9:37 a.m.
On Wed, Jul 22, 2020 at 5:34 PM Florian Schmid via Users
<users(a)ovirt.org> wrote:
Hi,
after digging a bit deeper, it looks like it is the problem with the qemu-guest-agent.
It does only report the hostname and nothing more. It uses this function: g_get_host_name
()
This function always returns the value in /etc/hostname and this is normally the short
name of the VM without the domain part.
It looks like, that the ovirt-guest-agent made this different,
Indeed, and from checking the git log, it seems like it did this since
the very first commit - already then,
ovirt-guest-agent/GuestAgentLinux2.py had:
def getMachineName(self):
return socket.getfqdn()
but this is not working anymore with python 3.
If in "this" you refer to ovirt-guest-agent, then it's deprecated:
https://bugzilla.redhat.com/show_bug.cgi?id=1672732
There was a recent patch for qga ->
https://bugzilla.redhat.com/show_bug.cgi?id=1845127
This bug seems to discuss something else, not directly related to your
own issue.
but this won't help me, because even when this patch would add
the FQDN to oVirt back, there won't be a package for this for Ubuntu 20.04 and
probably also not for RedHat/CentOS 8.
Not sure what you mean here. The bug is on qga, and fixing it (or your
own issue) is unrelated to oga's deprecation.
Your issue seems to be, to me:
1. oga used to report the FQDN, as returned by python's socket.getfqdn()
2. qga returns something else (and this something else might be
changed, following above bug, but likely not to what you want).
3. oVirt now uses qga instead of oga, thus changing its past behavior.
4. You want the old behavior back - basically, claiming this is a regression.
If so, then:
1. You are welcome to open a bug about this, on qga.
2. Your request *might* be rejected, on the ground of breaking
compatibility for existing/old users of qga (say, using virt-manager
or whatever other virt tool, without oga installed)
Alternatively, or if this bug is rejected, you can open two new bugs:
1. one on qga, to provide the fqdn (using, hopefully, logic similar to
python's getfqdn, although qga is written in C)
2. other on the oVirt engine, to use this new functionality of qga
instead of the existing one.
You also have another alternative - just adapt your machines to have
the fqdn as the hostname. I personally think this is the best way to
go. Have 'hostname' return the FQDN you want, and only use 'hostname
-s' where you really want it to be short. How do you set the hostnames
of your machines?
Best regards,
BR Florian
________________________________
Von: "users" <users(a)ovirt.org>
An: "Sandro Bonazzola" <sbonazzo(a)redhat.com>
CC: "users" <users(a)ovirt.org>
Gesendet: Montag, 20. Juli 2020 09:06:30
Betreff: [ovirt-users] Re: qemu-guest-agent on Ubuntu doesn't report FQDN
Hi,
when setting hostnamectl set-hostname "FQDN", then engine will report the real
and correct "FQDN", but this is not a good fix.
With our older Debian and Ubuntu VMs, it is working correctly, although hostname is only
reporting the short hostname. hostname -f is reporting here the correct FQDN.
BR Florian
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________________________________
Von: "Sandro Bonazzola" <sbonazzo(a)redhat.com>
An: "Florian Schmid" <fschmid(a)ubimet.com>, "Tomas Golembiovsky"
<tgolembi(a)redhat.com>
CC: "users" <users(a)ovirt.org>
Gesendet: Freitag, 17. Juli 2020 09:21:37
Betreff: Re: [ovirt-users] qemu-guest-agent on Ubuntu doesn't report FQDN
Il giorno gio 16 lug 2020 alle ore 15:55 Florian Schmid via Users <users(a)ovirt.org>
ha scritto:
>
> Hi,
>
> I have a problem with Ubuntu 20.04 VM reporting the correct FQDN to the engine.
> Starting with this release, the ovirt-guest-agent is not available anymore.
>
> Therefore, I have installed qemu-geust-agent with package defaults.
>
> Now in the Engine, I only see the hostname under FQDN tab, instead the real full name
with domain.
>
> I'm running an oVirt environment on 4.3.8.
>
> The VM is resolveable, forward and reverse DNS entries are working.
> hostname -f shows the correct FQDN.
>
> Even adding IP and FQDN to /etc/hosts file doesn't change anything.
>
> qemu-guest-agent version: 4.2-3ubuntu6.3
>
> I manage this VM via ansible 2.9 and ansible is able to get the FQDN of the VM
without any issues...
>
> What can I do here to debug my issue?
> Does the engine cache the wrong result? Even after stopping and starting the VM
again, engine is only showing the hostname instead of the FQDN.
>
+Tomas Golembiovsky can you help here?
>
> Best regards,
> Florian
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