How can i find out what is causing my VM to crash?

[mgr1397]

I'm running an ubuntu VM with docker only installed, and something is causing the VM to fill up its disk space (even though there is plenty of free space) and crash. I need to restart it to get it back up and running. How can I find out what is causing it?

 

[Impact]

What's in the logs? How do you know the disk space is getting full but also isn't?

 

[mgr1397]

Not sure which logs to look at it (i'm relatively new to proxmox). I know it's getting full because I am monitoring my pulse LXC and the ubuntu VM is showing as 0% free disk space

 

[Impact]

Check the logs of the last boot with something like this

journalctl -b -1 -r

See more here: https://www.loggly.com/ultimate-guide/using-journalctl/

To check space usage inside the guest try this

apt install -y gdu
gdu /

Refresh with r.