IT, Cloud & DevOps Blog

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

How To Create RAID Arrays with mdadm on Ubuntu 16.04

Linux’s mdadm utility can be used to turn a group of underlying storage devices into different types of RAID arrays. This provides various advantages depending on which RAID level is used. This guide will cover how to set up devices in the most common RAID configurations: RAID 0, 1, 5, 6, and 10.

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SLES 15 — go1.11 — vulnerability — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — go1.11 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 29 May 2020 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2019:2213-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-14809 Upstream summary: net/url in Go before 1.11.13 and 1.12.x before 1.12.8 mishandles malformed hosts in URLs, leading to an authorization bypass in some applications. […]

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Arch Linux — lib32-expat — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — lib32-expat — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201707-27 Related CVEs: CVE-2017-9233 CVE-2016-9063 Upstream summary: Type: denial of service. Status: Fixed. Affected: 2.2.0-1. Fixed in: 2.2.2-1. Group: AVG-305. Table of contents Symptom & Impact Environment & Reproduction Root […]

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How To Build a Weather App with Angular, Bootstrap, and the APIXU API — step-by-step Javascript tutorial on Progressive Robot

How To Build a Weather App with Angular, Bootstrap, and the APIXU API

[Angular](https://angular.io) is a front-end web framework that allows developers to build single-page applications modeled around a _model-view-controller_ (MVC) design. In this tutorial, you’ll create a weather app using Angular, Bootstrap, and the APIXU API. You’ll be able to type a location into a search form and on submission of that form, see the current weather details for that location displayed in your app.

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5 Configuraciones Comunes para tus Aplicaciones Web — step-by-step DevOps tutorial on Progressive Robot

5 Configuraciones Comunes para tus Aplicaciones Web

Cuando decidimos que arquitectura de servidor utilizar para nuestro enterno, hay muchos factores a considerar, como el rendimiento, escalabilidad, disponibilidad, costo y facilidad de administración. Aquí hay una lista de las configuraciones comunes de servidor, con una corta descripción en cada una, incluyendo pros y contras.

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Common Problems 121140

Debian 10 – Apache2 Fails with Address Already in Use – Port Conflict Resolution

🟠 High   ⏱ 5–30 min  Last verified: 28 May 2020 Affected versions: Debian 10 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & […]

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Common Problems 113518

Windows Server 2012 R2 — Update Install Stuck at 100 Percent for Hours — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 28 May 2020 Affected versions: Windows Server 2012 R2 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution — Primary Fix Solution — Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related […]

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FreeBSD 12 — postgresql92-client — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — postgresql92-client — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 28 May 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: PostgreSQL vulnerabilities Related CVEs: CVE-2016-5423 CVE-2016-5424 Upstream summary: The PostgreSQL project reports: Security Fixes nested CASE expressions + database and role names with embedded special characters CVE-2017-7484: selectivity estimators bypass […]

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Common Problems 112620

Windows Server 2019 Write Cache Policy Disabled Reducing Array Write Performance – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 28 May 2020 Affected versions: Windows Server 2019 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]

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