March 2021 - Page 63 of 69

Common Problems 115896

APT Lock Contention During Package Operations

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 📖 ~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 & Cross-Refs References & Further […]

Read more
Common Problems 113976

RHEL 10 nftables and firewalld Direct Rules Conflict

🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: RHEL 10.0 RHEL 10.1 📖 ~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 […]

Read more
How to Configure Traefik Reverse Proxy on SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Configure Traefik Reverse Proxy on SLES 12

Introduction This tutorial covers How to Configure Traefik Reverse Proxy on SLES 12 on SLES 12. SLES 12 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 12 system is up to date: zypper […]

Read more
Oracle Linux 8 — virt:ol and virt-devel:ol — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — virt:ol and virt-devel:ol — vulnerability — patch and remediation guide (ELSA-2021-5238)

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-5238 Related CVEs: CVE-2021-20257 CVE-2021-3930 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

Read more
Common Problems 112968

Windows Server 2016 – Display miniport TDR resets freeze RDP sessions – Fix and Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Windows Server 2016 📖 ~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 […]

Read more
How to Configure Audit Subsystem on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Configure Audit Subsystem on IBM AIX 7.1

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 configure audit subsystem on ibm aix 7.1 on IBM […]

Read more
What is Python? — step-by-step Python tutorial on Progressive Robot

What is Python?

Python is a flexible programming language that prioritizes the clarity and readability of code. A good choice for many software development use cases, Python is often used for scripting, automation, data analysis, [machine…

Read more
jQuery parent() and children() tree traversal functions example — step-by-step DevOps tutorial on Progressive Robot

jQuery parent() and children() tree traversal functions example

URL: https://www.progressiverobot.com/jquery-parent-and-children-tree-traversal-functions-example/ — jQuery provides a lot of tree traversal functions that we can use to get the parent, child, siblings, previous and next elements. We will look into each of jQuery tree traversal methods one by one – today we will look into two of the jQuery traversal methods i.e parent() and children(). jQuery […]

Read more
Установка и настройка сервера OpenVPN в Ubuntu 20.04 — step-by-step Linux tutorial on Progressive Robot

Установка и настройка сервера OpenVPN в Ubuntu 20.04

Виртуальная частная сеть (VPN) позволит вам работать в незащищенных сетях, как если бы вы находились в частной сети. Она предоставляет возможность получить безопасный и защищенный доступ к сети Интернет со смартфона или…

Read more
How to Set Up MinIO Object Storage on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Set Up MinIO Object Storage on Oracle Linux 8

Introduction How to Set Up MinIO Object Storage on Oracle Linux 8 on Oracle Linux 8 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting […]

Read more
CHAT