News Category: Virtualization and Containers

Do Linux Distributions Still Matter with Containers?

There are two major trends in container builds: using a base image and building from scratch. Each has engineering tradeoffs. Some people say Linux distributions no longer matter with containers. Alternative approaches, like distroless and scratch containers, seem to be all the rage. It appears we...
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Why Data Scientists Love Kubernetes

Let's start with an uncontroversial point: Software developers and system operators love Kubernetes as a way to deploy and manage applications in Linux containers. Linux containers provide the foundation for reproducible builds and deployments, but Kubernetes and its ecosystem provide essential...
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Runc and CVE-2019-5736

This morning a container escape vulnerability in runc was announced. We wanted to provide some guidance to Kubernetes users to ensure everyone is safe and secure. What Is Runc? Very briefly, runc is the low-level tool which does the heavy lifting of spawning a Linux container. Other tools like...
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Why I Love containerd…and Docker!

I talk a lot about containerd. I write blog posts about it, speak at conferences about it, give introductory presentations internally at IBM about it and tweet (maybe too much) about it. Due to my role at IBM, I’ve helped IBM’s public cloud Kubernetes service, IKS, start a migration to use...
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Kubernetes: Tools for Operability

In this presentation, Bridget Kromhout discusses what containers and Kubernetes clusters are at a high level, looks into the practical application of open source tools to simplify cluster management, and shows how to deploy Kubernetes clusters in a repeatable and portable fashion. "You're probably...
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5 Open Source Tools to Upgrade your Next Kubernetes Project

Kubernetes is one of the most popular technologies around today. So, it’s no surprise that there are an awful lot of open source libraries, tools, and other assorted goodies out there on GitHub. We like to keep an eye on what’s fresh for developers, so today we’re taking a look at five different...
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Kubernetes Federation Evolution

Deploying applications to a kubernetes cluster is well defined and can in some cases be as simple as kubectl create -f app.yaml. The user’s story to deploy apps across multiple clusters has not been that simple. How should an app workload be distributed? Should the app resources be replicated into...
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How Docker Engine Works to Enable Containers

The modern container revolution started with Docker and its eponymous Docker Engine. Docker Engine is the runtime and tooling that enables container applications, defined by a dockerfile, to run on top of a host operating system in an isolated "container" section. "We are here because of docker...
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Critical Vulnerability Allows Kubernetes Node Hacking

Kubernetes has received fixes for one of the most serious vulnerabilities ever found in the project to date. If left unpatched, the flaw could allow attackers to take over entire compute nodes. “With a specially crafted request, users that are allowed to establish a connection through the...
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The State of Docker Container Documentation

We need to confront container documentation as the crucial, non-trivial problem that it is. TL;DR — As far as I can tell, there’s currently no way of providing documentation for specific containers that we could fairly call canonical, “best practice,” or even all that widely used. This blog post...
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