Problem connecting proxmox to internet

[rafafell]

I'm having trouble on my network. I believe that the configuration in proxmox is correct, but the real machine (proxmox 5) does not connect in the internet. I've tried something and it did not work, any suggestions?

/etc/network/interfaces looks like this:

source /etc/network/interfaces.d/*

auto lo
iface lo inet loopback

allow-hotplug enp5s0

iface enp5s0 inet dhcp

auto vmbr0
iface vmbr0 inet static
address XXX.XXX.XXX.XXX
netmask 255.255.255.224
gateway XXX.XXX.XXX.XXX
bridge_ports enp5s0
bridge_stp off
bridge_fd 0



when I give an "ifconfig" the inet e inet6 of the enp5s0 does not appear (in the node that is connecting in the internet the inet appears)

# ifconfig
enp5s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
ether yy:yy:yy:yy:yy:yy txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Loopback Local)
RX packets 663 bytes 1554619 (1.4 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 663 bytes 1554619 (1.4 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

vmbr0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet xxx.xxx.xxx.xxx netmask 255.255.255.224 broadcast xxx.xxx.xxx.xxx
ether 60:a4:4c:cf:30:5c txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 6 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0


ifconfig of node pve with internet access

enp3s0: flags = 4163 <UP, BROADCAST, RUNNING, MULTICAST> mtu 1500
inet XXX.XXX.XXX.XXX netmask 255.255.255.224 broadcast XXX.XXX.XXX.XXX
ether YY: YY: YY: YY: YY: YY txqueuelen 1000 (Ethernet)
RX packets 483511114 bytes 366634404065 (341.4 GiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 455663037 bytes 235085647458 (218.9 GiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

lo: flags = 73 <UP, LOOPBACK, RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 :: 1 prefixlen 128 scopeid 0x10 <host>
loop txqueuelen 1000 (Loopback Local)
RX packets 7147882 bytes 4889254583 (4.5 GiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 7147882 bytes 4889254583 (4.5 GiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0


vmbr0: flags = 4163 <UP, BROADCAST, RUNNING, MULTICAST> mtu 1500
inet XXX.XXX.XXX.XXX netmask 255.255.255.224 broadcast XXX.XXX.XXX.XXX
inet6 xxxx :: xxxx: xxxx: xxxx: xxxx prefixlen 64 scopeid 0x20 <link>
ether YY: YY: YY: YY: YY: YY txqueuelen 1000 (Ethernet)
RX packets 200876893 bytes 70822022214 (65.9 GiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 184910695 bytes 89001793484 (82.8 GiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

 

[Hollis]

iface enp5s0 inet dhcp - set static IP first

 

[rafafell]

iface enp5s0 inet dhcp - set static IP first

Hello Hollis, where would you put this line?It would be like this?


auto lo
iface lo inet loopback

allow-hotplug enp5s0

iface enp5s0 inet dhcp -set static iP first

[...]

Could you tell me why on one machine it works and another one that was working stopped working?

 

[Hollis]

Server is at home LAN or in any hosting?

Any firewall on Proxmox server?

 

[rafafell]

It is in a university lab with fixed (real) ip. Yes, we have a firewall.

The Node pve came back!

thanks

 

[Hollis]

try with disabled firewall on Proxmox server

 

[Hollis]

ufw is easy on single server, but on proxmox look to https://gist.github.com/kimus/9315140