On Fri, Jul 9, 2021 at 9:26 AM Lionel Caignec <caig...@cines.fr> wrote:

> Hi,
>
> i've just tried to update my sandboxing environmnent after long time
> without update (i know it's bad...) and i'm facing a problem with multiple
> gateway.
> This environment work with 6 hypervisors (centos 8) and one manager on
> dedicated server, all this baremetal have 2 interface in 2 différent
> network protected by firewall.
> All my hypervisords have 2 network for ovirt, one "ovirtmgmt" for
> management (only SSH and internal admin stuff), the other "ovir_prod" for
> console, migration, and default gateway.
>
> I've 3 hypervisors non updated which i can ping /ssh / ... (according to
> iptables) on the two interface without problem.
> But the 3 hypervisors just updated are accessible only on the "ovirt_prod"
> interface. I'm looking inside ip route/ ip rules it seems to miss something.
> I always configured my HV by ovirt gui so i does not understand what going
> wrong.
>
> This is ip route/ip rules of my hv, it's like missing ip rules on non
> working HV
> The "route-ovirt_prod" file that does not exist on old HV.
>
> Working HV (centos 8.3 / vdsm 4.20.26.3-1) :
>     [root@drogo ~]# ip ru
>     0:  from all lookup local
>     32000:      from 10.100.126.0/24 lookup 174358038
>     32000:      from all to 10.100.126.0/24 iif ovirtmgmt lookup 174358038
>     32000:      from 10.5.7.0/24 lookup 168101654
>     32000:      from all to 10.5.7.0/24 iif comte_prod lookup 168101654
>     32766:      from all lookup main
>     32767:      from all lookup default
>
>     [root@drogo ~]# ip rou
>     default via 10.5.7.254 dev comte_prod proto static metric 425
>     10.5.7.0/24 dev comte_prod proto kernel scope link src 10.5.7.22
> metric 425
>     10.100.126.0/24 dev ovirtmgmt proto kernel scope link src
> 10.100.126.22 metric 426
>
> Bugged HV (centos 8.4/ vdsm 4.40.70.6-1)
>     [root@balbo ~]# ip ru
>     0:  from all lookup local
>     32766:      from all lookup main
>     32767:      from all lookup default
>
>     [root@balbo ~]# ip rou
>     default via 10.5.7.254 dev comte_prod proto static metric 425
>     10.5.6.0/26 dev enp4s0f1 proto kernel scope link src 10.5.6.6 metric
> 100 linkdown
>     10.5.7.0/24 dev comte_prod proto kernel scope link src 10.5.7.25
> metric 426
>     10.100.126.0/24 dev ovirtmgmt proto kernel scope link src
> 10.100.126.25 metric 425
>
>     [root@bingo network-scripts]# cat route-ovirt_prod
>     ADDRESS0=0.0.0.0
>     NETMASK0=0.0.0.0
>     GATEWAY0=10.5.7.254
>     OPTIONS0="table 254"
>     METRIC0=431
>
>
>
> Than you for help :)
>
> --
> Lionel Caignec
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Hi,

from the vdsm version it seems that the upgrade was from 4.2 to 4.4.7.
Direct upgrade like that
is not supported. There were a lot of changes 4.4 networking among other
changes which might result
in what you are experiencing.

Please take a look at upgrade path from 4.2 to 4.4 in
https://www.ovirt.org/documentation/upgrade_guide/index.html

Thanks,
Ales

-- 

Ales Musil

Software Engineer - RHV Network

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

amu...@redhat.com    IM: amusil
<https://red.ht/sig>
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