[SOLVED] Problems with PVE webapp no longer being accesible

B

Balthazar_03

New Member
Jun 4, 2025
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Something I've done has made the web UI inaccesible.
I can still ping, and access the server's via SSH, but cannot access the webUI of it.

What I remember doing was trying to update the server, for which I made the mistake of doing apt upgrade, not apt dist-upgrade.

Beyond this I've got a cluster with two nodes (makes it easier to work on both), and I'm trying to switch the IP I'm working with to a different LAN (going from 192.168.0.0 to a private 10.0.0.0)


What I remember is I was trying to prep as much as I could to make the switch as easy as possible, but still left everything functional. Found an update button somewhere in the web-ui, and pressed it. After that my secondary node became unresponsive to the cluster and I could no longer access its web UI.
I then thought it might be an issue with the software being out-of-date and tried updating the primary node. Now I can no longer access either via web-ui.

I may be a little slow to react, due to only having access to the server post 18:00 cest, but I'll try and give any additional information that is needed.
If anyone can help, it'd be much appreciated 'cause I'm at my wits end with this.
 
Hi @Balthazar_03 , welcome to the forum.

When you get a chance, please review threads similar to your situation. They contain asks from the community that help create a full picture (actual data output from the system). It would be great if you can aggregate that and provide along with your question.

V

Thread 'Can't log in to web interface'

So all of the sudden out of the blue, my Proxmox 7 VE installation just showed no status for anything in the web interface. All machines seemed to be running as I could access them through their IPs and I could access Proxmox just fine through ssh. But the web interface had no connection (everything had question marks next to it, status wouldn't load, etc.)

I logged in through ssh and apt update and apt dist-upgrade. At that point it got even weirder. Now the web interface loads and shows me the login dialog. However, when I enter username and password and click "login", it does nothing...
R

Thread 'Proxmox Network issues - WebUi unreachable, if i add static, the VM and LXC's cannot reach the internet'

Hi All,
I have had proxmox running for a while without issues on a dell optiplex 7070. recently the server has started playing up.

I am running version 8.4.1.

My Config:
Code: 
auto lo
iface lo inet loopback

iface eno1 inet manual

auto vmbr0
iface vmbr0 inet static
    address 192.168.1.22/24
    gateway 192.168.1.1
    bridge-ports eno1
    bridge-stp off
    bridge-fd 0


this is my hosts file:
Code: 
127.0.0.1 localhost.localdomain localhost
192.168.1.22 proxmox.test.network proxmox

# The following lines are desirable for IPv6 capable hosts

::1 ip6-localhost ip6-loopback
fe00::0...
C

Thread 'Cant open WEB UI'

Good day all,

I cant access the web ui of my proxmox server.
Command : pveversion -v
Output: proxmox-ve: 7.2-1 (running kernel: 5.15.30-2-pve)
pve-manager 7.2-3 (running version: 7.2-3/c743d6c1)
pve-kernel-helper: 7.2-2
pve-kernel-5.15: 7.2-1
pve-kernel-5.15.30-2-pve: 5.15.30-3
followed by alot of other packages e.g corosysnc, ceph-fuse etc

Command : curl https://my-pve-ip:8006/ -k | grep title
Output:

Command : systemctl status pveproxy.service
Output:
Command: systemctl start pveproxy
Output...
U

Thread 'WEB GUI not works'

Hi to all, i'm going crazy: maybe because i've make a mistake installing webmin in the same partition of proxmox or because i've update my proxmox ve, my proxmox web gui doesn't works. ufw is not installet

- when i try to connect to my web gui 192.168.1.240:8006 ----> i receive ERR_CONNECTION_TIMED_OUT
- when i try to connecto to my web gui localhost:8006 or nainas:8006 ----> i receive ERR_CONNECTION_REFUSED


cat /etc/hosts
Code: 
127.0.0.1 localhost.localdomain localhost
192.168.1.240 nainas.local naccinas

# The following lines are desirable for IPv6 capable hosts...
etc

Also, please note that having 2-node cluster is not supported and is a recipe for access loss during maintenance. If you plug "two node cluster" into the forum search you will find a lot of information about this.

Good luck

Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox
 
bbgeek17 said:
Hi @Balthazar_03 , welcome to the forum.

When you get a chance, please review threads similar to your situation. They contain asks from the community that help create a full picture (actual data output from the system). It would be great if you can aggregate that and provide along with your question.

V

Thread 'Can't log in to web interface'

So all of the sudden out of the blue, my Proxmox 7 VE installation just showed no status for anything in the web interface. All machines seemed to be running as I could access them through their IPs and I could access Proxmox just fine through ssh. But the web interface had no connection (everything had question marks next to it, status wouldn't load, etc.)

I logged in through ssh and apt update and apt dist-upgrade. At that point it got even weirder. Now the web interface loads and shows me the login dialog. However, when I enter username and password and click "login", it does nothing...
R

Thread 'Proxmox Network issues - WebUi unreachable, if i add static, the VM and LXC's cannot reach the internet'

Hi All,
I have had proxmox running for a while without issues on a dell optiplex 7070. recently the server has started playing up.

I am running version 8.4.1.

My Config:
Code: 
auto lo
iface lo inet loopback

iface eno1 inet manual

auto vmbr0
iface vmbr0 inet static
    address 192.168.1.22/24
    gateway 192.168.1.1
    bridge-ports eno1
    bridge-stp off
    bridge-fd 0


this is my hosts file:
Code: 
127.0.0.1 localhost.localdomain localhost
192.168.1.22 proxmox.test.network proxmox

# The following lines are desirable for IPv6 capable hosts

::1 ip6-localhost ip6-loopback
fe00::0...
C

Thread 'Cant open WEB UI'

Good day all,

I cant access the web ui of my proxmox server.
Command : pveversion -v
Output: proxmox-ve: 7.2-1 (running kernel: 5.15.30-2-pve)
pve-manager 7.2-3 (running version: 7.2-3/c743d6c1)
pve-kernel-helper: 7.2-2
pve-kernel-5.15: 7.2-1
pve-kernel-5.15.30-2-pve: 5.15.30-3
followed by alot of other packages e.g corosysnc, ceph-fuse etc

Command : curl https://my-pve-ip:8006/ -k | grep title
Output:

Command : systemctl status pveproxy.service
Output:
Command: systemctl start pveproxy
Output...
U

Thread 'WEB GUI not works'

Hi to all, i'm going crazy: maybe because i've make a mistake installing webmin in the same partition of proxmox or because i've update my proxmox ve, my proxmox web gui doesn't works. ufw is not installet

- when i try to connect to my web gui 192.168.1.240:8006 ----> i receive ERR_CONNECTION_TIMED_OUT
- when i try to connecto to my web gui localhost:8006 or nainas:8006 ----> i receive ERR_CONNECTION_REFUSED


cat /etc/hosts
Code: 
127.0.0.1 localhost.localdomain localhost
192.168.1.240 nainas.local naccinas

# The following lines are desirable for IPv6 capable hosts...
etc

Also, please note that having 2-node cluster is not supported and is a recipe for access loss during maintenance. If you plug "two node cluster" into the forum search you will find a lot of information about this.

Good luck

Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox
Click to expand...

Thank you for linking these forums!
The actual links and quick answer is very much appreciated <3

I'll look through them when I get the chance.

Again, thanks for the quick answer and guidance!
 
To recap and close this question.
Today (10/06/2025) I had the time and energy to try and fix this.
Like was said by bbgeek17, having a 2-node cluster is a BAD idea.

In my case it caused issues with the pmxcfs process.
From what I understand of ChatGPT's filtering (just ignore the AI. I'm not happy with it, but there's too much information and my brain can't handle or filter it all, and this is the best solution for that.) the pve-cluster service tried to get a lock on the proxmox config, but there was already one (a broken one) meaning it couldn't get it, meaning /etc/pve remained empty and inaccessible.
This then had the effect of the server remaining accesible, but the webui being broken.

To fix it I read what pmxcfs processes were running,
ps aux | grep pmxcfs
Click to expand...
killed them,
pkill -9 pmxcfs
Click to expand...
And then restarted the cluster
systemctl start pve-cluster
Click to expand...

With my other (I think so far unmentioned) server that was running into the same issues, I also removed the cluster in it's entirety.
Something I did somewhere already removed the first from it, so I just had to remove the remnants of the cluster from the secondary server.
systemctl stop pve-cluster corosync
Click to expand...
rm -r /etc/pve/corosync.conf
rm -r /etc/corosync/*
rm -r /var/lib/pve-cluster/*
Click to expand...
systemctl restart pve-cluster
Click to expand...
systemctl status pve-cluster
Click to expand...
After this I just had to restore my Vm's and everything was working again.
 
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