Tags: cluster

Supercomputing under a New Lens: A Sandia-Developed Benchmark Re-ranks Top Computers

A Sandia National Laboratories software program now installed as an additional test for the widely observed TOP500 supercomputer challenge has become increasingly prominent. The program’s full name — High Performance Conjugate Gradients, or HPCG — doesn’t come trippingly to the tongue, but word is...
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A Look Into the Kubernetes Master Components

This blog post looks at the most important control plane components of a single Kubernetes master node — etcd, the API server, the scheduler and the controller manager — and explains how they work together. Although other components, such as DNS and the dashboard, come into play in a production...
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The 4 Major Tenets of Kubernetes Security

In a previous article, we learned about the threats to a Kubernetes deployment that may result in a multitude of compromises and undesirable scenarios. With these threat models in mind, we can now explore Kubernetes security along four major tenets: authentication and authorization resource...
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Kelsey Hightower
Kelsey Hightower showed how to install a Kubernetes cluster with the help of Kubernetes Engine assistant and a smartphone.

Kubernetes The Smart Way

Kelsey Hightower, Developer Advocate at Google, kicked off the KubeCon + CloudNativeCon event in Austin with an opening keynote in which he demonstrated Kubernetes' ease of use with the help of his smartphone. Apart from commending the audience for making Kubernetes the boring-in-a-good-way...
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Kubernetes for Dev Infrastructure

Kubernetes is one of the hottest open-source projects these days. It’s a production-grade container orchestration system, inspired by Google’s own Borg and released into the wild in 2014. Thousands of developers joined the project since then, and now it’s becoming an industry standard for running...
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Reckoning the Spectre and Meltdown Performance Hit for HPC

While no one has yet created an exploit to take advantage of the Spectre and Meltdown speculative execution vulnerabilities that were exposed by Google six months ago and that were revealed in early January, it is only a matter of time. The patching frenzy has not settled down yet, and a big...
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Ops Checklist for Monitoring Kubernetes at Scale

By design, the Kubernetes open source container orchestration engine is not self-monitoring, and a bare installation will typically only have a subset of the monitoring tooling that you will need. In a previous post, we covered the five tools for monitoring Kubernetes in production, at scale, as...
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Kubernetes Node

A Kubernetes Node is a logical collection of IT resources that supports one or more containers. Nodes contain the necessary services to run Pods (which are Kubernetes's units of containers), communicate with master components, configure networking and run assigned workloads. A Node can host one or...
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​Linux Totally Dominates Supercomputers

Linux rules supercomputing. This day has been coming since 1998, when Linux first appeared on the TOP500 Supercomputer list. Today it finally happened: All 500 of the world's fastest supercomputers are running Linux. The last two non-Linux systems, a pair of Chinese IBM POWER computers running AIX...
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China Pulls Ahead of U.S. in Latest TOP500 List

The fiftieth TOP500 list of the fastest supercomputers in the world has China overtaking the US in the total number of ranked systems by a margin of 202 to 143. It is the largest number of supercomputers China has ever claimed on the TOP500 ranking, with the US presence shrinking to its lowest...
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