PVE in 2 subnets with 1 NIC?

[Kiwiana]

Hi, I'm new to Proxmox and don't have that much Linux experience...

I have an intel NUC which is running Proxmox VE. It has the IP address 192.168.3.52. Then I have a NAS with the IP address 192.168.1.10.
I wanted to create a new PVE disk which is network share on the NAS. This failed so far and I tried to ping the NAS in the PVE shell which never gets an answer.

However, I created a qemu virtual machine which works fine (Home Assistant) which has an IP in the 192.168.3.x range but can also access the NAS. So, something is missing in my PVE network I assume but I couldn't figure out what.

Right now the PVE network has these entries:
eno1 - Network Device
vmbr0 - Linux Bridge, 192.168.3.52/24, Gateway 192.168.3.1, Bridge ports: eno1
vmbr1 - Linux Bridge, 192.168.1.52/24 (this was my try but I still can't ping the NAS - which does reply pings)

Help would be appreciated, I searched the forum but only found slightly different questions (mostly about the hosts)

 

[2707974]

Hi, I'm new to Proxmox and don't have that much Linux experience...

I have an intel NUC which is running Proxmox VE. It has the IP address 192.168.3.52. Then I have a NAS with the IP address 192.168.1.10.
I wanted to create a new PVE disk which is network share on the NAS. This failed so far and I tried to ping the NAS in the PVE shell which never gets an answer.

However, I created a qemu virtual machine which works fine (Home Assistant) which has an IP in the 192.168.3.x range but can also access the NAS. So, something is missing in my PVE network I assume but I couldn't figure out what.

Right now the PVE network has these entries:
eno1 - Network Device
vmbr0 - Linux Bridge, 192.168.3.52/24, Gateway 192.168.3.1, Bridge ports: eno1
vmbr1 - Linux Bridge, 192.168.1.52/24 (this was my try but I still can't ping the NAS - which does reply pings)

Help would be appreciated, I searched the forum but only found slightly different questions (mostly about the hosts)

I'm not sure that I understand your topology
How is NAS connected with PVE node?
I mean on physical connection. You have one switch and in one port is PVE on second is NAS or ?

 

[Kiwiana]

Yes, they're all plugged into a switch (Netgear GS716T).

 

[2707974]

Yes, they're all plugged into a switch (Netgear GS716T).

Can you please share your /etc/network/interface configuration for PVE

 

[bobmc]

To route between networks you generally need a router. Is there a reason why the proxmox host can't be on the same network as the NAS?

Is there actually a device at 192.168.3.1 or is that just what you have defined as the gateway for that network?

Are vmbr0 or vmbr1 associated with eno1?

 

[bobmc]

auto lo iface lo inet loopback auto eno1 #real IP address iface eno1 inet static address 192.168.1.52 netmask 255.255.255.0 gateway 192.168.1.1 auto vmbr0 #private sub network iface vmbr0 inet static address 192.168.3.52 netmask 255.255.255.0 bridge-ports none bridge-stp off bridge-fd 0 post-up echo 1 > /proc/sys/net/ipv4/ip_forward post-up iptables -t nat -A POSTROUTING -s '192.168.3.0/24' -o eno1 -j MASQUERADE post-down iptables -t nat -D POSTROUTING -s '192.168.3.0/24' -o eno1 -j MASQUERADE

from https://pve.proxmox.com/wiki/Network_Configuration

 

[Kiwiana]

auto lo iface lo inet loopback auto eno1 #real IP address iface eno1 inet static address 192.168.1.52 netmask 255.255.255.0 gateway 192.168.1.1 auto vmbr0 #private sub network iface vmbr0 inet static address 192.168.3.52 netmask 255.255.255.0 bridge-ports none bridge-stp off bridge-fd 0 post-up echo 1 > /proc/sys/net/ipv4/ip_forward post-up iptables -t nat -A POSTROUTING -s '192.168.3.0/24' -o eno1 -j MASQUERADE post-down iptables -t nat -D POSTROUTING -s '192.168.3.0/24' -o eno1 -j MASQUERADE

from https://pve.proxmox.com/wiki/Network_Configuration

Thanks for that. I edited the interfaces file directly but it seems to have reverted to what's defined in the PVE GUI. in the interfaces is a note to utilize 'source' or 'source-directory', do i have to make use of that?

 

[Kiwiana]

Yeah, something didn't work, the PVE was not available anymore after applying the settings (couldn't reach the GUI from my PC anymore on 192.168.1.52 nor 192.168.3.52 (old) )

However, I restored the original network settings, cleaned up some router settings and now everything seems to work.