" Proxmox "

How to remove Proxmox "No Valid Subscription" pop up message from Proxmox 3+

Recently with version 3.1+ of Proxmox, if you don’t have a license subscription, they made it where a message box pops up on screen that says “You do not have a valid subscription for this server. Please visit www.proxmox.com to get a list of available options.” … this is because in order to use the “Enterprise” repository you must pay for a subscription. The basics of it are they still provide a free repository, but those packages are not as heavily tested and verified as the enterprise repository. Either way when you, or one of your clients/customers, logs into Proxmox interface, it shows that annoying nag message box now. Luckily there is an easy way to remove it…

How to secure an OpenVZ cPanel /tmp directory

Recently on an OpenVZ VPS we kept getting messages from ConfigServer Security and Firewall stating “lfd on server.host.com: Suspicious File Alert”, with the message pointing specifically to a file in the /tmp directory. After going through the files I didn’t find anything that looked suspicious in nature (exploit, malware, etc), but I did notice that this older VPS did not have the /tmp directory mounted correctly to secure it. When I attempted to use cPanel’s built in /scripts/securetmp I got an error saying the loop module wasn’t detected/installed “*** Notice *** No loop module detected” (more…)

Proxmox/OpenVZ Can’t umount (unmount) device or resource busy

Recently when working on an OpenVZ container I was attempting to create a backup.  While doing so I kept running into a problem where the server wouldn’t let me unmount the container in order to create the backup.  The error you may see in this instance would say “Can’t umount /var/lib/vz/root/OpenVZID device or resource busy”, or “Can’t umount /var/lib/vz/root/100: Device or resource busy TASK ERROR: command ‘vzctl umount 100’ failed: exit code 51″, in this case the container being 100.  Here’s how I was able to fix it …  (more…)