Use RSA CA Certificates with OpenSSH 8.2

April 7, 2020 3 minute read

OpenSSH 8.2 is coming to the latest Long-Term Service release of Ubuntu, Focal Fossa (20.04), and has some breaking changes for users using an SSH Certificate Authority.

3 ways to use MySQL / MariaDB CLI without password

February 4, 2020 4 minute read

For all of us who are learning to use or developing with MySQL or MariaDB, it’s a common task to manually log in to the database for inspection. This is usually done with the mysql command line client, and for sure it’s cumbersome to log in to the database using your application’s credentials. Fo...

Managing servers with OpenSSH Certificate Authority

December 23, 2019 6 minute read

Since the addition of the website server for an external corporation, I now have 5 Linux servers to manage on my own. I also have 4 terminal devices that I use to connect to those servers: two of my laptops, my Android phone (using Termux), and one of those servers that I use as a workstation.

Creating templated Systemd services

July 16, 2019 2 minute read

Last time I wrote an article about NAT traversal using FRP, which has been my personal solution for exposing SSH access of machines behind NAT to the internet for a long time.

Build a minimal Linux system and run it in QEMU

April 7, 2019 6 minute read

Linux is the #1 open-source operating system nowadays, and many people are running a Linux distro, such as Ubuntu or Arch. Linux is also the most popular choice for a server OS.

Setting up Ubuntu in VMware Workstation

February 21, 2019 3 minute read

A quick step-by-step guide for those wanting to get in touch with Ubuntu in a virtual machine with minimal effort. For example, at the start of a semester of Operating System Concepts course.

Access your Raspberry Pi remotely with SSH

February 13, 2019 3 minute read

Do you have a personal server at home but can’t access it from work or travel because your home doesn’t have a public IP? If so, then, this article is what you’re looking for.