Proxmox and Advance Server OVH

[kennysamuerto]

Hi,

I'm here to see if you can help me out. I'm using an OVH Advance-4 server, which doesn't have the capability to generate virtual MACs. I found this guide to activate the VMs:

https://support.us.ovhcloud.com/hc/...work-on-Proxmox-VE-with-ADVANCE-Gen-3-Servers

And I've followed it on my Proxmox server. Let me share the details. First, in a VRACK, I've added both the server (with IP 79.137.xxx.48) and the block of 4 IPs that I have.

This is my IP block (4 IPs):

Network IP: 46.105.xxx.44
Gateway IP: 46.105.xxx.46 (not usable)
Broadcast IP: 46.105.xxx.47

So, the first thing I did was edit the file

/etc/iproute2/rt_tables

And I added:

1 vrack

At the bottom. Then, I went to my

/etc/network/interfaces

file and edited it like this:

auto lo
iface lo inet loopback


iface enp10s0f0np0 inet manual


auto vmbr0
iface vmbr0 inet static
        address 79.137.xxx.48/32
        gateway 100.xx.0.1
        bridge-ports enp10s0f0np0
        bridge-stp off
#       bridge-fd 0
        hwaddress 04:7C:XX:XX:02:2C


iface vmbr0 inet6 static
        address 2001:41d0:XXX:3000::/56
        gateway feXX::1


auto vmbr1
iface vmbr1 inet static
    address 46.105.XXX.45/30
    gateway 46.105.XXX.46
    broadcast 46.105.XXX.47
    bridge-ports enp10s0f1np1
    bridge-stp off
    bridge-fd 0
post-up ip route add 46.105.XXX.44/30 dev vmbr1 table vrack
post-up ip route add default via 46.105.XXX.46 dev vmbr1 table vrack
post-up ip rule add from 46.105.XXX.44/30 table rack
post-up rule add to 46.105.XXX.44/30 table rack

I create the virtual machine, like Debian for example, and assign the new network I created (vmbr1) to it, then I start the machine configuring the network like this:

IP: 46.105.xxx.45
Gateway: 46.105.xxx.46
Mask: 255.255.255.252

I start the machine, it pings, and has internet access.

But mysteriously, the node loses internet access and becomes unreachable.

I don't understand what's happening, but the IP of the virtual machine also pings even when the virtual machine is not running. If I start it, it works fine and the VM runs without problems, but whether I start it or not, I lose connectivity to the main machine (the node). What could be going on?

 

[_gabriel]

not experience here, but afaik, set public ip and the route in the vm not on the vmbr1.

auto vmbr1
iface vmbr1 inet manual
        bridge-ports enp10s0f1np1 
        bridge-stp off
        bridge-fd 0