Linux Mint Troubleshooting Tips
23 January 2025
5:14 am
How to change the computer’s name First check it so: hostnamectl Then fix it so: hostnamectl set-hostname ‘newname’ This setting will persist on reboots unlike
Knowledgebase
Emails from StandardBank.co.za to a cPanel hosted server fails with bodyhash_mismatch – DKIM issues
22 January 2025
2:37 pm
Email from standardbank.co.za might fail with bodyhash_mismatch. Since it’s a bank most people panic and think it’s their own email systems that are at fault.
How to use iperf to test network speed
11 January 2025
8:28 am
On a older RedHat compatible server: [root@server:/root]> iperf3 -s ———————————————————– Server listening on 5201 ———————————————————– On the RedHat client: yum install iperf3 iperf3 -c server_ip
How to upgrade LibreNMS from php8.1-fpm to php8.3-fpm
8 January 2025
12:00 pm
Preparation As always, to upgrade to current PHP version you would need Ondrej’s package. But you may skip this step if it’s already installed. add-apt-repository
Using systemctl to see which services are automatically starting up (PHP-FPM issue)
8 January 2025
9:51 am
Use systemctl list-unit-files –type=service –state=enabled to get a list of services that will automatically start. E.g.: user@server:~$ systemctl list-unit-files –type=service –state=enabled UNIT FILE STATE VENDOR
How to mitigate the extremely popular xmlrpc.php XML-RPC attack on WHM hosted WordPress servers
23 January 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
Linux Mint Troubleshooting Tips
23 January 2025
How to change the computer’s name First check it so: hostnamectl Then fix it so: hostnamectl set-hostname ‘newname’ This setting will persist on reboots unlike
Linux Disk Space File System Management Commands
23 January 2025
Introduction Here are some commands to assist with mastering disks and file space management on Linux. TL;DR ncdu is my preferred option. Disk Usage by
Emails from StandardBank.co.za to a cPanel hosted server fails with bodyhash_mismatch – DKIM issues
22 January 2025
Email from standardbank.co.za might fail with bodyhash_mismatch. Since it’s a bank most people panic and think it’s their own email systems that are at fault.
How to use `ps` or `top` and flag/filter it properly to see high loads
15 January 2025
ps or top are often the first utilities a Linux administrator reaches for when looking at what’s happening on a system. It’s very much the