Proxmox installed but unable to connect to internet

[Nayden]

Hello Everyone.
I do apology if this post is redundant but I check almost all the related issues, and googled for days and still I am unable to find the solution to my problem.

I installed proxmox on a dell poweredge r720. I configured the ip and the gateway according to my network, but when I try to access proxmox from my local network, the connection times out. Initially I thought that this is a general network issue with firewall, but this was not the case, in fact if I try to login to the server directly and run ubuntu command to update and upgrade. The commands fails with error `destination unreachable`.

Doing some research on google and on this forum, many other users solved the same problem by configuring proxmox `/etc/network/interfaces`. And in fact I had some issues there as it was pointing to the wrong gateway and ip. After the correction. My `interfaces` look like this.

auto vmbr0
iface vmbr0 inet static
    address 192.168.1.2
    netmask 255.255.255.0
    gateway 192.168.1.1
    bridge-ports eno1
    bridge-stp off
    bridge-fd 0
    
iface eno2 inet manual
iface eno3 inet manual
iface eno4 inet manual

My server is wired over ethernet port 1.

After this, I made sure to configure the hosts swell with the new ip.


But I am facing still the same issue. Restarted the networking and rebooted the server but nothing. Still unable to connect to internet from the server, or access proxmox web browser from another computer in the same network.

 

[birdy]

What happens if you try config below?

auto lo iface lo inet loopback iface eno1 inet manual auto vmbr0 iface vmbr0 inet static address 192.168.1.2/24 gateway 192.168.1.1 bridge-ports eno1 bridge-stp off bridge-fd 0

 

[Nayden]

What happens if you try config below?

auto lo iface lo inet loopback iface eno1 inet manual auto vmbr0 iface vmbr0 inet static address 192.168.1.2/24 gateway 192.168.1.1 bridge-ports eno1 bridge-stp off bridge-fd 0

Thank you so much for your reply.
I tried to update my interface as you advised, but still getting the same issue.

 

[Nayden]

Thank you so much for your reply.
I tried to update my interface as you advised, but still getting the same issue.

I don't know if this is useful. I tried to run the command dmesg, and in the output I see this message

vmbr0: port 1(eno1) entered blocking state
vmbr0: port 1(eno1) entered disabled state
device eno1 entered promiscuous mode

 

[Nayden]

I don't know if this is useful. I tried to run the command dmesg, and in the output I see this message

vmbr0: port 1(eno1) entered blocking state
vmbr0: port 1(eno1) entered disabled state
device eno1 entered promiscuous mode

Solved!.
I mean honestly I am so embarrassed on explaining what was wrong but I will do it anyway.

The ethernet cable from my router was a bit loose. Not connected properly. I was bored so I went to check the ethernet port in the server and no led was blinking. So I checked the cables and found out the ethernet cable in my router was unplagged.

Thank you so much for your time and help

 

[birdy]

Well we all had our "moments"

But glad it all works now.