Linux

How To Interact with Data in ElasticSearch Using CRUD Operations — step-by-step Linux tutorial on Progressive Robot

How To Interact with Data in ElasticSearch Using CRUD Operations

ElasticSearch is a flexible search implementation that can be accessed and configured programmatically in order to build complex search features into your application or website. In this guide, we will discuss how to create, read, update, and delete data from ElasticSearch using simple HTTP requests.

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How To Manage RAID Arrays with mdadm on Ubuntu 16.04 — step-by-step Linux tutorial on Progressive Robot

How To Manage RAID Arrays with mdadm on Ubuntu 16.04

In this guide, we discuss how to use Linux’s mdadm utility to manage RAID arrays and perform day-to-day administrative tasks. We cover how to start, stop, or remove RAID arrays, how to find information about both the RAID device and the underlying storage components, and how to adjust the RAID size and and hot spares to existing arrays.

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How To Manage Your Cluster with Chef and Knife on Ubuntu — step-by-step Linux tutorial on Progressive Robot

How To Manage Your Cluster with Chef and Knife on Ubuntu

`knife` is a command line tool packaged with Chef. You’ve likely already used knife to create and manage Chef cookbooks, data bags, or roles. This guide will introduce you to some new knife subcommands for issuing commands and getting information about your Chef cluster.

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How To Monitor Zabbix Alerts with Alerta on CentOS 7 — step-by-step Linux tutorial on Progressive Robot

How To Monitor Zabbix Alerts with Alerta on CentOS 7

Alerta is a web application used to consolidate and de-duplicate alerts from multiple monitoring systems and visualize them on a single screen. Alerta can integrate with many well-known monitoring tools like Nagios, Zabbix, Sensu, InfluxData Kapacitor, and…

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How To Move an Nginx Web Root to a New Location on Ubuntu 22.04 — step-by-step Linux tutorial on Progressive Robot

How To Move an Nginx Web Root to a New Location on Ubuntu 22.04

On Ubuntu, by default, the Nginx web server stores its documents in `/var/www/html`, which is typically located on the root filesystem with the rest of the operating system. Sometimes, though, it’s helpful to move the document root to another location, such as a separate mounted filesystem.

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