A Tutorial Introduction to Kubernetes

Kubernetes is the hottest kid on the block among container orchestration tools right now. I started writing this post when we decided to go with Kubernetes at Twyla a year ago, and since then, the developments in the ecosystem have been simply overwhelming. In my opinion, the attention Kubernetes gets is completely deserved, due to the following reasons:

It is a complete solution that is based on a fundamental set of ideas. These ideas are explained in the Borg, Omega and Kubernetes article that compares the consecutive orchestration solutions developed at Google, and the lessons learned.
While it is container-native, Kubernetes is not limited to a single container platform, and the container platform is extended with e.g. networking and storage features.
It offers an open and well-designed API, in addition to various patterns that suit differing workflows. The wonderful thing is that there is a very well-governed community process whereby the API is


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ctop – Top-like Interface for Monitoring Docker Containers

ctop is a free open source, simple and cross-platform top-like command-line tool for monitoring container metrics in real-time. It allows you to get an overview of metrics concerning CPU, memory, network, I/O for multiple…
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WebSub: Open protocol for distributed pub–sub communication on the internet

Abstract
WebSub provides a common mechanism for communication between publishers of any kind of Web content and their subscribers, based on HTTP web hooks. Subscription requests are relayed through hubs, which validate and verify the request. Hubs then distribute new and updated content to subscribers when it becomes available. WebSub was previously known as PubSubHubbub.
Status of This Document

This section describes the status of this document at the time of its publication. Other documents may supersede this document. A list of current publications and the latest revision of this technical report can be found in the technical reports index at https://www.w3.org/TR/.

This document was published by the Social Web Working Group as a Recommendation.
Comments regarding this document are welcome. All interested parties are invited to provide implementation and bug reports and other comments through the Working Group’s Issue tracker. These will be discussed by


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