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ImageLayers.io is a new project from the team at CenturyLink Labs. This utility provides a browser-based visualization of user-specified Docker Images and theirImageLayers.io is a new project from the team at CenturyLink Labs. This utility provides a browser-based visualization of user-specified Docker Images and their layers. This visualization provides key information on the composition of a Doc
Most of the Docker use cases involve the use of containers for hosting long-running services. These are things like a web application, database or message queueMost of the Docker use cases involve the use of containers for hosting long-running services. These are things like a web application, database or message queue — services that are running continuously, waiting to service requests. Another
One of the exciting patterns we have been utilizing and working on within the Panamax project is the ability to use Docker containers to perform a functionalOne of the exciting patterns we have been utilizing and working on within the Panamax project is the ability to use Docker containers to perform a functional workflow or a series of asynchronous tasks in the background. Recently, I ran across
[00:35] Instead of starting with the controversy, let's talk about the tech. What does Rocket do? Rocket is a container runtime, which means a few things. The first is that it downloads images of the application over the internet, and in future versions it will verify those, and it runs those inside of a container. A lot of people have a good sense of what a container is, but in simple terms a con
Tutorials and News About Docker, CoreOS, and Other New TechnologyIn my previous article I described the Docker image cache and how Docker decides that a particular layer needs to be rebuilt when you do a docker build. Now, let’s build on that knowledge and discuss some strategies for making the Dockerfile code/build/test cycle as fast and reliable as possible. Top-to-Bottom This one should be pret
Helping Developers do Ops Easier“Panamax allows developers to go from zero to pre-packaged, multi-container Docker environments in minutes. The web interface and overall user experience is impressive.” –Gabriel Monroy, creator of Deis Docker is an amazing tool, but it remains notoriously hard to use to build multi-container micro-service architected applications. That is until today. Today, I am p
Helping Developers do Ops EasierFor Docker deployments, CoreOS is powerful but can be complex to setup. Fig is simple, but hard to scale to multiple servers. This blog post will show you how to bridge the gap between building complex multi-container apps using Fig and deploying those applications into a production CoreOS system. Complete Multi-Container Fig App In last week’s blog post, we covered
Helping Developers do Ops EasierDocker images can get really big. Many are over 1G in size. How do they get so big? Do they really need to be this big? Can we make them smaller without sacrificing functionality? Here at CenturyLink Labs we’ve spent a lot of time recently building different docker images. As we began experimenting with image creation one of the things we discovered was that our cus
Helping Developers do Ops EasierThis morning’s keynote from Solomon Hykes was inspiring. Just after the keynote, Solomon told me he was really nervous. But if he was, it didn’t show. The way they are building out their ecosystem is as equally inspiring as Solomon’s speech this morning. Today, there were three new projects announced from Docker: libswarm libchan libcontainer And two “secret” Docker
Helping Developers do Ops EasierFlynn and Deis are two Docker-related open source projects that I find incredibly promising, so much so that I included both of them in my list of the Top 10 open-source Docker projects at numbers 1 and 2, respectively, and I stand by that decision. What I love about both Flynn and Deis is that they’re highly ambitious. Both openly describe themselves as PaaS platfo
Helping Developers do Ops EasierDealing with uploaded content sucks in the cloud. Persistent filesystem is one of the hardest parts of running a CMS or blog in the cloud. If you have ever tried running WordPress or Drupal on Docker or a PaaS environment before, you know what I am talking about. Each container or dyno is ephemeral (goes away when the container goes away) and when the dyno goes away
Helping Developers do Ops EasierHeard of Docker, but still having trouble understanding it? Don’t worry, you are not alone. Today, I want to try to explain Docker in a few different ways. What Isn’t Docker? Before we talk about what Docker is, I will talk about what it isn’t. What is the negation of Docker? What are it’s limits? What can’t Docker do? Docker is NOT a Linux Container technology (lik
Helping Developers do Ops EasierWhat’s the next big thing in Docker? It just might be desktop apps. Did you know Docker can be used for everyday apps, not just web apps and database containers anymore? Here are just 5 of the most creative ways we have seen Docker used for things that don’t relate to coding or DevOps at all. Skype in Docker (container: tomparys/skype) Yes, Skype. Did you know that
Helping Developers do Ops EasierIn a post-Heartbleed world, even if you trust a company to do all security processes correctly, that might not be good enough. Security has become the responsibility of the user, not just the providers. Luckily, Docker gives us an easy way to encapsulate and reduce the attack footprint for many of the tools we use everyday. If you are using Windows, you might look i
Helping Developers do Ops EasierThe Hack programming language is the new hotness. Now that Facebook uses it for basically everything, every new startup is wondering if they should start using it too. But how do you even get started? What if I told you that you could be running a Hack server on your laptop in 30 seconds with Docker? $ brew install boot2docker # if you are on OS X $ boot2docker up #
Helping Developers do Ops EasierNavigating the ever-changing Docker ecosystem can be difficult, so we at CenturyLink would like to make it easier for you. A few weeks ago, I wrote about the top 10 startups using Docker. This week we are talking about the top 10 open-source projects using Docker. I will group them to highlight what each project focuses on. Table of Contents 1. Flynn.io 2. Deis 3.
Helping Developers do Ops EasierI am sure you have heard of Docker, but have you ever actually deployed a real app on it? How would you even start to move Heroku’s 4+ million apps into Docker Containers? Not many people have even tried. Building an app on Docker can be incredibly hard and frustrating. Not like Heroku where everything is taken care of for you. With Docker, you have to learn about D
Helping Developers do Ops EasierDocker is a new technology gold rush. Docker, Inc. just raised another $15M in venture capital, and It seems like a new Docker-based projects and startups seem to pop up every week. I wanted to highlight 10 of them that have caught my eye lately. I will group them to highlight what each startup focus on, but many of them do multiple things. Table of Contents 1. Stac
Helping Developers do Ops EasierIn last week’s post, we talked about how to create a 2-container application with Docker. Now we want to use a brand new project called Serf (from the makers of Vagrant) to have the containers learn about each other automatically. Serf uses gossip-based membership to create a decentralized solution for service discovery and orchestration that is lightweight, highly
Helping Developers do Ops EasierBrian Morearty recently gave a lightning talk at Twitter HQ about Docker. You should really check out his slides, they are fun and have a lot of character. He also runs a hands-on training course for Docker. But as a reference chart, here are the 15 tips he suggests: Getting the id of the last-run container You could do this: $ ID=$(docker run ubuntu echo hello worl
Helping Developers do Ops EasierThe #1 problem faced by people trying to use Docker in production today is how to run multi-server Docker apps. Docker’s linking mechanism only works within a single-host environment, so if (for example) you want to link your database to your wordpress, they have to be on the same host. But there is a new ops pattern being established to fix this problem. It is call
What's Vagrant? A cross-platform tool that lets you specify Virtual Machines (as a Vagrantfile) to deploy to a hypervisor (like VirtualBox on your laptop orWhat’s Vagrant? A cross-platform tool that lets you specify Virtual Machines (as a Vagrantfile) to deploy to a hypervisor (like VirtualBox on your laptop or vSphere or Hyper-V at work). What’s Docker? A Linux-only tool that lets you specify Lin
List of the top 10 open-source projects using Docker and what they do grouped to highlight what each project focuses on.Navigating the ever-changing Docker ecosystem can be difficult, so we at CenturyLink would like to make it easier for you. A few weeks ago, I wrote about the top 10 startups using Docker. This week we are talking about the top 10 open-source projects using Docker. I will group th
In this series of blog posts, we have progressively built increasingly complex Docker-based applications. We started with a simple 2-container Docker app. ThenIn this series of blog posts, we have progressively built increasingly complex Docker-based applications. We started with a simple 2-container Docker app. Then we built a 3-container decentralized Docker app with Serf. Today we are building
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