Tag Archives: Red Hat Enterprise Linux

Compiling and Installing mod_wsgi 4.5.6 on RHEL/CentOS 6

Posted on September 4, 2016 by The Civilized Cynic

Just a quick note in addition to the troubleshooting post I provided; When compiling mod_wsgi from source (which is Graham Dumpleton’s serious recommendation), you may choose to compile the module with a different version of Python than that which is … Continue reading →

Posted in Information Technology | Tagged , , , , | 1 Comment

Troubleshooting Apache httpd and mod_wsgi with Anaconda Python 3.5 on RHEL/CentOS 6

Posted on September 3, 2016 by The Civilized Cynic

Man, I have spent many hours over the last few days figuring out why, exactly, I am having so much trouble getting mod_wsgi to do so much as present a simple test application.  The issues I have encountered have seemed … Continue reading →

Posted in Information Technology | Tagged , , , , , | Leave a comment

Installing and Configuring the Microsoft SQL Server Driver for unixODBC on Red Hat Enterprise Linux 7.2

Posted on March 25, 2016 by The Civilized Cynic

General Procedure Up Front 1.  Install unixODBC in RHEL 7.2 $ sudo dnf install unixODBC 2.  Download and install the Microsoft ODBC Driver 13 (Preview) for SQL Server on Linux These instructions are actually good enough. 3.  Create and configure … Continue reading →

Posted in Information Technology | Tagged , , | 6 Comments

Installing PL/R on RHEL/CentOS 6 with PostgreSQL 9.4

Posted on March 2, 2016 by The Civilized Cynic

It’s pretty simple, but it involves building software from source and the lack of any explicit documentation for a typical RHEL/CentOS 6 system using the PostgreSQL RPMs was something of a pain in the butt, so here’s the process: First, make sure you take … Continue reading →

Posted in Information Technology | Tagged , , , , | Leave a comment

Index of Literature: Using cgroups to manage libvirt/QEMU/KVM guest domains

Posted on September 18, 2015 by The Civilized Cynic

Introduction to Linux Control Groups (sysadmincasts) Introduction to Control Groups (RHEL 7) Subsystems and Tunable Parameters (RHEL 6 – at least theoretically relevant to modern Fedora/RHEL/CentOS systems) cgroups (Kernel.org) virsh manual (libvirt – under construction – I may contribute, though … Continue reading →

Posted in Information Technology | Tagged , , , , , , | Leave a comment

Troubleshooting DLNA Discovery: Plex Media Server on a KVM/QEMU Emulated Fedora 22 Server

Posted on September 15, 2015 by The Civilized Cynic

TL;DR:  If you’re running a Plex Media Server in a guest domain on a KVM/QEMU/libvirt-based hypervisor platform, make sure that the bridge you use to provide network access to the guest domain (such as macvtap) is configured in the host … Continue reading →

Posted in Information Technology | Tagged , , , , , , , , , , | 2 Comments

Troubleshooting R Package Installation on Red Hat Enterprise Linux 6

Posted on July 17, 2015 by The Civilized Cynic

I thought I’d take the opportunity to work through an example to demonstrate a basic problem-solving method for R on RHEL: When attempting to install the R packages “ggmap” and its dependent package “jpeg,” one might encounter output with the … Continue reading →

Posted in Information Technology | Tagged , , | Leave a comment

Reconfiguring Java for R

Posted on July 10, 2015 by The Civilized Cynic

If anyone should attempt to create a connection to a database using the Java Database Connectivity (JDBC) package in R, that person might encounter something such as the following: > library(RJDBC) Loading required package: DBI Loading required package: rJava > … Continue reading →

Posted in Information Technology | Tagged , , | Leave a comment

Installing the TIGER Geocoder with RHEL 6.6, PostgreSQL 9.4, PostGIS 2.1.7, and the TIGER 2013 Census Data

Posted on July 6, 2015 by The Civilized Cynic

Yeah, I know we’re stuck with the TIGER 2013 census data, but the 2014 data doesn’t work easily with PostGIS 2.1.7; PostGIS 2.2, which is still in development, will support the 2014 dataset.  So, for now, we’re using the 2013 … Continue reading →

Posted in Information Technology | Tagged , | 2 Comments

Using a Proxy Server for RHN Updates on Red Hat Enterprise Linux 6

Posted on March 12, 2015 by The Civilized Cynic

So, a very long story has resulted in the need for me to employ a proxy server to reach the RHN Classic update infrastructure.  Obviously, the first solution to such a problem would be to switch to the newer Red … Continue reading →

Posted in Information Technology | Tagged , | Leave a comment