On Tue, Oct 29, 2019 at 11:00 AM Martin Perina <[email protected]> wrote:

>
>
> On Tue, Oct 29, 2019 at 10:00 AM Dominik Holler <[email protected]>
> wrote:
>
>>
>>
>> On Tue, Oct 29, 2019 at 9:35 AM Galit Rosenthal <[email protected]>
>> wrote:
>>
>>> Hi Dominik,
>>>
>>> Any updates on this?
>>>
>>>
>> Looks like my suspicion is right.
>> The mapping between the IPv6 addresses of ovirtmgmt and the IPv6
>> addresses, which are configured to be resolved to hostnames, do not match
>> in OST.
>> One way would be to disable the resolution to IPv6 at all.
>> Another way would be to fix the mapping.
>>
>
> Wouldn't it be better to fix the mapping to be more aligned with real
> world scenarios?
>

AFAIK that wouldn't that easy. Getting DNS with lago and IPv6 to work might
be tricky. For example he-ipv6 uses "hacks" with /etc/hosts to achieve
connectivity over IPv6 only.


>
>>
>>
>>> Regards,
>>> Galit
>>>
>>> On Fri, Oct 25, 2019 at 5:34 PM Dominik Holler <[email protected]>
>>> wrote:
>>>
>>>> On Fri, Oct 25, 2019 at 3:08 PM Milan Zamazal <[email protected]>
>>>> wrote:
>>>>
>>>>> Hi, I looked at the failing migrations in OST on el8, when running
>>>>> basic-suite-master with https://gerrit.ovirt.org/#/c/103888/31.  The
>>>>> migration fails even before started, when Vdsm tries to talk to the
>>>>> remote Vdsm and can't reach it.  Indeed, there seems to be a networking
>>>>> problem between the hosts:
>>>>>
>>>>>   [root@lago-basic-suite-master-host-1 ~]# ping -c 1
>>>>> lago-basic-suite-master-host-0
>>>>>   PING
>>>>> lago-basic-suite-master-host-0(lago-basic-suite-master-host-0.lago.local
>>>>> (fd8f:1391:3a82:201::c0a8:c902)) 56 data bytes
>>>>>   From lago-basic-suite-master-host-1 (fd8f:1391:3a82:200::c0a8:c899):
>>>>> icmp_seq=1 Destination unreachable: Address unreachable
>>>>>
>>>>>
>>>> Maybe it is related that the default IP version is flipped from IPv4 in
>>>> CentOS7 to IPv6 in CentOS8.
>>>> This means that if IPv6 is enabled in the dns, it is required to be
>>>> enabled on the source and destination host.
>>>> I will have a detailed look.
>>>>
>>>>
>>>>> Regards,
>>>>> Milan
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>>>>>
>>>>
>>>
>>> --
>>>
>>> GALIT ROSENTHAL
>>>
>>> SOFTWARE ENGINEER
>>>
>>> Red Hat
>>>
>>> <https://www.redhat.com/>
>>>
>>> [email protected]    T: 972-9-7692230
>>> <https://red.ht/sig>
>>>
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>>
>
>
> --
> Martin Perina
> Manager, Software Engineering
> Red Hat Czech s.r.o.
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-- 

Ales Musil

Associate Software Engineer - RHV Network

Red Hat EMEA <https://www.redhat.com>

[email protected]    IM: amusil
<https://red.ht/sig>
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