Starting systemd services without blocking

Tue 02 December 2014 by Lars Kellogg-Stedman Tags systemd

Recently, I've been playing around with Fedora Atomic and Kubernetes. I ran into a frustrating problem in which I would attempt to start a service from within a script launched by cloud-init, only to have have systemctl block indefinitely because the service I was attempting to start was dependent on ...

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Fedora Atomic, OpenStack, and Kubernetes (oh my)

Mon 24 November 2014 by Lars Kellogg-Stedman Tags openstack kubernetes fedora atomic

While experimenting with Fedora Atomic, I was looking for an elegant way to automatically deploy Atomic into an OpenStack environment and then automatically schedule some Docker containers on the Atomic host. This post describes my solution.

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Creating a Windows image for OpenStack

Sat 15 November 2014 by Lars Kellogg-Stedman Tags openstack windows

If you want to build a Windows image for use in your OpenStack environment, you can follow the example in the official documentation, or you can grab a Windows 2012r2 evaluation pre-built image from the nice folks at CloudBase.

The CloudBase-provided image is built using a set of scripts and configuration files that CloudBase has made available on GitHub.

The CloudBase repository is an excellent source of information, but I wanted to understand the process myself. This post describes the process I went through to establish an automated process for generating a Windows image suitable for use with OpenStack.

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Building Docker images with Puppet

Wed 22 October 2014 by Lars Kellogg-Stedman Tags puppet docker

I like Docker, but I'm not a huge fan of using shell scripts for complex system configuration...and Dockerfiles are basically giant shell scripts.

I was curious whether or not it would be possible to use Puppet during the docker build process. As a test case, I used the ssh ...

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Docker networking with dedicated network containers

Mon 06 October 2014 by Lars Kellogg-Stedman Tags docker networking kubernetes

The current version of Docker has a very limited set of networking options:

  • bridge -- connect a container to the Docker bridge
  • host -- run the container in the global network namespace
  • container:xxx -- connect a container to the network namespace of another container
  • none -- do not configure any networking

If you ...

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