Automatic container updates with watchtower
·484 words·3 mins
Watchtower keeps an eye on your running containers and updates them when new containers appear upstream. 📦
- Tags/
linux
2023
2022
Switch audio to bluetooth headphones automatically
·324 words·2 mins
Automatically switch your system audio to your bluetooth headset as soon as they connect. 🎧
Deploy Fedora 37 on Hetzner Cloud 🇩🇪
·728 words·4 mins
Avoid cloud provider modifications and deploy a genuine release version of Fedora 37 on Hetzner Cloud. ⛅
Build a Tailscale exit node with firewalld
·792 words·4 mins
Tailscale exit nodes allow you to route your traffic through nearly any system in your tailnet. Learn how to build an exit node using firewalld. 🕳️
PXE boot netboot.xyz on a Mikrotik router
·749 words·4 mins
Get systems online quickly or rescue a broken system by PXE booting from netboot.xyz using a Mikrotik router. 🛠
Extra icanhazip services going offline
·232 words·2 mins
The original icanhazip.com lives on, but the other services are going offline. 😢
Efficient emoji experience in Wayland
·612 words·3 mins
Because nobody wants an inefficient emoji workflow. 🙈
Build a custom CentOS Stream 9 cloud image
·983 words·5 mins
Learn how to customize a CentOS Stream 9 cloud image with the stuff you want and nothing that you don’t. 📦
Basic authentication with Traefik on kubernetes
·875 words·5 mins
Keep prying eyes away from your sites behind Traefik with basic authentication. 🛃
Encrypted gitops secrets with flux and age
·1636 words·8 mins
Store encrypted kubernetes secrets safely in your gitops repository with easy-to-use age encryption. 🔐
Mount NFS shares in kubernetes
·856 words·5 mins
Access files over NFS within kubernetes pods with a quick volume mount. 🗄
Update Supermicro BIOS firmware from Linux
·1086 words·6 mins
Upgrade your Supermicro BIOS firmware from Linux using their SUM utility. 🔧
Disable HiDPI in alacritty
·459 words·3 mins
The alacritty terminal on Fedora enables HiDPI mode by default. Break out your magnifying glasses as we disable HiDPI. 👓
2021
Kerberos logins with Brave on Linux
·563 words·3 mins
Brave recently changed how their browser reads managed policy configuration, but luckily the fix is an easy one. 🔧
Deploy a custom Fedora 35 AMI to AWS with Image Builder
·1278 words·6 mins
Want to build your own Fedora 35 image for AWS? Use Image Builder to build and deploy an image made just for you. 🏗
Install Azure CLI on Fedora 35
·254 words·2 mins
Provision services on Microsoft’s Azure CLI on Fedora 35. 💙
Secure Tailscale networks with firewalld
·648 words·4 mins
Tailscale provides a handy private network mesh across multiple devices but it needs security just like any other network. 🕵
ThinkPad X1 Nano Gen 1 Review
·1216 words·6 mins
One of the smallest ThinkPads delivers one of the best experiences I’ve had on a laptop. 💻
Run Xorg applications with podman
·509 words·3 mins
Package up graphical applications in containers and run them with podman. 🚢
Backlight control with i3
·298 words·2 mins
Adjust the LED backlight on your laptop quickly in i3 on Linux. 💡
Forwarding ports with firewalld
·729 words·4 mins
Learn how to forward ports with firewalld for IPv4 and IPv6 destinations. 🕵🏻
Set network interface speed with systemd-networkd
·624 words·3 mins
Sometimes network interface autonegotiation doesn’t work as well as it should. Luckily, you can fix it with systemd-networkd. 🔧
Deploy Fedora CoreOS in Hetzner cloud
·1024 words·5 mins
Launch your containers on Fedora CoreOS instances in Hetzner cloud with a few workarounds. 🚀
Build Fedora AWS images in GitHub Actions with Image Builder
·1364 words·7 mins
Build images for AWS and deploy them to your AWS account all within GitHub Actions. 🤖
DHCPv6 prefix delegation with systemd-networkd
·844 words·4 mins
Use the new DHCPv6 prefix delegation features in systemd-networkd to make IPv6 subnetting easy! 🎉
Enable dark mode in Firefox without changing themes
·242 words·2 mins
Firefox allows you to set dark mode as the default without changing themes or changing your desktop configuration. 😎
Enable touchpad tap to click in i3
·781 words·4 mins
Enable tap-to-click on your laptop’s touchpad in i3 with one of two methods. 💻
Tray icons in i3
·396 words·2 mins
Get your system tray looking great and displayed on the correct monitor with a simple script and some i3 configuration. 📥
Rootless container management with docker-compose and podman
·703 words·4 mins
Run rootless Linux containers without any daemons using docker-compose and podman on Fedora! 📦
icanhazip.com FAQ
·38 words·1 min
The family of icanhaz sites help you get more information about your network connection.
A new future for icanhazip
·1493 words·8 mins
icanhazip.com lives on with the same mission, but with a new owner 🤗
Efficient emojis with rofimoji
·407 words·2 mins
Emojis brighten up any message or document. 🌻 Search, select, and use emojis quickly on Linux with rofimoji. 🤗
Monitor a UPS with a Raspberry Pi Zero W
·1135 words·6 mins
Monitor nearly any uninterruptible power supply (UPS) with a Raspberry Pi Zero W and HomeAssistant
2020
Build AWS images with Image Builder
·1394 words·7 mins
Build a customized image for AWS with Image Builder and use the built-in automatic uploader and importer.
Make diacritics easy in Linux
·482 words·3 mins
Making an effort to use diacritics is always a good idea, but how can you make it easier in Linux?
Disable Nvidia GPU on the Thinkpad T490
·1537 words·8 mins
The Lenovo ThinkPad T490 is a great laptop, but it comes with some discrete GPU challenges.
2019
Bring Back Fedora's Beefy Miracle boot splash
·209 words·1 min
Fedora 17’s code name was Beefy Miracle and it had a great mascot. You can see it at boot time with a few quick changes.
Thinkpad T490 Fedora install tips
·637 words·3 mins
My new T490 with a 10th generation Intel CPU and a discrete NVIDIA MX250 has arrived! Installing Linux creates some interesting challenges.
Monitoring OpenShift cron jobs
·525 words·3 mins
Openshift (and Kubernetes) allow you to run jobs on schedule, but these jobs can fail from time to time. You can monitor them from bash!
Monitor CyberPower UPS wattage
·607 words·3 mins
Monitor the power consumption of your CyberPower UPS and display the live output in your Linux desktop’s status bar.
Install Chromium with VAAPI on Fedora 30
·840 words·4 mins
Lower your CPU usage and increase battery life when you watch certain videos by using Chromium with VAAPI support.
Customize GNOME from i3
·317 words·2 mins
All of your GNOME and gtk applications are configured in i3 with a few simple tricks.
Deploy monit in OpenShift
·1123 words·6 mins
Monit is a tried-and-true monitoring daemon that is easy to deploy. Add it to OpenShift to make monitoring even easier.
Get faster GitLab runners with a ramdisk
·595 words·3 mins
Many cloud providers give you lots of memory with each instance and you can speed up tests and builds by using a ramdisk.
buildah error: vfs driver does not support overlay.mountopt options
·320 words·2 mins
Buildah and podman work well with the vfs storage driver, but the default mount options can cause problems.
Fedora 30 on Google Compute Engine
·880 words·5 mins
Fedora 30 is a great Linux distribution for cloud platforms, but it needs a little work to perform well on Google Compute Engine.
Build containers in GitLab CI with buildah
·888 words·5 mins
My team at Red Hat depends heavily on GitLab CI and we build containers often to run all kinds of tests.
Inspecting OpenShift cgroups from inside the pod
·1056 words·5 mins
My team at Red Hat builds a lot of kernels in OpenShift pods as part of our work with the Continuous Kernel Integration (CKI) project.
Get a /56 from Spectrum using wide-dhcpv6
·101 words·1 min
After writing my last post on my IPv6 woes with my Pixel 3, some readers asked how I’m handling IPv6 on my router lately.
Stop audio pops on Intel HD Audio
·636 words·3 mins
I recently picked up a Dell Optiplex 7060 and I’m using it as my main workstation now.
Automatic floating windows in i3
·657 words·4 mins
The i3 window manager is a fast window manager that helps you keep all of your applications in the right place.
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.
Using the pressure stall information interface in kernel 4.20
·535 words·3 mins
Fedora 29 now has kernel 4.
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
·468 words·3 mins
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
·312 words·2 mins
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
·906 words·5 mins
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
·215 words·2 mins
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
·475 words·3 mins
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
·574 words·3 mins
Although OpenStack-Ansible doesn’t fully support CentOS 7 yet, the support is almost ready.
RHEL 7 STIG v1 updates for openstack-ansible-security
·204 words·1 min
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
·429 words·3 mins
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
·164 words·1 min
My new ThinkPad arrived this week and it is working well!
2016
OpenPOWER Summit Europe 2016 Recap
·443 words·3 mins
I was in Barcelona last week for two big events: the OpenStack Summit and the OpenPOWER Summit.
Power 8 to the people
·1000 words·5 mins
IBM Edge 2016 is almost over and I’ve learned a lot about Power 8 this week.
IBM Edge 2016: Day 2 Recap
·647 words·4 mins
Day two of IBM Edge 2016 is all done, and the focus has shifted to the individual.
IBM Edge 2016: Day 1 Recap
·905 words·5 mins
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
·733 words·4 mins
Most of the recent Fedora upgrades have been quite smooth.
My list of must-see sessions at Red Hat Summit 2016
·241 words·2 mins
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
·337 words·2 mins
UPDATE: The fixed version of mutter is now in the Fedora updates repository.
Recovering deleted Chrome bookmarks on Linux
·85 words·1 min
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
·301 words·2 mins
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
·194 words·1 min
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.
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)
·2757 words·13 mins
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
·73 words·1 min
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
·337 words·2 mins
BitTorrent Sync allows you to keep files synchronized between multiple computers or mobile devices.
Switching to systemd on Debian jessie
·255 words·2 mins
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.
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
·102 words·1 min
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!
·199 words·1 min
Want to work for a company that finds new approaches to traditional IT problems?