Web Interface Not Working After Adding VMBR3

I

IceProx

New Member
Dec 20, 2015
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Hello All,

I am setting up a new Proxmox server and just installed this fresh a week ago. The install went fine and I have the following version:

Code: 
Kernel Version: Linux 4.15.18-1-pve #1 SMP PVE 4.15.18-17 (Mon, 30 Jul 2018 12:53:35 +0200)
PVE Manager Version: pve-manager/5.2-6/bcd5f008

My existing VMs use 3 different bridges (3 different networks) connected to 3 different physical ports/cards.

Code: 
vmbr0 ==> eno1 ==> 10.1.0.0 Network
vmbr1 ==> enp10s0f0 ==> 10.2.0.0 Network
vmbr2 ==> eno2 ==> 10.10.0.0 Network (iSCSI)
vmbr3 ==> enp10s0f1 ==> 192.168.1.0 Network

Initially with only default vmbr0 with static IP 10.1.0.120, everything worked fine. As I added the extra bridges, it worked until I added vmbr3. Once vmbr3 was added, I cannot connect to the web interface. I had to login at the console and modify the interfaces file to remove vmbr3 settings and then reboot. At that time the web interface would work again.

I added this new server to my cluster without issue and am able to see and control it via another server when the new server's web interface is not working.

This exact same configuration has been working for years on different hardware.

I have been reading for the past 4 days and cannot find anything that points a finger to my problem.

Any suggestions would be greatly welcomed.

Thanks,
IceProx
 
Also to note, if I remove vmbr3 then the web interface works again until I add vmbr3.

Thanks,
IceProx
 
After playing some more, I found more information.

The server is on 10.1.0.120 (Subnet Mask 255.255.255.0) and my computer trying to connect and administer is on 192.168.1.200 (Subnet Mask 255.255.255.0). After adding VMBR3, Proxmox is blocking add requests from IPs outside of 10.1.0.XXX. If I VPN into 10.1.0.XXX, I can connect to the web interface and SSH.

I have stopped the firewall but still doesn't work. I have another Proxmox server on the same network and it works fine. The routes on both are the same, so are hostname and hosts (different IPs).

If I delete VMBR3 then all goes back to normal and works fine.

Any ideas?

Thanks,
IceProx
 
Still can't get this to work. If I VPN in it works but not without. Also cannot see the rest of the 192.168.1.XXX network from the VM running on this host, only the outside world. If I migrate the VM to another host in the same subnet it works fine.

Any ideas?

Thanks,
IceProx
 
Could you please post your '/etc/network/interfaces'? and the output of 'ip addr' and 'ip route' ?
 
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