[one-users] SSH to VM subnetwork problem

[Ruben S. Montero]

Hi

The VM networking is correctly setup, as you can "ping each other". If you
want to access the VMs from the outside you need a NIC attached to that
network and a IP in the network. You can either create and interface alias,
or a tun device with a valid ip, attach it to the bridge, and then you
should be able to send packages to the vnet.

This configuration is not the standard one, though. You will probably want
to assign a public IP or place a virtual router with a public IP to log in
the VMs.


Ruben




On Sat, May 4, 2013 at 9:11 PM, Giuliano Casale <g.casale at imperial.ac.uk>wrote:

> Hi all,
>
> I have a working installation of OpenNebula 3.8.3, but despite many
> efforts I still cannot ssh from the host into the VMs.
>
> All hosts have:
> - an eth0 interface listening to the internal network of my institution
> - an eth1 interface for a private switched LAN only between the hosts
> that compose the OpenNebula cloud. The hosts have IPs 10.0.0.X on this
> network.
>
> On all the machines I have run the following commands:
>
> brctl addbr br1
> brctl addif br1 eth1
> ifconfig eth1 down
> ifconfig eth1 0.0.0.0 up
> ifconfig br1 10.0.0.X/24 up    (where X=1,2,... depending on the host).
>
> I then defined in Sunstone a virtual network as follows:
> =============
> ID             : 0
> NAME           : vn-private
> USER           : oneadmin
> GROUP          : oneadmin
> CLUSTER        : cluster
> TYPE           : RANGED
> BRIDGE         : br1
> VLAN           : No
> PHYSICAL DEVICE:
> VLAN ID        :
> USED LEASES    : 2
>
> PERMISSIONS
> OWNER          : um-
> GROUP          : ---
> OTHER          : ---
>
> VIRTUAL NETWORK TEMPLATE
>
>
> RANGE
> IP_START       : 192.168.100.1
> IP_END         : 192.168.100.128
>
> USED LEASES
> LEASE=[ IP="192.168.100.13", MAC="02:00:c0:a8:64:0d", USED="1", VID="14" ]
> LEASE=[ IP="192.168.100.37", MAC="02:00:c0:a8:64:25", USED="1", VID="41" ]
> =============
>
> Now: using VNC, I see that the two VMs .13 and .37 can correctly ping
> each other.However, if I login to any host and do 'ssh
> root at 192.168.100.13' it does not connect to the VMs.
>
> I tried then 'route add -net 192.168.100.0 netmask 255.255.255.0 dev
> br1' and 'route' shows correctly
>
> Destination     Gateway         Genmask         Flags Metric Ref    Use
> Iface
> 192.168.100.0   *               255.255.255.0   U     0      0        0 br1
>
> but still ssh does not work.
>
> Can someone help me? My ultimate goals are:
> 1) to be able to ssh from the host into the VMs.
> 2) if possible, give internet connectivity to the VMs through eth0.
>
> Thanks,
> Giuliano
> _______________________________________________
> Users mailing list
> Users at lists.opennebula.org
> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>



-- 
Ruben S. Montero, PhD
Project co-Lead and Chief Architect
OpenNebula - The Open Source Solution for Data Center Virtualization
www.OpenNebula.org | rsmontero at opennebula.org | @OpenNebula
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