Intro
As part of the Container Tools team at Red Hat I'd like to highlight a feature of Atomic App: support for execution via OpenShift's cli command oc new-app.
The native support for launching Nulecules means that OpenShift users can easily pull from a library of Atomic Apps (Nuleculized applications) that exist in a Docker registry and launch them into OpenShift. Applications that have been packaged up in a Nulecule offer a benefit to the packager and to the deployer of the application. The packager can deliver one Nulecule to all users that supports many different platforms and the deployer gets a simplified delivery mechanism; deploying a Nulecule via Atomic App is easier than trying to manage provider definitions.
Archived-At Email Header From Mailman 3 Lists
By now most Fedora email lists have been migrated to Mailman3. One little (but killer) new feature that I recently discovered was that Mailman3 includes the RFC 5064 Archived-At header in the emails.
This is a feature I have wanted for a really long time; to be able to find an email in your Inbox and copy and paste a link to anyone without having to find the message in the online archive is going to save a lot of time and decrease some latency when chatting on IRC or some other form of real time communication.
Fedora Cloud Vagrant Boxes in Atlas
Cross posted with this_ fedora magazine post
Since the release of Fedora 22, Fedora began creating Vagrant boxes for cloud images in order to make it easier to set up a local environment for development or testing. In the Fedora 22 release cycle we worked out quite a few kinks and we are again releasing libvirt and virtualbox Vagrant boxes for Fedora 23.
Fedora 23: In the Ocean Again
Cross posted with this_ fedora magazine post
This week was the release week for Fedora 23, and the Fedora Project has again worked together with the DigitalOcean team to make Fedora 23 available in their service. If you're not familiar with DigitalOcean already, it is a dead simple cloud hosting platform which is great for developers.
Using Fedora on DigitalOcean
There are a couple of things to note if you are planning on using Fedora on DigitalOcean services and machines.
Getting Ansible Working on Fedora 23
Cross posted with this_ fedora magazine post
Inspired mostly from a post_ by Lars Kellogg-Stedman.
Intro
Ansible is a simple IT automation platform written in python that makes your applications and systems easier to deploy. It has become quite popular over the past few years but you may hit some trouble when trying to run Ansible on Fedora 23.
kubernetes skydns setup for testing on a single node
Intro
Kubernetes is (currently) missing an integrated dns solution for service discovery. In the future it will be integrated into kubernetes (see PR11599) but for now we have to setup skydns manually.
I have seen some tutorials on how to get skydns working, but almost all of them are rather involved. However, if you just want a simple setup on a single node for testing then it is actually rather easy to get skydns set up.
F23 Cloud Base Test Day September 8th!
cross posted from this_ fedora magazine post
Hey everyone! Fedora 23 has been baking in the oven. The Fedora Cloud WG has elected to do a temperature check on September 8th.
For this test day we are going to concentrate on the base image. We will have vagrant boxes (see this page for how to set up your machine), qcow images, raw images, and AWS EC2 images. In a later test day we will focus on the Atomic images and Docker images.
Installing/Starting Systemd Services Using Cloud-Init
Intro
Using cloud-init to bootstrap cloud instances and install custom sofware/services is common practice today. One thing you often want to do is install the software, enable it to start on boot, and then start it so that you don't have to reboot in order to go ahead and start using it.
The Problem
Actually starting a service can be tricky though because when executing cloud-init configuration/scripts you are essentially already within a systemd unit while you try to start another systemd unit.
Fedora BTRFS+Snapper PART 2: Full System Snapshot/Rollback
History
In part 1 of this series I discussed why I desired a computer setup where I can do full system snapshots so I could seamlessly roll back at will. I also gave an overview of how I went about setting up a system so it could take advantage of BTRFS and snapper to do full system snapshotting and recovery. In this final post of the series I will give an overview of how to get snapper installed and configured on the system and walk through using it to do a rollback.
Fedora BTRFS+Snapper PART 1: System Preparation
The Problem
For some time now I have wanted a linux desktop setup where I could run updates automatically and not worry about losing productivity if my system gets hosed from the update. My desired setup to achieve this has been a combination of snapper and BTRFS, but unfortunately the support on Fedora for full rollback isn't quite there.