Using virtiofs with libvirt/virt-install

 Posted on September 8, 2023  |  dustymabe

Recently we switched our 9p filesystem usage in CoreOS Assembler to use virtiofs. This is the technology behind a lot of new lightweight container VM technology like kata-containers and libkrun, but can also be easily used with libvirt. Running as non-root using qemu:///session Currently the virtiofs integration doesn’t work as non-root via a qemu:///session connection. There is an oustanding RFE for this upstream and downstream in RHEL that can be followed for updates. [Read More]
libvirt virtiofs 

Columbia University and Fedora CoreOS

 Posted on August 1, 2023  |  dustymabe

Earlier this summer I spoke at the Fedora 38 release party about Fedora CoreOS. As part of this I had the privilege of giving the presentation alongside Marc Pusey from Columbia University. Marc talked about how Columbia University uses Fedora CoreOS and his experience participating in the Fedora and Fedora CoreOS communities. It was a real treat and quite nice to see Fedora CoreOS being applied in such diverse ways for research and learning. [Read More]
coreos fedora community 

NetworkManager: Limiting Bond Subordinate devices by MAC Address

 Posted on March 16, 2023  |  dustymabe

Someone recently asked me about locking down a bond to specific NIC devices within the machine. Specifically they were concerned with the sometimes unpredictable nature of NIC naming in Linux. While there has been a lot of effort to make NIC naming more predictable, it turns out with the networking configuration stack we are using in Fedora/RHEL (NetworkManager) you don’t even really need to care about the NIC device names if you know the MAC Addresses of the interfaces you want to use. [Read More]
coreos fedora networkmanager 

Running FCOS on your Raspberry Pi 4

 Posted on November 2, 2021  |  dustymabe

Note: A more permanent version of this tutorial exists in the Fedora CoreOS documentation. Fedora CoreOS recently started producing 64-bit ARM (aarch64) artifacts. These images can be used as the Operating System for the Raspberry Pi 4 device. Before trying to get FCOS up and running on your Raspberry Pi4 you’ll want to Update the EEPROM to the latest version and choose how you want to boot the Raspberry Pi 4. [Read More]
coreos fedora aarch64 

CoreOS install via Live ISO --copy-network

 Posted on November 18, 2020  |  dustymabe

A couple of us recently gave an update to our Customer Experience team at Red Hat on the improvements that were made in Red Hat CoreOS for OpenShift 4.6. My part of the presentation focused on the new Live ISO that is now used for Fedora/Red Hat CoreOS installations and also the improvements that we made for being able to copy the install environment networking configuration into the installed system via coreos-installer --copy-network. [Read More]
coreos fedora 

GCP Quickstart Guide for OpenShift OKD

 Posted on October 7, 2020  |  dustymabe

Introduction I recently did a blog post series. showing how to get started with OpenShift OKD on Fedora CoreOS for DigitalOcean. For that series I wrote a script to do most of the heavy lifting because DigitalOcean isn’t a native supported platform by the OpenShift installer. Today I’ll show off how to get started in GCP, which is supported natively by the OpenShift installer. This makes it much easier to get started because most of the heavy lifting (including infrastructure bringup) is done by the installer itself. [Read More]
kubernetes  openshift  okd  fedora  coreos  gcp 

OpenShift OKD on Fedora CoreOS on DigitalOcean Part 4: Recorded Demo

 Posted on September 28, 2020  |  dustymabe

NOTE: The fourth post of this series is available here. This blog post is the fifth in a series that illustrates how to set up an OpenShift OKD cluster on DigitalOcean. Back on August 17th I highlighted this blog post series with a presentation and demo for the OKD working group’s Demo Marathon. The video is posted on YouTube and also available below. If you’re interested take some time and watch the whole process work and see a cluster up and running at the end. [Read More]
kubernetes  openshift  okd  fedora  coreos  digitalocean 

OpenShift OKD on Fedora CoreOS on DigitalOcean Part 3: Upgrading

 Posted on September 27, 2020  |  dustymabe

Introduction NOTE: The third post of this series is available here. This blog post is the fourth in a series that illustrates how to set up an OpenShift OKD cluster on DigitalOcean. The third post in the series covered further configuration of a cluster once it’s already up and running. At this point you should have a cluster up and running and configured with custom TLS certificates and user login’s outsourced to some other identity management service. [Read More]
kubernetes  openshift  okd  fedora  coreos  digitalocean 

OpenShift OKD on Fedora CoreOS on DigitalOcean Part 2: Configuration

 Posted on August 23, 2020  |  dustymabe

Introduction NOTE: The second post of this series is available here. This blog post is the third in a series that illustrates how to set up an OpenShift OKD cluster on DigitalOcean. The second post in the series covered the automated deployment and teardown of a cluster using the digitalocean-okd-install script. At this point you should have a cluster up and running and ready to be further customized. Set Up Custom TLS Certificates In the first post in this series we mentioned that you may want to have valid certificates for your cluster. [Read More]
kubernetes  openshift  okd  fedora  coreos  digitalocean 

OpenShift OKD on Fedora CoreOS on DigitalOcean Part 1: Deployment

 Posted on August 13, 2020  |  dustymabe

Introduction NOTE: The first post of this series is available here. This blog post is the second in a series that illustrates how to set up an OpenShift OKD cluster on DigitalOcean. The first post in the series covered some background information and pre-requisites needed for deploying a cluster. At this point you should have chosen the domain for your cluster, set up your registrar to point to DigitalOcean nameservers, installed all necessary software (doctl, openshift-install, oc, aws cli, etc. [Read More]
kubernetes  openshift  okd  fedora  coreos  digitalocean