DevOps and Development

Spark Streaming Guide for Beginners

March 24, 2021

Learn how Spark Streaming enriches the Spark API for large scale data streaming and processing with a step-by-step example of streaming Twitter data in Python.

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Install Elasticsearch on Kubernetes Using Helm Chart

March 18, 2021

There are several methods for deploying Elasticsearch and the rest of the ELK stack on Kubernetes. Using Helm and helm charts is the most straightforward one. This tutorial lists steps to install Elasticsearch, Kibana, and Metricbeat in Kubernetes using a helm chart template.

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What Is a Spark DataFrame?

March 16, 2021

Thanks to Spark's DataFrame API, we can quickly parse large amounts of data in structured manner. DataFrame API is available for Java, Python or Scala and accepts SQL queries.

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How to Generate a Self-Signed Certificate for Kubernetes

March 11, 2021

Testing Web UI clients whose API backend runs in a local Kubernetes cluster requires HTTPS access. This tutorial explains how to obtain HTTPS access by generating a self-signed certificate using cert-manager, CFSSL, Easy-RSA, and OpenSSL methods.

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How To Delete Helm Deployment And Namespace


This step-by-step tutorial teaches you how to delete a Helm deployment from a specific namespace and how to remove a Kubernetes cluster namespace.

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What is Helm? Helm and Helm Charts Explained


Helm automates application deployment to Kubernetes clusters. Helm provides a templating approach to deployment, which makes the process of going from testing to production a smoother experience.

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What is Istio? - Architecture, Features, Benefits and Challenges


Istio is an open-source service mesh implementation that manages communication and data sharing between microservices. In this article, learn more about the main Istio features, its architecture, and how it is implemented.

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How to Fix helm "has no deployed releases" Error

March 4, 2021

When upgrading from a failed deployment, Helm will produce a "helm has no deployed releases" error.
This tutorial covers different ways you can fix this error.

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How To Check TensorFlow Version

March 3, 2021

TensorFlow can be installed in many ways and there are many different versions and builds available. Learn how to check which version is installed on your machine.

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Python SciPy Tutorial - A Guide for Beginners

February 25, 2021

When NumPy is not enough, SciPy has you covered. SciPy is a Python library used for scientific computing. It includes advanced computation algorithms performed at lightning speed. Learn how to use it through examples.

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