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2019


DevConf.CZ 2019 Recap

·693 words·4 mins
DevConf.CZ 2019 wrapped up last weekend and it was a great event packed with lots of knowledgeable speakers, an engaging hallway track, and delicious food.

2018


How to thrive at a technical conference

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I’m at the 2018 Red Hat Summit this week in San Francisco and I am enjoying the interactions between developers, executives, vendors, and engineers.

2017


RHEL 7 STIG v1 updates for openstack-ansible-security

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DISA’s final release of the Red Hat Enterprise Linux (RHEL) 7 Security Technical Implementation Guide (STIG) came out a few weeks ago and it has plenty of improvements and changes.

2016


New SELinux shirts are available

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With the upcoming Red Hat Summit 2016 in San Francisco almost upon us, I decided to update the old SELinux shirts with two new designs:

2015


Improving LXC template security

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I’ve been getting involved with the Fedora Security Team lately and we’re working as a group to crush security bugs that affect Fedora, CentOS (via EPEL) and Red Hat Enterprise Linux (via EPEL).

Keep old kernels with yum and dnf

·206 words·1 min
When you upgrade packages on Red Hat, CentOS and Fedora systems, the newer package replaces the older package.

2014


Install sysstat on Fedora 21

·366 words·2 mins
One of the first tools I learned about after working with Red Hat was sysstat.

Performance benchmarks: KVM vs. Xen

·1072 words·6 mins
After having some interesting discussions last week around KVM and Xen performance improvements over the past years, I decided to do a little research on my own.

Text missing in chrome on Linux

·245 words·2 mins
I’m in the process of trying Fedora 20 on my retina MacBook and I ran into a peculiar issue with Chrome.

2013


2012


Off to the 2012 Red Hat Summit

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I’m on my way to my first Red Hat Summit and I’m really eager to learn some new things, meet new people, and share my experiences with others.

Fedora 17 is a go!

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I was glad to see the Fedora 17 Final is declared GOLD!

New Fedora and EPEL package: httpry

·229 words·2 mins
A fellow Racker showed me httpry about five years ago and I’ve had in my toolbox as a handy way to watch HTTP traffic.

Preparing for Red Hat Exams

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I originally wrote this post for the Rackspace Blog but I’ve posted it here just in case anyone following my blog’s feed finds it useful.

Kerberos for haters

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I’ll be the first one to admit that Kerberos drives me a little insane.

Getting started with SELinux

·564 words·3 mins
I used to be one of those folks who would install Fedora, CentOS, Scientific Linux, or Red Hat and disable SELinux during the installation.

2011


Dual-primary DRBD with OCFS2

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As promised in one of my previous posts about dual-primary DRBD and OCFS2, I’ve compiled a step-by-step guide for Fedora.

One RHCA exam down, five to go

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While I’m not the biggest proponent of certifications, I still think you can learn some valuable information while studying for some certification tests.

2010


2009


2008


2007


Red Hat Support EOL Dates

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I spoke to a customer recently who was concerned about their Red Hat Enterprise Linux 2.

Installing package groups with up2date

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A few days ago, I began to install a group of packages with up2date, and the person next to me was surprised that up2date even had this functionality.

rpmdb: Lock table is out of available locker entries

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If up2date throws some horrible Python errors and rpm says “rpmdb: Lock table is out of available locker entries”, you can restore your system to normality with the following: