[one-users] ping between VMs on different hosts ?

[Valerio Schiavoni]

Hello Justin,

On Wed, Apr 25, 2012 at 1:22 PM, Justin Cinkelj <justin.cinkelj at xlab.si>wrote:

>  Hi
> Can you connect to the kvm virtual console with virtviewer (e.g., not with
> sunstone)?
>

Yes, I managed to connect to the KVM virtual console with virtviewer.
>From the controller machine, I did:

virt-viewer -c qemu+ssh://newcluster-0/system one-55


Doing so, I discovered which IP the VM was assigned (for some reasons,
192.168.0.110/16) and I could ssh into it from the host.
The VM was configured to execute the vmcontext.sh script, but apparently
this is not working correctly. The content of /etc/network/interfaces gets
modified correctly, as I see there:

auto eth0
iface eth0 inet static
  address 10.0.0.1
  network 10.0.0.0
  netmask 255.255.255.0
  gateway 10.0.0.1

(originally, it  is dhcp). NEvertheless, once the VM initializes its
networking services, it sets eth0 to:

$ifconfig
eth0      Link encap:Ethernet  HWaddr 02:00:0a:00:00:01
          inet addr:192.168.0.110  Bcast:192.168.255.255  Mask:255.255.0.0
          inet6 addr: fe80::aff:fe00:1/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:585 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1389 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:49880 (49.8 KB)  TX bytes:117184 (117.1 KB)
          Interrupt:10 Base address:0xe000



To avoid further confusions due to my questions, I'd like to ask if there
are 'restrictions' to respect when creating Virtual Networks.
Do the addresses must be in the same class as the bridged interface ?

Thanks a lot for your support!

valerio
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