Problem You may want/need to create and enable a swap file on your machine. Many Linux distribution installers will create an extra partition for swap. However, there are several advantages to simply using a swap file on your root partition (the partition you installed Linux on). Here's
Problem I still remember the first time I used Spring Framework's dependency injection - it seemed almost magical in how it simplified (backend) web application development, and allowed me to do things with simple annotations that would have taken much effort and design to get right. @Autowired'
Guide to mount a drive in linux (deb/ubuntu) and set to auto-mount at boot. Mount drive Make a folder (will be mount point) sudo mkdir /media/data sudo mount /dev/sdb1 /media/data Now you can access the drive at /media/data. Auto-mount at boot We want the drive
You might want/need to create a systemd timer. Systemd timers are pretty much what they sound like - they execute things at specified times - similar to (and an alternative to) cron jobs. Below we're cover creating a simple systemd timer at the system level. Guide We
My eyes are a big fan of redshift. Redshift changes your display's colour temperature to make it a lot easier on your eyes (especially in dark settings). Now, you could install and use something like redshift-gtk, which gives you a tray application which allows you to enable/disable
Prometheus is a very nice open-source monitoring system for recording real-time metrics (and providing real-time alerts) in a time-series database for a variety of purposes. Here we're going to setup Prometheus on a server to monitor a wealth of statistics (such as CPU/memory/disk usage, disk IOps,
If the network environment you're operating in is restrictive then chances are port 1194 (standard openvpn port) will be blocked - which means that you wont' be able to connect to your openvpn server from that environment without making some changes on your end. One way to
If you use VMWare Workstation or player on a Linux host, then you may need (from time to time) to recompile several kernel modules when you update or change your kernel (for example). Usually you'll know when you need to do this when attempting to start a guest,
This article is about securing apache2. There's some excellent resources and article about several things you can do to secure apache2. One is by Peter Freitag and called 20 ways to Secure your Apache Configuration. Although it is quite an old post, much of it is still relevant.
Problem You may want/need to create and enable a swap file on your Linux machine (or server). For example, on some AWS EC2 instances you don't get ephemeral (temporary) storage disks that can be used for swap, so you might want to create a swap file on
Simplified guide for setting up a reverse proxy that allows installing multiple apps (e.g. tomcat apps) on a single server. The guide below is for a debian/ubuntu machine. For CentOS or Amazon linux, adapt this guide here. An SSL reverse proxy allows secured connections between client and an
ipset is an excellent tool that can be used to efficiently block a list of IP addresses at the firewall level (it uses iptables). It really helps in easily adding IP addresses and maintaining IP address blocklists. The below guide sets up ipset to block a list of IP addresses
japanese
I speak (and read/write) another language (Japanese). Below is a brief guide to enabling Japanese input on Arch/Manjaro (what I currently run) and i3wm (my preferred window manager). Guide Install required packages First let's install the required packages. Fortunately, Arch provides a "group" with
isso
This is (yet another) isso install guide but focusing specifically on integrating it into Atlassian's Confluence. I've grown quite fond of Confluence and have seen it scale extremely well (I deployed and maintain a confluence server at work for around 70 users). I also use confluence
tomcat
Apache Tomcat is an open source Java servlet container that's used to run Java webapps. It's simple, easy to deploy, and a downright wonderful implementation of Java servlet tech that I've used (especially recently) in software projects. It's also used extensively in
fail2ban
One thing that comes with the territory when running servers (application servers or otherwise) is the incessant attacks and intrusion attempts that occur. Most of these are simply querying your server looking for older versions of server applications to exploit (I'm looking at you myphpadmin and wordpress...). I&
bash-script
I generally use a fairly bare-bones window manager (.e.g i3 window manager. i3 gets it right here in that it doesn't give you a fancy (shmancy) GUI application to add new resolutions (hey it's a windows manager not a DE). Plus, we can do all
bash-script
So, on a large display we use as a dashboard (of sorts) we have a few applications running - such as a 3D spacecraft position orbital viewer (similar to the one on this page). We wanted to have several things running, and at timed intervals, switch between these applications (or
clevo
I had a Metabox P650RS-G (fantastic machine btw). I sometimes played in the BIOS and was tweaking memory speed settings and voltages one day when I messed up somewhat and the machine wouldn't post... After much weeping, wailing, and gnashing of teeth I finally figured out how to
disqus
As covered in a previous writeup: Installing, configuring, and integrating isso (commenting web app) into Confluence, I mentioned that I would cover integrating disqus into confluence. 💡Now before you go ahead and integrate disqus with confluence, be aware that there are other commenting options (some of which are open-source) that