Questions about KVM routing

ct_tx

Hello,

I am running a Solus VM slave setup to serve KVM containers. The server currently has 5 IP addresses allocated to it (say 192.168.1.1-192.168.1.5 with a gateway of 192.168.1.1). I requested more IP addresses from my provider and I was allocated a range in a different subnet (say 10.0.0.1 to 10.0.0.10 with a gateway of 10.0.0.1). When I initially setup the machine, I configured a bridge br0 linked to eth0 and configured to work with my 192.xxx subnet. My questions is: how do I use the new set of IP addresses (i.e. 10.xxx subnet) that were allocated to me? Is it even possible?

Here is a copy of my ifcfg-br0 (with original IP addresses replaced with 192..)

DEVICE=br0
TYPE=Bridge
BOOTPROTO=static
BROADCAST=192.168.1.255
GATEWAY=192.168.1.1
IPADDR=192.168.1.2 # this machine
NETMASK=255.255.255.0
NETWORK=192.168.1.0
ONBOOT=yes

The question is - is there a way to incorporate the new subnet (10.0.0.X) to this so it works with Solus?

Thanks very much!

ct_tx

Also, does OpenVZ generally play better with such circumstances?

MarkTurner

Depending on who the provider is and how the IPs are setup.

But you should be able to add the IPs to an alias on br0 eg br0:0

shyaminayesh

once your provider route the subnet to your server, you only need to add IP's to solusvm no need to change br0

Sady

As MarkTuner said, it depends on how provider routed those.

At GVH (ColoCrossing) here are my configurations files :

# cat /etc/sysconfig/network-scripts/ifcfg-br0

DEVICE=br0

TYPE=Bridge

BOOTPROTO=static

DNS1=8.8.8.8

IPADDR=108...194

GATEWAY=108...193

NETMASK=255.255.255.240

ONBOOT=yes



# cat /etc/sysconfig/network-scripts/ifcfg-br0:0

DEVICE=br0

TYPE=Bridge

BOOTPROTO=static

DNS1=8.8.8.8

IPADDR=72...74

GATEWAY=72...73

NETMASK=255.255.255.248

ONBOOT=yes

ct_tx

Thank you all for those helpful tips. I was able to get it working as you all suggested by simply adding a bridge alias. Sady - your snippets were most useful. Mark - thanks once again for your help with everything. I really appreciate the service you all do on this forum.