Using the pressure stall information interface in kernel 4.20
·535 words·3 mins
Fedora 29 now has kernel 4.
- Tags/
linux
2019
2018
Make alt-arrow keys work with terminator and weechat
·278 words·2 mins
As I make the move from the world of GNOME to i3, I found myself digging deeper into the terminator preferences to make it work more like gnome-terminal.
Install testing kernels in Fedora
If you’re on the latest Fedora release, you’re already running lots of modern packages.
2017
Ensuring keepalived starts after the network is ready
After a recent OpenStack-Ansible (OSA) deployment on CentOS, I found that keepalived was not starting properly at boot time:
Troubleshooting CyberPower PowerPanel issues in Linux
I have a CyberPower BRG1350AVRLCD at home and I’ve just connected it to a new device.
Apply the STIG to even more operating systems with ansible-hardening
Tons of improvements made their way into the ansible-hardening role in preparation for the OpenStack Pike release next month.
Customize LDAP autocompletion format in Thunderbird
·298 words·2 mins
Thunderbird can connect to an LDAP server and autocomplete email addresses as you type, but it needs some adjustment for some LDAP servers.
Enable AppArmor on a Debian Jessie cloud image
I merged some initial Debian support into the openstack-ansible-security role and ran into an issue enabling AppArmor.
OpenStack-Ansible networking on CentOS 7 with systemd-networkd
Although OpenStack-Ansible doesn’t fully support CentOS 7 yet, the support is almost ready.
RHEL 7 STIG v1 updates for openstack-ansible-security
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.
Five reasons why I’m excited about POWER9
There’s plenty to like about the POWER8 architecture: high speed interconnections, large (and flexible) core counts, and support for lots of memory.
ICC color profile for Lenovo ThinkPad X1 Carbon 4th generation
My new ThinkPad arrived this week and it is working well!
2016
OpenPOWER Summit Europe 2016 Recap
I was in Barcelona last week for two big events: the OpenStack Summit and the OpenPOWER Summit.
Power 8 to the people
IBM Edge 2016 is almost over and I’ve learned a lot about Power 8 this week.
IBM Edge 2016: Day 2 Recap
Day two of IBM Edge 2016 is all done, and the focus has shifted to the individual.
IBM Edge 2016: Day 1 Recap
I am here in Las Vegas for IBM Edge 2016 to learn about the latest developments in POWER, machine learning, and OpenStack.
Setting up a telnet handler for OpenStack Zuul CI jobs in GNOME 3
·525 words·3 mins
The OpenStack Zuul system has gone through some big changes recently, and one of those changes is around how you monitor a running CI job.
Bring back two and three finger taps in Fedora 24
Most of the recent Fedora upgrades have been quite smooth.
My list of must-see sessions at Red Hat Summit 2016
The Red Hat Summit starts this week in San Francisco, and a few folks asked me about the sessions that they shouldn’t miss.
Lessons learned: Five years of colocation
·1969 words·10 mins
Back in 2011, I decided to try out a new method for hosting my websites and other applications: colocation.
Mouse cursor disappears in GNOME 3
UPDATE: The fixed version of mutter is now in the Fedora updates repository.
Recovering deleted Chrome bookmarks on Linux
After getting a bit overzealous with cleaning up bookmarks in Chrome, I discovered that I deleted a helpful Gerrit filter for OpenStack reviews.
2015
First thoughts: Linux on the Supermicro 5028D-TN4T
·790 words·4 mins
I’ve recently moved over to Rackspace’s OpenStack Private Cloud team and the role is full of some great challenges.
Understanding systemd’s predictable network device names
·1319 words·7 mins
I talked a bit about systemd’s network device name in my earlier post about systemd-networkd and bonding and I received some questions about how systemd rolls through the possible names of network devices to choose the final name.
Research Paper: Securing Linux Containers
·467 words·3 mins
It seems like there’s a new way to run containers every week.
Book Review: Linux Kernel Development
·764 words·4 mins
I picked up a copy of Robert Love’s book, Linux Kernel Development, earlier this year and I’ve worked my way through it over the past several weeks.
Tweetdeck’s Chrome notifications stopped working
With the last few weeks, I noticed that Tweetdeck’s notifications weren’t showing up in Chrome any longer.
Run virsh and access libvirt as a regular user
Libvirt is a handy way to manage containers and virtual machines on various systems. On most distributions, you can only access the libvirt daemon via the root user by default. I’d rather use a regular non-root user to access libvirt and limit that access via groups.
Share a wireless connection via ethernet in GNOME 3.14
·368 words·2 mins
There are some situations where you want to do the opposite of creating a wireless hotspot and you want to share a wireless connection to an ethernet connection. For example, if you’re at a hotel that offers only WiFi internet access, you could share that connection to an ethernet switch and plug in more devices. Also, you could get online with your wireless connection and create a small NAT network to test a network device without mangling your home network.
Xerox ColorQube 9302 and Linux
I do a bunch of Linux-related tasks daily.
Lessons learned from a kernel bisection
·501 words·3 mins
[][1]I’m far from being a kernel developer, but I found myself staring down a [peculiar touchpad problem][2] with my new Dell XPS 13.
Using ZoneMinder with a Logitech C270 webcam
·274 words·2 mins
For those of you in the market for a cheap webcam for videoconferencing or home surveillance, the Logitech C270 is hard to beat at about $20-25 USD.
Linux support for the Dell XPS 13 9343 (2015 model)
I’M ALL DONE: I’m not working on Linux compatibility for the XPS 13 any longer.
2014
Try out LXC with an Ansible playbook
·406 words·2 mins
The world of containers is constantly evolving lately.
A response to Infoworld’s confusing article about Fedora
·333 words·2 mins
Working with the Fedora community is something I really enjoy in my spare time and I was baffled by a article I saw in Infoworld earlier last week.
Test Fedora 21 at Rackspace with Ansible
Fedora 21 reached Alpha status last month and will reach beta status at the end of October.
Apache’s mod_proxy, mod_ssl, and BitTorrent Sync
BitTorrent Sync allows you to keep files synchronized between multiple computers or mobile devices.
Switching to systemd on Debian jessie
It seems like everyone is embracing systemd these days.
Helpful Linux I/O stack diagram
·78 words·1 min
During one of my regular trips to reddit, I stumbled upon an amazingly helpful Linux I/O stack diagram:
Docker, trusted builds, and Fedora 20
·417 words·2 mins
Installing Xen on Fedora 20
·264 words·2 mins
I’ve written about installing Xen on Fedora 19 and earlier versions on this blog before.
icanhaz more domains: icanhazepoch.com
·115 words·1 min
Sometimes I can’t help myself.
Puppy Linux, icanhazip, and tin foil hats
·336 words·2 mins
I figured that the Puppy Linux and icanhazip.
CentOS and Red Hat join forces
I’d like to congratulate the CentOS project on their big news yesterday.
2013
Learn octal file permissions easily with stat
·106 words·1 min
My SANS classmates were learning how to set and recognize file permissions on a Linux server and we realized it would be helpful to display the octal value of the permissions next to the normal rwx display.
I’m on the hunt for experienced security analysts!
Want to work for a company that finds new approaches to traditional IT problems?
One month using a Linux laptop at work: Back to the Mac
This post has been a bit delayed, but I want to follow up on the post I wrote last month about moving from OS X to Linux at work.
Moving from OS X to Linux: Day One
·1418 words·7 mins
The thought of using Linux as a manager in a highly Windows- and Mac-centric corporate environment isn’t something to be taken lightly.
Come and get your SELinux shirts!
After my podcast interview at the 2013 Red Hat Summit, Dan Walsh posted a photo of himself in the SELinux shirt that I gave him at the Summit:
A humble farewell to Seth Vidal
I was shocked to see Robyn Bergeron’s email today about Seth Vidal’s passing.