How to Run a Masked Service on a Raspberry Pi
In configuring my Network UPS Tools, to shutdown my web server, I ran into a weird message: Loaded: masked (Reason: Unit ups-monitor.service is masked.) Active: inactive (dead) Huh? Turns out, good developers make some potentially destructive services a little harder to run! What’s going on here? A little more investigating: root@server1:~# systemctl enable ups-monitor.service Synchronizing […]
Read MoreHow to Configure an Orderly Shutdown on a Raspberry Pi
Once you have NUT-tools configured on your Raspberry to monitor your UPS, the next step is configuring the slaves. The slaves are your servers and other computers that are plugged into the UPS. Looking at my UPS stats on the NUT web server pages, it looks like I’ve got about 16 minutes of runtime under […]
Read MoreHow to Install Nagios on a Raspberry Pi
Nagios is a network monitoring system. It’s very useful for monitoring different types of equipment on your network, especially if different people need to be notified when certain things on the network fail. For example, if a router’s CPU goes way up for longer than you think is good, Nagios can send an email to […]
Read MoreHow to Run Mycroft on a Raspberry PI
What is Mycroft? Mycroft is an open source voice assistant. Think Alexa without all the closed-source mystery. I like Mycroft because: 1) it’s open-source and 2) I can run it on a Raspberry Pi! It’s easy to set up and get running. It will need a dedicated PI with a microphone and a speaker. Let’s […]
Read MoreHow to Run openHABian on a Raspberry Pi
What is openHAB? openHAB is a platform for controlling your house, or at least the electronics within it! They describe it as the open Home Automation Bus (openHAB, pronounced ˈəʊpənˈhæb), an open-source, technology-agnostic home automation platform which runs as the center of your smart home. I like the idea of a bus that offers me standardized ports to plug […]
Read MoreHow to Use an Adafruit OLED Screen on a Raspberry Pi 4
I recently got a UCTRONICS rack for my Raspberry Pi “servers”. One unique feature of the rack is a tiny 0.91″ OLED screen for each Raspberry! OLED? Yeah, OLED. OLED stands for organic light-emitting diode. Each pixel in an OLED display is made of an organic material that glows when you spark it with electricity. […]
Read MoreUCTRONICS Ultimate Rack for Raspberry Pi 4
I wanted to get a couple of my Pis out of the experiment sandbox and permanently on the network. I’ve got a salt server, a pi-hole, a transmission server, and my cacti monitoring server. The configs are all backed up and they can be salted back to life but I didn’t want to run the […]
Read MoreHow to Find a Raspberry Pi Model Number from the Command Line
Once you’re logged in to your Raspberry, issue the command: The OS will respond with a human-readable result: Raspberry Pi 2 Model B Rev 1.1
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