Expanding your linux VM Disk: Resize LVM partition without creating a new one

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Below is a friendly, step-by-step guide to resizing a Linux VM’s disk without creating a new partition. We’ll walk through extending the last partition on a disk, resizing a Physical Volume (PV), [...] Read more

Limit CPU, Memory, and Other Resources for a Service Using systemd

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Occasionally, you might encounter a service that unexpectedly gobbles up your system's resources. For example, I once set up an SSH honeypot to capture malicious bot activity—but when random bots [...] Read more

Remove sensitive (personal) headers from postfix emails

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When I first set up my email server to handle messages for my domains, I noticed a concerning issue: the outgoing email headers included sensitive information, such as my home IP address and the [...] Read more

Set up a SSH honeypot with logging on your linux server

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Setting up a honeypot on your server can be an effective way to monitor, log, and analyze potential attacks, as well as learn about common hacking techniques. By setting up a honeypot, you can create [...] Read more