Category Archives: open source
Build Secure VLAN Networks with ‘Shibby’ Router Firmware
I’ve been an ardent user of the Tomato Linux Open Source router firmware, specifically on the ASUS RT-N66U home routers using the ‘Shibby’ builds. They let you take full advantage of enterprise (and kitchen sink) features on the broadcom-based residential … Continue reading
Trick out your Terminal
Here are some useful ways to enhance your operating system shell environment. The first will give you a permanent bash history that’s up to date and doesn’t require a logout to update command history, nor does it get reset. The … Continue reading
Installing CentOS on the Raspberry Pi
I recently acquired a Raspberry Pi 2 and wanted to run CentOS7 on it. Here’s how I got CentOS installed and setup. There are now official Raspberry Pi 2 CentOS ARMv7hl images available for your enjoyment. Let’s get started.
How to Manually Clean Indexes from Elasticsearch
In a previous post we covered getting started with the ELK stack (Elasticsearch, Logstash, Kibana). Now we need to remove old indexes manually from an Elasticsearch datastore sorted by age. We’ll be using the curator tool in a sandbox using … Continue reading
Creating lots of iSCSI LUNs Quickly on Netapp
I’ve been using Netapp technology since Ontap 6 before flexible volumes were around, and it’s my favorite commercial storage platform. They provide a robust CLI and you can automate repetitive tasks by using SSH and a bit of creativity. Recently … Continue reading
Linux RAID Disk Replacement with Sans Digital 8-bay eSATA tower
There’s plenty of useful articles and guides on managing Linux software RAID floating around. I recently had a disk failure in my 8-bay eSATA array and thought I’d add to the mix. Here’s what I did, including some notes specific … Continue reading
Logitech G933 Wireless Headset on Linux
I recently came into possession of a Logitech G933 wireless headset and started using it on my Linux work laptop for 100% of my audio and video conferencing needs. There were a few issues out of the box on Linux … Continue reading
Devconf2016 – Trystack: Free OpenStack for Planet Earth
I gave a talk at the annual Linux Users and Developers Conference (Devconf 2016) in Brno, Czech Republic on Trystack.org: architecture, operations insights, tooling, automation and what it takes to run a large, public OpenStack cloud for the general public. … Continue reading
Linux Laptop Power Tuning with Powertop and Friends
There’s an easy way to reduce power usage on Linux laptops using Intel’s Powertop utility. Powertop polls your existing power usage and recommends tunings for your hardware. I’ll show you how to quickly make the most of your battery life … Continue reading
Always Fill Saved Credentials in Firefox
Sometimes web page Javascript will disallow you to auto fill your saved password credentials. In recent versions of Firefox there’s now a way to fill out credentials without digging into preferences -> security -> saved passwords. Simply enter the username … Continue reading
How to Manually Create/Tune an Elasticsearch Index
The ELK stack provides a very powerful set of tools that allow administrators and developers unfettered access and customizable log aggregation across any manner of server, application or device. Recently I needed to stand up a new ELK stack on … Continue reading
Learning OpenStack Networking (Neutron) 2nd Edition
I’ve recently had the pleasure of editing/reviewing the new second edition OpenStack Neutron book by James Denton. It’s published by Pakt Publishing who has also published a few other OpenStack-related books, including one by Dan Radez on OpenStack Essentials. OpenStack … Continue reading
Funcamp Open Source Game Servers
Recently I posted guides around playing actively maintained free/Open Source games like Enemy Territory: Legacy, or Urban Terror. I’ve set up a few game servers for the general public in my free time and I’ll list them here along with … Continue reading
Play Enemy Territory Legacy! (Linux, Mac, Windows)
In my previous post about Enemy Territory I mentioned an active, maintained fork of this infamous Splash Damage WWII RPG-shooter from the mid-2000’s. I found time to install, play and setup servers for Enemy Territory: Legacy – If you’re looking … Continue reading
Rate Limiting and Multicast on Dell Force10 Switches
Sometimes it’s hard finding extensive, easily digestible documentation on FTOS running on the Dell Force10 switch platform. Recently we had to apply simple rate limiting against ports generating more bandwidth than they should but not get too in the weeds … Continue reading
