Unable To Access Proxmox GUI but can still access LXC and VMs

[ketchupacket]

Hi everyone,

Admittedly, I don't know a whole lot about Proxmox, but I set up Proxmox about a year ago and it's been working smoothly until recently. I had to shut down my server due to a blackout. After turning it back on, I've been running into an issue where the Proxmox GUI will stop being accessible through the browser after a couple of days. I will get an ERR_EMPTY_RESPONSE when trying to access the GUI through Chrome (I am using https). I am also unable to access through FTP.

I also tried to curl the IP but I get the following:

• curl --insecure https://IP:8006/
  
  curl: (56) schannel: server closed abruptly (missing close_notify)

It will become accessible again after power cycling, but I assume this is not a great method and will eventually end up causing more issues.

The weird thing is I can access all the LXCs and VMs that I set up through their internal IPs even while the Proxmox GUI is inaccessible. Has anyone run into this issue before? Any help or advice would be appreciated. Thank you!

 

[abobakr]

Hi,
Proxmox uses a service called [0] pveproxy to serve the web GUI. If this crashes, the GUI will be inaccessible.
Once the problem re-occur please check and provide:

• Check the status of pveproxy:
  ~# systemctl status pveproxy
  • Try restarting it without rebooting the host:
    ~# systemctl restart pveproxy
    If this brings the gui back, it confirms the proxy was the issue.
• Check and provide the log during the problem time:
  ~# journalctl --since $SINCE --until $UNTIL > /tmp/$(hostname)-syslog.txt
• Might be something is interfering with the GUI port. Make sure nothing else is using port `8006`:
  

  ~#  ss -tulpen | grep 8006
  tcp   LISTEN 0      4096   *:8006   *:*  users:(("pveproxy worker",pid=...

  
  
• [1] Confirm your Proxmox server’s IP address hasn’t changed and isn't conflicting with another device.

[0] https://pve.proxmox.com/pve-docs/pveproxy.8.html
[1] https://forum.proxmox.com/threads/cannot-access-web-interface.147084/