Mar 16 06:12:40 UTC 2018

Remove any settings about dns from the network manager adn the
/etc/resolv.conf won't be auto generated.

https://ma.ttias.be/centos-7-networkmanager-keeps-overwriting-etcresolv-conf/

	Peter

On 16/03/2018 02:15, Kirin van der Veer wrote:
> Ďakujem Peter, but this doesn't seem to work in my case. 
> /etc/resolv.conf is regenerated by Network Manager after a reboot
> and my domain settings are lost. Your comments regarding the
> reliance on DNS make sense for most installations, but in my case
> oVirt is a secondary service that I would not expect to run unless
> our core infrastructure is working correctly. I'm hesitant to edit
> /etc/hosts directly, since that can lead to confusion when the
> underlying IP addresses change. For now I will hardcode the IPs of
> my servers. It's frustrating (and surprising) that there is not an
> easy way to do this.
> 
> Kirin.
> 
> On Thu, Mar 15, 2018 at 5:17 PM, Peter Hudec <phudec at cnc.sk 
> <mailto:phudec at cnc.sk>> wrote:
> 
> Hi Kirin,
> 
> I suggest to do it old way and edit the /etc/resolv.conf manually.
> 
> And one advice. Do not relay on the DNS on infrastructure servers.
> Use /etc/hosts. If he DNS will not be accessible, you will have
> problem to put it infrastructure up/working. As side effect the
> hosts allow you to use short names to access servers.
> 
> If you are ansible positive, you could use
> 
> hudecof.resolv  https://galaxy.ansible.com/hudecof/resolv/ 
> <https://galaxy.ansible.com/hudecof/resolv/> hudecof.hosts
> https://galaxy.ansible.com/hudecof/hosts/ 
> <https://galaxy.ansible.com/hudecof/hosts/>
> 
> 
> Peter
> 
> On 15/03/2018 06:03, Kirin van der Veer wrote:
>> Hi oVirt people, I have setup a new cluster consisting of many 
>> oVirt Nodes with a single dedicated oVirt Engine machine. For
>> the most part things are working, however despite entering the
>> DNS search domain during install on the Nodes the management
>> interface is not aware of my search domain and it has not been
>> added to /etc/resolv.conf (perhaps that is unnecessary?). I
>> eventually worked out that the DNS search domain should be
>> included in /etc/sysconfig/network-scripts/ifcfg-ovirtmgmt
>> However as per the header/warning, that file is generated by
>> VDSM. I assumed that I should be able to edit the search domain
>> with vdsClient, but when I run "vdsClient -m" I don't see any
>> options related to network config. I found the following page on
>> DNS config:
>> 
> https://www.ovirt.org/develop/release-management/features/network/allowExplicitDnsConfiguration/
>
> 
<https://www.ovirt.org/develop/release-management/features/network/allowExplicitDnsConfiguration/>
>> 
>> 
> But it does not seem to offer a way of specifying the DNS search
> domain
>> (other than perhaps directly editing /etc/resolv.conf - which is 
>> generated/managed by Network Manager). nmcli reports that all of
>> my interfaces (including ovirtmgmt) are "unmanaged". Indeed when
>> I attempt to run nmtui there is nothing listed to configure.
>> This should be really simple! I just want to add my local search
>> domain so I can use the short name for my NFS server. I'd
>> appreciate any advice.
>> 
>> Thanks in advance, Kirin.
>> 
>> 
>> .
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