Kubernetes is an open-source system for automating deployment, scaling, and management of containerized applications. I’m using it for Nousmotards and decided to build an Ansible role for it to make it simpler to deploy. Why did I built it as other projects like Kargo already exists? I just wanted a simple and maintainable role based on CoreOS official documentation. That’s what I did: This role bootstrap a Kubernetes cluster based on CoreOS Container Linux for production usages.

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CoreOS is a lightweight Linux operating system designed for clustered deployments providing automation, security, and scalability for your most critical applications. I’ve been playing with CoreOS to replace Debian hosts which run Docker containers on Nousmotards project. CoreOS helps on simplifying bare metal deployment and avoid managing OS upgrade. As I’m still an Ansible lover, I’ve made 2 roles: CoreOS Ansible: Ansible role to deploy pypy to CoreOS to be able to get Ansible prerequisites CoreOS: Ansible CoreOS role to deploy CoreOS on bare metal servers If you want to quickly look at the result:

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Some of you may not be familiar with the terms “Rolling upgrade” or “Rolling restart". This is the action of upgrading or restarting a cluster without service interruption (alias zero downtime). In most cases, this is done node by node, but in fact it depends of the technology you’re managing and the number of active nodes in your cluster. At Nousmotards we have several Java Spring Boot applications running. Restarting one application can take up to 1 min.

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Hi all ! Long time since last blog post ! I’m using Jenkins with Ansible on my Nousmotards project for building docker containers or deploying into production. You may noticed that you’ve no Ansible color when running it into Jenkins! The simple way to correct it is to export an environment variable in your Jenkins job: export ANSIBLE_FORCE_COLOR=true Now that’s pretty cool! However, you may also noticed that there’s some kind of lags on the console when you want to see a real time console log on Jenkins.

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As I wanted to upgrade it and because it has been asked several time, I upgraded the consul-template Ansible role to manage official binaries (and upgrades). Here are the new vars: consul_template_version:'0.11.0'consul_template_arch:'linux_amd64'consul_template_http_src:"https://github.com/hashicorp/consul-template/releases/download/v{{consul_template_version}}/consul_template_{{consul_template_version}}_{{consul_template_arch}}.zip" You can of course find the role to Ansible Galaxy: https://galaxy.ansible.com/deimosfr/consul-template/ I hope you’ll enjoy this new version :-)

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The Ansible meetup ended ! That was really nice for my first one. I had really great feedbacks and liked the questions when ended. More than that I met nice people after the meetup and could have interresting discussions :-). I’m really happy about it. For those who would like to review the slides, you can find them here: http://nousmotards.github.io/ansible-meetup-0915/ If you want to watch the video: http://www.infoq.com/fr/presentations/reseau-social-motard or view the PDF version here:

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A long long time since my last blog post ! I didn’t had the time to make one because of the time I spent on building Nousmotards infrastructure. If you’re interested in how I built the infrastructure, come and see us on the Ansible Meetup next Tuesday 😉 The slides and video of the Meetup will be made and available on InfoQ. If you’re a French biker, do not hesitate anymore!

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