Proxmox GUI does'nt show interfaces from /etc/network/interfaces

[Yanux]

Hi !

I'm working on installing and configure some proxmox homeservers using Ansible.
I have 2 playbooks :
First install Promox over Debian
Second set-up networks by writing in /etc/network/interfaces

Between playbooks, Proxmox GUI show correctly some networks.
After the second playbook and a reboot, network screen is empty.

Created networks works fine, but I ca'nt use them for proxmox cluster or VM.
ifreload -a show no errors

I do'nt now why Proxmox do'tn see them, or how update GUI screen...
Thanks if you have an idea !


/etc/network/interfaces :

# network interface settings; autogenerated
# Please do NOT modify this file directly, unless you know what
# you're doing.
#
# If you want to manage parts of the network configuration manually,
# please utilize the 'source' or 'source-directory' directives to do
# so.
# PVE will preserve these directives, but will NOT read its network
# configuration from sourced files, so do not attempt to move any of
# the PVE managed interfaces into external files!

# BEGIN CONFIGURATION OF lo
auto lo
iface lo inet loopback
# END CONFIGURATION OF lo
# BEGIN CONFIGURATION OF enp11s0
auto enp11s0
iface enp11s0 inet manual
# END CONFIGURATION OF enp11s0
# BEGIN CONFIGURATION OF enp9s0
auto enp9s0
iface enp9s0 inet manual
# END CONFIGURATION OF enp9s0
# BEGIN CONFIGURATION OF vmbr0
auto vmbr0
iface vmbr0 inet static
        hwaddress 70:85:c2:88:a3:a7
        address 192.168.1.50/24
        gateway 192.168.1.254
        dns-nameservers 127.0.0.1 192.168.1.254 8.8.8.8
        bridge-ports enp11s0
        bridge-stp off
        bridge-fd 0
#INTERNET
# END CONFIGURATION OF vmbr0
# BEGIN CONFIGURATION OF vmbr1
auto vmbr1
iface vmbr1 inet static
        hwaddress 00:8e:25:79:01:ae
        address 10.0.10.10/24

        bridge-ports enp9s0
        bridge-stp off
        bridge-fd 0
#SAN
# END CONFIGURATION OF vmbr1

ip -a :

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: enp9s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master vmbr1 state UP group default qlen 1000
    link/ether 00:8e:25:79:01:ae brd ff:ff:ff:ff:ff:ff
3: enp11s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master vmbr0 state UP group default qlen 1000
    link/ether 70:85:c2:88:a3:a7 brd ff:ff:ff:ff:ff:ff
4: vmbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 70:85:c2:88:a3:a7 brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.50/24 scope global vmbr0
       valid_lft forever preferred_lft forever
    inet6 fe80::7285:c2ff:fe88:a3a7/64 scope link
       valid_lft forever preferred_lft forever
5: vmbr1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 00:8e:25:79:01:ae brd ff:ff:ff:ff:ff:ff
    inet 10.0.10.10/24 scope global vmbr1
       valid_lft forever preferred_lft forever
    inet6 fe80::28e:25ff:fe79:1ae/64 scope link
       valid_lft forever preferred_lft forever

 

[oguz]

hi,

what are the file permissions of /etc/network/interfaces? could you check with ls -l /etc/network/interfaces ?

normally it should look like this:

$ ls -l /etc/network/interfaces
-rw-r--r-- 1 root root 850 Jul  6  2021 /etc/network/interfaces

if you see something else other than -rw-r--r-- and root root for the owners, try the following:

chown root.root /etc/network/interfaces
chmod 644 /etc/network/interfaces

and refresh the web gui.

hope this helps!