Web console freezes and forever stops working on that LXC container ID if too much text is pasted in.

[Chess]

I pasted a huge amount of text into the web console (xterm.js) for LXC container ID 201 by mistake, a huge log's worth of data. This caused the web console to freeze up. Now, no matter what I do, I cannot access the web console for this container anymore. It connects properly, then sits on a black screen with the white box (as if I can type) on the top left. This box is not blinking:

• Rebooting the container and restarting the web console does not fix it.
• The web console for all other containers is continuing to work fine.
• I can still access the container through the "lxc-attach --name 201" command on the host, and there doesn't appear to be anything wrong here.
• I tried every Console mode (tty, console, shell) in the Proxmox settings for this container, nothing worked.
• noVNC has the same output.
• I tried pressing Control - ALT - F1, and every similar combination I can think of.
• When this happened in the past, rebooting the entire Proxmox host fixed it.
• I cloned the container to ID 202, and the web console for ID 202 works. I then deleted ID 201, and cloned 202 over to 201...and the 201 web console still doesn't show any output.

I presume there's some cache or other such file/setting on the Proxmox host, that's specifically tied to ID 201, which I can manually clear when this happens. Anyone have any idea where that might be?

 

[Chess]

Some points I forgot:

• Hitting enter doesn't give me any prompts or login screen. It stays on the black screen.
• I had this happen once while in a screen session (screen -S superman). I was able to fix it by exiting the screen session (Control - A - D).
• When pasting the text, it's going directly on the bash prompt.

 

[rolisr]

I just had the same problem when pasting the text broke the LXC console access via proxmox web.

pve-manager/7.4-16/0f39f621

 

[dmemsm]

I too just ran into this issue, I was able to resolve it by restarting the pvedaemon service on the Proxmox node:

systemctl restart pvedaemon.service