March 2021 - Page 23 of 69

Oracle Linux 8 — redis:6 security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — redis:6 security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2022-7541)

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-7541 Related CVEs: CVE-2022-24736 CVE-2022-24735 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

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Common Problems 118526

Ubuntu 16.04 LTS – swap not enabled after reboot

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Ubuntu 16.04 LTS Ubuntu 16.04 Ubuntu 16.04.7 📖 ~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 […]

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Arch Linux — zint — vulnerability — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — zint — vulnerability — 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-202106-13 Related CVEs: CVE-2021-27799 Upstream summary: Type: arbitrary code execution. Status: Fixed. Affected: 2.9.1-1. Fixed in: 2.9.1-2. Group: AVG-1625. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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Common Problems 115086

RHEL 8 auditd Backlog Limit Reached Drops Security Events

🟡 Medium   ⏱ 5–30 min  Last verified: 20 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 […]

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Common Problems 113943

RHEL 10 – dnf cannot download metadata due to mirror TLS validation errors – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: RHEL 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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Spring Boot Actuator Endpoints — step-by-step DevOps tutorial on Progressive Robot

Spring Boot Actuator Endpoints

URL: https://www.progressiverobot.com/spring-boot-actuator-endpoints/ Spring Boot Actuator Endpoints lets us monitor and interact with our application. Spring Actuator is a [Spring Boot](/community/tutorials/spring-boot-tutorial) sub-module and provides built-in endpoints that we can enable and disable for our application. Spring Boot Actuator Endpoints Spring Boot Actuator Endpoints are exposed over [JMX](/community/tutorials/what-is-jmx-mbean-jconsole-tutorial) and HTTP, most of the times we use HTTP […]

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How to Set Up Suricata IDS/IPS on SLES 15 — step-by-step SUSE Linux Enterprise 15 tutorial on Progressive Robot

How to Set Up Suricata IDS/IPS on SLES 15

Introduction This tutorial covers How to Set Up Suricata IDS/IPS on SLES 15 on SLES 15. SLES 15 (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 15 system is up to date: zypper […]

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Convert time into hours minutes and seconds in Python — step-by-step Python tutorial on Progressive Robot

Convert time into hours minutes and seconds in Python

URL: https://www.progressiverobot.com/python-convert-time-hours-minutes-seconds/ In this tutorial, we will be talking about time. Don't worry, this isn't a boring history tutorial, rather we will be looking at different ways of converting time in seconds to time in hours, minutes, and seconds. Moving forwards we will be referring to time in hours, minutes and seconds as time in […]

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Outlier Analysis in R - Detect and Remove Outliers — step-by-step DevOps tutorial on Progressive Robot

Outlier Analysis in R – Detect and Remove Outliers

URL: https://www.progressiverobot.com/outlier-analysis-in-r/ Hello, readers! In this article, we will be focusing on Outlier Analysis in R programming, in detail. So, let us begin!! What are outliers in data? Before diving deep into the concept of outliers, let us focus on the pre-processing of data values. In the domain of data science and machine learning, pre-processing […]

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