[ovirt-users] Using VDSM to edit management interface

Sun Mar 18 23:00:35 UTC 2018

Hi Peter,
Thanks again for trying to help out on this one.
Unfortunately this sent me right back to where I started.
When you grep for DNS entries the only matching file is
/etc/sysconfig/network-scripts/ifcfg-ovirtmgmt
As per my previous email this file is also generated (by VDSM this time)
and I don't see how to update the VDSM database so that it generates the
file with different entries.
It's turtles all the way down :)

Kirin.

On Fri, Mar 16, 2018 at 5:12 PM, Peter Hudec <phudec at cnc.sk> wrote:

> 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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