The Engineer's Workshop

Cybersecurity • 5 min read

Log4j for Dummies: How to Determine if Your Server (or Docker Container) Is Affected by the Log4Shell Vulnerability

Log4j is the cybersecurity disaster of the decade. If you thought the SolarWinds hack was bad, well, you ain't seen nothing yet. So what's going on and what's so bad about this exploit? I researched the most expedient and effective way to check for the log4j vulnerability so you don't have to.…

TorqueWrench • 16 Dec 2021

SysAdmin • 3 min read

Experiments with apcupsd in Debian/Proxmox: Answers to Questions You Didn't Know You Had

While setting up an apcupsd client on Proxmox, a bunch of questions crossed my mind about the behavior of the apcupsd daemon. I did the experiments to get answers so you don't have to. I hope you find the below apcupsd Q&A helpful. Hopefully it will help you design a better homelab network.…

TorqueWrench • 28 Apr 2021

SysAdmin • 3 min read

Automatically Resolve NFS Stale File Handle Errors

NFS Stale File Handles can be one of the most frustrating problems when it comes to network-attached storage (NAS). In this guide, we'll talk about methods you can use to equip your NFS clients to recover automatically from stale file handle errors.…

TorqueWrench • 20 Mar 2021

Ghost • 3 min read

Save Disk Space By Setting Up Logrotate with Your Ghost Blog

The Ghost blog platform doesn't automatically set up logrotation when it is installed. As a result, Ghost will perpetually append to its log files until you run out of disk space. Here is how to fix it using the logrotate utility in Linux.…

TorqueWrench • 08 Mar 2021

Projects • 5 min read

Graph Your Pulse with an Arduino Pulse Ox Plethysmograph

With the recent COVID-19 outbreak, I have noticed a new interested in biomedical engineering and electronics among the general population. In this tutorial, I’ll guide you through creating your own Arduino-based pulse plethysmograph.…

TorqueWrench • 29 Sep 2020

unRAID • 9 min read

Deploying an unRAID NFS Server

A brief guide on when and how to set up an NFS server on unRAID. Includes more advanced configuration on how to deploy an unRAID NFS server behind a firewall with static ports.…

TorqueWrench • 19 May 2020

Linux • 11 min read

How To Set Up a WireGuard VPN Server on Ubuntu Linux

With WireGuard now officially supported by Ubuntu and integrated into the Linux kernel, I’ve decided it’s high time to for dedicated guide on how to set up a WireGuard VPN server on Ubuntu.…

TorqueWrench • 22 Apr 2020

Linux • 3 min read

Ubuntu's Latest LTS RC Is Out: Here's How to Upgrade to Ubuntu 20.04 LTS Focal Fossa

Ubuntu's latest LTS is now out, bringing with it a bunch of exciting new features. In today's short guide, we'll learn how to update to Ubuntu 20.04 Focal Fossa.…

TorqueWrench • 16 Apr 2020

Servers • 8 min read

LVM, Thin Provisioning, and Monitoring Storage Use: A Case Study

If you're not monitoring your server's storage use, it can quickly run away from you. Today's guide shows you how to keep an eye on things with an introduction to LVM thin provisions and monitoring disk use with Diskover, lvs, and Grafana utilities.…

TorqueWrench • 10 Mar 2020

Raspberry Pi • 8 min read

How to Set Up WireGuard on a Raspberry Pi

WireGuard is rapidly becoming the go-to VPN, with even Linus Torvalds himself praising it. In fact, Torvalds is such a fan, he has merged it directly into the Linux kernel. But why is WireGuard receiving so much praise and should you use it? Keep reading to find out.…

TorqueWrench • 20 Feb 2020

Linux • 4 min read

tmux for Beginners: A Quick and Easy Introduction

Boost your productivity with this tutorial in how to use tmux. Protect yourself against unexpected disconnects and improve development workflows.…

TorqueWrench • 10 Feb 2020

Servers • 8 min read

How to Monitor Disk Usage and Growth with Diskover

Monitoring server storage should be part of every data center monitoring procedure. Learn how to monitor and analyze server storage use and growth with Diskover.…

TorqueWrench • 04 Feb 2020

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