ZFS Primer
19 May 2025
7:04 pm
Sometimes your ZFS drives on your disk runs away with you. Then you quickly need commands to see what ZFS disk is the busiest. Try
Knowledgebase
Canon printer asking for username / password
1 May 2025
11:21 am
Open the file /etc/cups/cups-files.conf. Find the group name at the line containing SystemGroup (in Ubuntu it should be lpadmin). Add yourself to that group (sudo usermod -a -G lpadmin
KernelCare Broken Warnings and Looping about Free Symlink Protection on WHM/cPanel servers
26 April 2025
7:25 am
On a cPanel server you may see this warning: You’ll notice the link “Add KernelCare’s Free Symlink Protection” but clicking it bring up either a
How to do a free naked domain redirect
26 April 2025
6:14 am
Some sites such as ghs.googlehosted.com. requires you to use a CNAME www.example.com to ghs.googlehosted.com.. However, without www., the site won’t work. The solution can be
Finding an active PHP attacker / hacker on a cPanel shared server with many subdomains
24 April 2025
1:51 pm
Background cPanel has this lovely feature where you can use one site and then create many more sites below public_html. This is all fine and
For some domains on a Virtualmin server, log file rotation and enabling / disabling is problematic
21 May 2025
On a large Virtualmin server, for some domains, you might encounter the following issue when enabling and disabling log rotation using the command line. The
Virtualmin doesn’t upgrade: How to fix invalid signature Virtualmin apt packages
21 May 2025
Whilst updating Virtualmin, you might get this error: Err:6 https://software.virtualmin.com/vm/6/gpl/apt virtualmin-focal InRelease The following signatures were invalid: EXPKEYSIG D9F9010760D62A6B Virtualmin, Inc. (Package signing key for
CentOS is out of date – yum upgrade is failing – Fixes for yum update and yum upgrade
21 May 2025
CentOS 7 Is Broken for Upgrade In the last few year RedHat destroyed CentOS 7. Now we’ve moved on to Debian, Ubuntu, and Alma Linux.
How to mitigate the extremely popular xmlrpc.php XML-RPC attack on WHM hosted WordPress servers
20 May 2025
WordPress Is a Security Hole WordPress is a convoluted mess of security holes. Every year millions of WordPress websites are attacked because of the poor
ZFS Primer
19 May 2025
Sometimes your ZFS drives on your disk runs away with you. Then you quickly need commands to see what ZFS disk is the busiest. Try