InfiniBand network
Learn how ProfitBricks speeds data center transfers in this Vault conference preview.

Faster Data Center Transfers with InfiniBand Network Block Device

The storage team of ProfitBricks has been looking for a way to speed transfers between VMs on compute nodes and physical devices on storage servers, connected via InfiniBand, in their data centers. As a solution, they developed the IBNBD driver, which presents itself as a block device on the client...
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Workstation Security Checklist
In this series, we’ll lay out a set of baseline recommendations for Linux workstation security. Here are some tips to ensure your pre-boot environment is up to snuff.

4 Security Steps to Take Before You Install Linux

Learn how to work from anywhere and keep your data, identity, and sanity. DOWNLOAD NOW Systems administrators who use a Linux workstation to access and manage IT infrastructure -- whether from home or at work --  are at risk of becoming attack vectors against the rest of the infrastructure. In this...
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Open source practices
Enterprises are ramping up adoption of open source software and increasingly creating their own open source tools.

As the Software Supply Chain Shifts, Enterprise Open Source Programs Ramp Up

Today’s software supply chain is fundamentally different than it was only a few years ago, and open source programs at large enterprises are helping to drive that trend. According to Sonatype’s 2016 State of the Software Supply Chain enterprises are both turning to existing open source projects to...
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A Hacker’s Guide to Kubernetes Networking

This post is the first in a series. I’ll share how Kubernetes and the Container Networking Interface works with some hacking tricks to learn its internals and manipulate it. Future posts will cover high-performance storage and inter-process communications (IPC) tricks we use with containers....
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NPM or Yarn? Node.js Devs Pick Their Package Manager

Mere months since it was open-sourced by Facebook, Yarn has NPM on the run. The upstart JavaScript package manager has gained a quick foothold in the Node.js community, particularly among users of the React JavaScript UI library. Known for faster installation, Yarn gives developers an improved...
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What’s a Linked List, Anyway? [Part 1]

Regardless of which language we start coding in, one of the first things that we encounter are data structures, which are the different ways that we can organize our data; variables, arrays, hashes, and objects are all types of data structures. But these are still just the tip of the iceberg when...
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System Hardening with Ansible

The DevOps pipeline is constantly changing.  Therefore relevant security controls must be applied contextually. We want to be secure, but I think all of us would rather spend our time developing and deploying software. Keeping up with server updates and all of the other security tasks is like...
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With Azure Container Service, Microsoft Works to Make Container Management Boring

Earlier this week, Microsoft made the Kubernetes container orchestration service generally available on Azure Container Service, alongside the other predominant container orchestration engines Docker Swarm and Mesosphere’s Data Center Operating System (DC/OS). The move is one more step in building...
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A Brief History of Blockchain

We’re now in the midst of another quiet revolution: blockchain, a distributed database that maintains a continuously growing list of ordered records, called “blocks.” Consider what’s happened in just the past 10 years: The first major blockchain innovation was bitcoin, a digital currency...
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DoD Launches “,” an Experiment in Open Source

The Department of Defense (DoD) has announced the launch of, an open source initiative that allows software developers around the world to collaborate on unclassified code written by federal employees in support of DoD projects. DoD is working with GitHub, an open source platform, to...
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