I use Wordfence as a WordPress security solution. Even the free version has a comprehensive set of features, and the premium version is even better. It’s very easy to install and configure Wordfence as a regular plugin. However, the step to “Optimize the Wordfence firewall” fails for many people. This is not the fault of …
How to launch a Unity game downloaded via Steam on Linux.
If you are involved in information technology and compliance in a heavily regulated industry, or work with larger organizations, you have probably run across the terms SAS 70, SSAE 16, SSAE 18, SOC 1 report, SOC 2 report, Type 1 Report, and Type 2 Report. These terms are frequently abused and misunderstood, even by compliance …
Audit terminology: SAS 70, SSAE 16, SSAE 18, SOC1, SOC2, Type 1, Type 2 Read More »
Kickstart is a type of file that’s used to automatically install RedHat or CentOS Linux on a physical or virtual server. If you are managing more than a few servers, it’s a good idea to configure the servers via kickstart files instead of logging in and configuring each one manually. However, some unfortunate choices were …
Configure CentOS/RedHat VMs with Kickstart files on Virtualbox Read More »
“MySQL Server has gone away” is a cryptic error that can be hard to troubleshoot (look at all the various responses on Stack Overflow!) Many problems can cause this error; I would like to document one specific case. In this example, the client is a PHP app using the Phalcon framework: [Mon, 09 Apr 18 …
StackDriver Logging is a great feature of Google Compute Engine (GCE). You pretty much need a centralized logging solution if you are taking maximum advantage of the features offered by GCE. For example, most production applications will run on a cluster of web servers. If you set up the cluster as a managed instance group …
Viewing logs for a cluster of instances on Google Stackdriver Logging Read More »
UPDATE A new version of GROMACS (4.6 series) has been released since this post was written. Please try installing the latest version of GROMACS before attempting the steps in this post. Fixing GROMACS There is a bug in the do_dssp command in GROMACS 4.5.5 that prevents the analysis of secondary structure using DSSP . Attempting …
Getting DSSP to run with GROMACS 4.5.5 on Red Hat Linux Read More »
In my previous post about the Mini Maker Faire Orlando, I described some of the cool hardware that was on display. In this post, I’m going to describe some of the electronics available from local vendors. Electrimod Local vendor Electrimod (Clermont, FL) was on hand to showcase their pluggable modules for PIC microcontroller development. Basically, …
Tex Live For reasons unknown, a TeX Live package is not available for Red Hat Enterprise Linux/Centos 5 from the major repositories (EPEL or DAG). I consider this to be a glaring omission, since TeXLive is a great improvement upon teTeX. Since I don’t have time right now to package it myself, I installed TeX …
This post describes how to get GNU Octave up and running on a CentOS 5 Linux system for use in reading, processing, and writing video files. You will need to use the EPEL and DAG/rpmforge repositories, but I won’t explain how to do that here. NOTE: I had to go through some trial and error …