Cisco VIRL NXOSv NXAPI Update
Cisco officially announced the April release of Cisco VIRL the announcement and upgrade instructions can be found here. Some of the highlights from the upgrade are: ISOv is now up to version 15.2(2)T...[[ Summary content only, you can read everything now, just visit the site for full story ]]
Online Meetup: Docker Engine 1.6: labels, logging, builder, and more
In case you missed it, Docker 1.6 has been released last week and we announced major updates to Docker Engine, Registry, Compose, Swarm, and Machine. We released all these projects at the same time so you can test and roll … ContinuedDocker Tutorial 6 – Dockerfile (Part 1)
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. In this sixth video we cover … ContinuedRunning Photon on Fusion via Vagrant
Most of you have probably picked up on the news of VMware’s new container-optimized Linux distribution, code-named “Photon”. (More details here.) In this post, I’m going to provide a very quick walkthrough on running Photon on VMware Fusion via Vagrant. This walkthrough will leverage a Vagrant box for Photon that has already been created.
To make things easier, I’ve added a photon directory to my GitHub “learning-tools” repository. Feel free to pull those files down to make it easier to follow along.
I assume that you’ve already installed Vagrant, VMware Fusion, and the Vagrant plugin for VMware. If you haven’t, you’ll want to complete those tasks—and verify that everything is working as expected—before proceeding.
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Install an additional Vagrant plugin that enables Vagrant to better detect and interact with Photon using this command:
vagrant plugin install vagrant-guests-photonIf you don’t install this plugin, you’ll likely get a non-fatal error about Vagrant being unable to perform the networking configuration. (Review the GitHub repository for this plugin if you want/need more details. Also, note that a PR against Vagrant to eliminate the need for this plugin was opened and merged; this fix should show up in a future release of Vagrant.)
Start contributing to Docker in 5 easy steps
If you write code for a living, you’ve probably heard of Docker by now. You might have played around with it, and if you’re lucky, you may even have had the chance to use it to deploy systems in production. … ContinuedTips for Deploying NGINX (Official Image) with Docker
In the past year alone, the Docker community has created 100,000+ images and over 300+ million images have been pulled from Docker Hub to date. Over 20 million of these pulls came from the 70+ Official Images that Docker develops … ContinuedVMware News and the Expanding Minimalist OS Ecosystem
The Docker community saw expanded capabilities introduced today from VMware who showed support for the open source ecosystem with the announcement of two ecosystem projects – Project Photon, a Linux container OS and Project Lightwave, a container identity and access … ContinuedRunning an etcd-Backed Docker Swarm Cluster
In this post, I’ll build on a couple of previous posts and show you how to build your own Docker Swarm cluster that leverages etcd for cluster node discovery. This post builds on the information presented on how to run an etcd 2.0 cluster on Ubuntu as well as the information found in this post on running a Consul-backed Docker Swarm cluster.
To help you follow along, I’ve created a Vagrant environment that you can use to turn up the configuration described in this blog post. These files are found in the “docker-swarm-etcd” directory of my GitHub learning-tools repository. Feel free to use the files in this directory/repository to help with the learning process.
There are 3 major components to this configuration:
- A cluster of three Ubuntu 14.04 systems running etcd 2.0 (specifically, etcd 2.0.9, the last release as of this writing). This etcd cluster serves as a discovery back-end for Docker Swarm.
- A set of hosts running the Docker daemon (version 1.4.0 or higher, as required by Swarm). In this particular instance, I’m using CoreOS Linux (version 557.2.0 from the stable branch).
- A few containers running on the CoreOS hosts; Continue reading
Docker 1.6: Engine & Orchestration Updates, Registry 2.0, & Windows Client Preview
We are happy to announce updates to Docker Engine, Registry, Compose, Swarm, and Machine. We are releasing them all at the same time so you can test and roll them out together, and so that we can ship features that … ContinuedFaster and Better Image Distribution with Registry 2.0 and Engine 1.6
There has been incredible growth in the usage of Docker Hub: we have now served over 300 million pulls to developers around the world, and will soon be serving 100 million per month. The current generation of the Registry has … ContinuedEasily Configure Apps for Multiple Environments with Compose 1.2 and Much More
Today we’re very happy to announce the second release of Docker Compose, a tool for easily defining and running multi-container apps. Head straight to the install docs if you can’t wait to download and use it. Since we announced … ContinuedHighlights from the Docker Project’s first open-source-a-thon
Today we are nearing the end of the Docker Open-Source-a-Thon that kicked off with the Docker birthday party! Here’s an update about the fun times we’ve had so far. We have had over 20 fantastic events across the world, with … ContinuedRunning 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