Running an etcd 2.0 Cluster on Ubuntu 14.04
In this post, I’m going to show you how to set up a cluster of three nodes running etcd 2.0 (specifically, etcd 2.0.9). While I’ve discussed etcd before, that was in the context of using etcd with CoreOS Linux. In this case, I’ll use Ubuntu 14.04 as the base OS, along with the latest released version of etcd.
To help you follow along, I’ve created a set of files that will allow you to use Vagrant to turn up an etcd 2.0 cluster on Ubuntu 14.04 (on your laptop, if so desired). You can find all these files in the “etcd-2.0” directory of my learning-tools GitHub repository.
Installing the Base OS
You don’t need anything special when setting up etcd; a straightforward Ubuntu Server 14.04 x64 installation will work just fine. If you’re using the files in my learning-tools repository, you’ll see that Vagrant simply turns up a VM based on a plain-jane Ubuntu 14.04 box. If you’re building this from scratch (why?!), simply create a VM and install Ubuntu 14.04 into it. As long as it has Internet connectivity, that’s all that’s needed.
Installing etcd
Installing etcd Continue reading
Docker Tutorial 5 – Basic Networking
This is a casual Docker tutorial series. We started out first with very simple sessions on how to install and use the docker run command. In future videos we will hit more advanced topics. This fifth video talks about … ContinuedDocker Announces $95m Series D Funding Round
This morning, we announced a $95M Series D funding round that will help ensure that Docker can deliver on an ambitious set of long term priorities. More importantly, we believe that it will enable us to deliver on product, support, … ContinuedAnsible at PyCon – Achieving Continuous Delivery: An Automation Story (Video)
James Cammarata spoke at PyCon 2015 this past week and presented his talk, Achieving Continuous Delivery: An Automation Story.
And his slides:
Docker Tutorial 4 – More Run With a Couple of Extra Goodies
This is a casual Docker tutorial series. We started out first with very simple sessions on how to install Docker, the docker run command and had fun with volumes. In future videos we will hit more advanced topics. In this fourth video … ContinuedDetecting empty files in awk
It's not straightforward, but it can be done.Cisco VIRL Exclude From Launch
One of the few pet-peeves with Cisco’s VIRL has been waiting for a bunch of things to start, when I just needed a couple from that simulation. Not sure if this is a new update though it’s...[[ Summary content only, you can read everything now, just visit the site for full story ]]
The Plain Text Productivity Experiment
I’m a big fan of plain text-based formats and tools, for a variety of reasons. As a result, I’ve moved almost all of my writing into plain text formats, primarily Markdown (MultiMarkdown, to be specific), and I recently spent a couple of months experimenting to see if a plain text-based productivity system would work for me as well. Here’s what I found.
<aside>I won’t go into a great amount of detail on why I wanted to see if a plain text-based productivity system would work, as I’ve discussed the merits of using plain text-based formats before (platform portability, application portability, longevity, etc.).</aside>
I first looked at Gina Trapani’s todo.txt system, which is plain text-based and has a thriving community built around its format. The todo.txt format is very straightforward and very simple—almost too simple. After trying it for a short while I found that it just wasn’t flexible enough to meet my needs.
A few weeks later, I stumbled on the TaskPaper format (named after the Mac app of the same name). Also plain text-based, the TaskPaper format also had a thriving community of applications and tools built around the format, and while also Continue reading
DockerCon CFP Summary
Our DockerCon 2015 call for papers closed last week, and we’d like to sincerely thank the 338 individuals who submitted talks. These submissions are further proof of a bright, witty and extremely talented community that surrounds Docker. We are very … ContinuedYour Docker agenda in April
March has been an incredibly busy month for the Docker Community with all of the birthday celebrations and open-source-a-thons, and it’s not over yet. You have until April 19th to make a contribution that counts toward Docker’s donation to the … ContinuedAnsible and Containers: Why and How
Everyone loves the promise of containers.
More specifically: everyone loves the promise of a world where they can build an application on their laptop, and have that application run exactly the same way in every environment -- from their laptop all the way to production, and at every step in between.
That's still a holy grail, though. In the meantime, people seem to be looking for practical ways to get all of the advantages of containers -- consistency, lightweight environments, application segregation, and so on -- while still maintaining the flexibility required to work with the many environments that are not amenable to containerization.
Which may explain why so many people... wow, just a lot of people... seem to be talking about Ansible and containers together:
So why are people using Ansible with Docker and other container formats? A few reasons:
* Ansible playbooks are portable. If you build a container with a pure Dockerfile, it means that the only way you can reproduce that application is in a Docker container. If you build a container with an Ansible playbook, you can then reproduce a very similar environment in Vagrant, or in a cloud instance of your choice, Continue reading
Announcing Webhook Respository Subscriptions
Back in December at DockerCon Europe, we announced chained Webhooks. This enabled you to configure your deployment processes to continue only if the previous Webhook completed successfully. Today we are excited to announce expanded Webhook capabilities. You can now set … ContinuedThree new Official Images added in March
We’re excited to announce three new Official Images that we added to Docker Hub in March. These images are part of Docker’s mission to add robust, enterprise-ready development technologies to the Docker ecosystem. Check them out: Alpine Alpine Linux is a … ContinuedDocker Tutorial 3 – Fun With Volumes
This is a casual Docker tutorial series. We started out first with very simple sessions on how to install Docker and use the docker run command. In future videos we will hit more advanced topics. This third video talks … ContinuedAnsibleFest NYC TIckets Now on Sale
We are excited to announce the date for AnsibleFest NYC 2015
When: June 4th
Where: Conrad Hotel NYC - 102 North End Ave, New York, NY 10282
AnsibleFest is a day-long conference bringing together Ansible users, developers and industry partners to share best-practices, case studies and Ansible news. If you are a developer, sysadmin, operations director or devops practioner, AnsibleFest is for you.
Past speakers have included Twitter, Google, Rackspace, EdX, HP, Twilio, Cumulus Networks, Telescope.tv and many more - as well as members of the Ansible Team.
SPECIAL OFFER: Buy an Ansible Tower Starter Kit and get 4 free tickets. Simply enter the promo code festnyc at checkout. BUY NOW
If you are interested in speaking, please contact [email protected]
If you are interested in sponsoring, please email [email protected] for details
Be sure to follow us on Twitter to stay informed of all of the AnsibleFest news. We'll be announcing some special surprises in the weeks leading up to the event.
Videos from the biggest docker meetup ever: Clocker, Storage Drivers, Docker on the Desktop, Powerstrip
About three weeks ago, the Docker London user group hosted one of, if not THE biggest Docker meetup EVER since the release of Docker as open source two years ago. With about 300 attendees in the room and an amazing speakers lineup composed … ContinuedDocker Online Meetup: Kitematic in action
Three weeks ago, we announced that Kitematic, an intuitive graphical user interface (GUI) for running Docker containers on your Mac, was joining the Docker family. Today we’re happy to share with you the video recording from the last Docker Online Meetup about Kitematic (for those … ContinuedWork Smarter, Not Harder with Security Baseline Configuration Automation
Many security baseline processes are rife with challenges. Whether organizations use scripts to manually brute-force their system-level compliance baseline, or perhaps leverage the all-too-common “Gold Disk” approach, routine security baseline compliance remediation remains largely an unsolved and constant challenge even for the most mature of IT organizations.
Even for organizations that are using an existing management tool to help with their security baselining, issues frequently arise around how to identify systems that require baselining as they come online, and then immediately recognize what needs to be done on those systems in order to verify their compliance.
To add to the challenge, applying a baseline to a newly deployed server or application is one thing, but validating compliance throughout the server and application lifecycle typically requires a separate set of tools or processes, or at very least scripts that are smart enough to smartly change the existing state of a server or application without impacting its availability.
MindPoint Group knew there was a better way. The security folks at MindPoint group are leveraging the power and simplicity of Ansible to bring automation to the problem of security baselines. And thanks to Ansible’s design, the work that MindPoint group has done is Continue reading