🔴 Critical ⏱ 5–30 min Last verified: 29 August 2020 Affected versions: 14.04 14.04.5 📖 ~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 & […]
🟡 Medium ⏱ 5–30 min Last verified: 29 August 2020 Affected versions: Ubuntu 20.04 LTS Ubuntu 20.04 Ubuntu 20.04.6 📖 ~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 […]
Introduction How to Set Up Docker Swarm Cluster on Debian 10 is a fundamental operation for any administrator maintaining a Debian 10 Buster server. Debian 10 Buster ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian […]
🟠 High ⏱ 5–30 min Last verified: 29 August 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 […]
Introduction IBM AIX 7.1 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to use filemon for i/o monitoring on ibm aix 7.1 […]
URL: https://www.progressiverobot.com/spring-restcontroller/ Spring RestController annotation is a convenience annotation that is itself annotated with [@Controller](/community/tutorials/spring-controller-spring-mvc-controller) and @ResponseBody. This annotation is applied to a class to mark it as a request handler. Spring RestController annotation is used to create RESTful web services using Spring MVC. Spring RestController takes care of mapping request data to the defined […]
![Pacman -Syu Kernel Update [SOLVED]: How to Ignore Arch Kernel Upgrades — step-by-step DevOps tutorial on Progressive Robot](https://www.progressiverobot.com/wp-content/uploads/2026/05/pacman-syu-kernel-update-solved-how-to-ignore-arch-kernel-upgrades-91353-featured.png "Pacman -Syu Kernel Update [SOLVED]: How to Ignore Arch Kernel Upgrades 7")
This tutorial provides a solution caused by the kernel management on the cloud provider. Because the cloud provider kernels come from the hypervisor, at a certain time, updating Arch Linux caused some of the modules to be lost. This tutorial explains how to prevent pacman from update the kernel when upgrading.
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 1.0.49-r1 📖 ~4 min read • Source: Alpine secdb entry — pure-ftpd 1.0.49-r1 Related CVEs: CVE-2020-9274 CVE-2020-9365 Upstream summary: Alpine community repository for vedge ships pure-ftpd 1.0.49-r1 which addresses CVE-2020-9274. Table of contents Symptom & Impact […]
URL: https://www.progressiverobot.com/install-openstack-ubuntu-devstack/ Openstack is a free and opensource IaaS cloud platform that handles cloud compute, storage and network resources. It comes with an intuitive dashboard that enables systems administrators to provide and monitor these resources. You can seamlessly install OpenStack locally on your Ubuntu 18.04 instance for learning and testing purposes using Devstack. Devstack is […]
Web forms are a common element of website design, ranging in complexity from a search form field to complex data filtering. Knowing how to use CSS to style and work with these elements helps provide better solutions to improve your user’s experience. This tutorial covers the creation and styling of a web form that requests various data from the user. The form will use text fields, radio buttons, checkboxes, drop-down selections, a text area, and a submit and reset button.
