December 2020 - Page 58 of 69

Oracle Linux 8 — flatpak-builder — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — flatpak-builder — security and stability fixes — required update (ELSA-2022-7458)

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-7458 Related CVEs: CVE-2022-21682 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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Common Problems 118128

Ubuntu 18.04 LTS Cron Jobs Stop Running Due to PAM or Permission Changes

🟡 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: 18.04 LTS 📖 ~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 117406

Ubuntu 20.04 LTS – unattended-upgrades causes sustained CPU usage – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Ubuntu 20.04 LTS 📖 ~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 114457

RHEL 9 Time Drift Due To chronyd Not Syncing

🟡 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 […]

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Common Problems 114443

RHEL 9 SSH access fails after hardening changes

🟡 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 […]

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Alpine Linux edge — libmaxminddb — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — libmaxminddb — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 1.4.3-r0 📖 ~4 min read  •  Source: Alpine secdb entry — libmaxminddb 1.4.3-r0 Related CVEs: CVE-2020-28241 Upstream summary: Alpine main repository for vedge ships libmaxminddb 1.4.3-r0 which addresses CVE-2020-28241. Table of contents Symptom & Impact Environment […]

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How to Configure PostgreSQL High Availability with Patroni on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Configure PostgreSQL High Availability with Patroni on Oracle Linux 8

Introduction This tutorial demonstrates how to Configure PostgreSQL High Availability with Patroni on Oracle Linux 8 on Oracle Linux 8. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered Oracle Linux 8 system […]

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How To Use The Apollo Client GraphQL with Angular 4+ — step-by-step Javascript tutorial on Progressive Robot

How To Use The Apollo Client GraphQL with Angular 4+

Apollo Client is the flexible, community-driven GraphQL client for Angular, JavaScript, and native platforms. It is designed from the ground up to make it easy to build UI components that fetch data with GraphQL. This article is a quick summary about how to use Apollo client GraphQL with your Angular 4+. Therefore you need to know about GraphQl and Angular 4+ before you read the following post.

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