[ovirt-users] Can´t use a VM Network VLAN, because the Virtual Machines inside can't reach the Gateway

Tue Jul 7 03:10:44 UTC 2015

I see the tap interface on the ovirtmgmt bridge which is in the 
192.168.0.0/24 subnet but your vm has a 192.168.50.0/27 address.  I 
don't know why it's attached to that bridge though since it looks like 
you've placed it on the dmz network.  What happens if you change the IP 
address in your test vm to something in 192.168.0.0/24 and then ping 
your 192.168.0.1 gateway?

On 7/6/2015 1:06 PM, Julián Tete wrote:
> Hi Friends of oVirt
>
> This the data required:
>
> I have a HP Enclosure with a HP SAN.
> I can't change the net settings in the switch because we have VMware 
> Virtual Machines in production in the same enclosure.
> The switch is in Trunk Mode and all the traffic are in Tagged VLAN's 
> with ID's: 1,50,90,91 and 100.
> I can play with 6 blades.
> I in the first Blade I installed oVirt in hosted engine mode.
> The only S.O is CentOS 7.1
>
> I used inxi to brig the data for you:
>
> My First Host is the only host until now (SPM) is the first data 
> domain (NFS) and contains the hosted engine machine.
> I installed oVirt with ovirtmgmt in VLAN 1, over the interface eno1, 
> without any VLAN Tagged configuration.
>
> This the data for my first host:
>
> http://pastebin.com/dfC0XTQM
>
> This the data for the Engine:
>
> http://pastebin.com/JdrMSbj0
>
> This the data for the Virtual Machine created in VLAN 50:
>
> S.O : CentOS 7.1
> SELinux: Permissive
> IP ADDRESS: 192.168.50.8
> PREFIX: 27
> GATEWAY: 192.168.50.1
> Interface: eth0
>
> The Virtual Machine hasn´t any VLAN configuration.
>
> In the 3 S.O, Network Manager is stopped and disabled, connectivity is 
> managed by the network daemon.
>
> This is the data for the Networking in the admin interface:
>
> http://postimg.org/image/lbypejxrh/
>
> http://postimg.org/image/jtkyhqs8f/
>
> http://postimg.org/image/7dwf1nb9f/
>
> http://postimg.org/image/6i9t75g33/
>
> http://postimg.org/image/sm8e6lecv/
>
> http://postimg.org/image/cvig7rjuv/
>
> http://postimg.org/image/fxcthsrtl/
>
> http://postimg.org/image/o6xjwwvyz/
>
> http://postimg.org/image/pv5ar5v3j/
>
> http://postimg.org/image/dx8br0gq7/
>
> http://postimg.org/image/baixp4b0j/
>
> This the case
>
> With No IP in the VLAN, and IP in the Virtual Machine, From the 
> Virtual Machine can ping myself (192.168.50.8) but I can't reach the 
> gateway, can't reach the host, can't reach Internet.
>
> Any help is appreciated
>
> Thanks Friends of oVirt
>
>
>
>
>
>
>
>
> 2015-07-06 7:51 GMT-05:00 Soeren Malchow <soeren.malchow at mcon.net 
> <mailto:soeren.malchow at mcon.net>>:
>
>     Hi,
>
>     To make it easier to understand what the situation is, it would
>     help to
>     see your bridging configuration and your interface configration.
>
>     Something like:
>
>     #> ip addr
>
>     And
>
>     #> brctl show
>
>     Regards
>     Soeren
>
>     On 06/07/15 13:30, "users-bounces at ovirt.org
>     <mailto:users-bounces at ovirt.org> on behalf of Dan Kenigsberg"
>     <users-bounces at ovirt.org <mailto:users-bounces at ovirt.org> on
>     behalf of danken at redhat.com <mailto:danken at redhat.com>> wrote:
>
>     >On Tue, Jun 30, 2015 at 03:48:49PM -0500, Julián Tete wrote:
>     >> Hi Friends of oVirt
>     >>
>     >> I'm trying to migrate my company from VMware to oVirt.
>     >
>     >We'd like to help you do this!
>     >
>     >> In my final tests, I set up 2 more VLANs in oVirt, (VM VLANs)
>     >> The Virtual Machines in these VLANs, can be reached from the
>     external
>     >>IPs
>     >> from the net range,
>     >> but from the Virtual machines only can ping the Host with the
>     Bridge and
>     >> itself, can't reach the gateway. ¿?
>     >>
>     >> I configured a IP Forwarding in the Host with the virtual
>     machine, and
>     >> nothing changes...
>     >>
>     >> Any idea ? This is the last duty before embrace oVirt in the
>     company.
>     >>
>     >> Look to the VLAN 100 configuration (My desired VM Network):
>     >>
>     >> http://postimg.org/image/7hrog0a2n/
>     >>
>     >> http://postimg.org/image/68b40i1vr/
>     >>
>     >> http://postimg.org/image/lu6mlshgp/
>     >
>     >I must admit that I don't understand your problem yet. When you ping
>     >from inside your guest, where are your packets dropped?
>     >
>     >I'd like to point that your "Hosting" network, as most VM
>     networks, is
>     >better off left without an IP address. The benefit of this is better
>     >security (host TCP stack is not accessible from VMs) and less
>     chances of
>     >routing collisions from the host.
>     >
>     >So unless you need to use the same network for something other
>     than VM
>     >communication, try to clear its address.
>     >
>     >Regards,
>     >Dan.
>     >_______________________________________________
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>     >Users at ovirt.org <mailto:Users at ovirt.org>
>     >http://lists.ovirt.org/mailman/listinfo/users
>
>
>
>
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