Operations

How to Use rsync for Efficient File Synchronisation on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Use rsync for Efficient File Synchronisation on RHEL 8

When you need to copy large directory trees, synchronise remote backups, or mirror content between servers, rsync is the tool of choice on Red Hat Enterprise Linux 8. Unlike a plain cp or scp, rsync transmits only the differences between source and destination, making subsequent runs dramatically faster. Its rich option set covers everything from […]

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Oracle Linux 9 — Kernel Issues — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — Kernel Issues (9-KERNEL-ISSUES)

🟠 High   ⏱ 5–30 min  Last verified: 6 March 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: Oracle Bug OLRNT-ol9-issues-kernel 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 […]

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Windows Server 2022 — KB5031989 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2022

Windows Server 2022 — KB5031989 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Windows Server 2022 📖 ~4 min read  •  Source: Microsoft KB5031989 • MSRC update-guide entry Related CVEs: CVE-2023-36560 CVE-2023-36049 Affected components: Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2022, 23H2 Edition (Server Core installation) Table of contents Symptom & Impact […]

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How to Set Up Consul on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Set Up Consul on Oracle Linux 9

Introduction How to Set Up Consul on Oracle Linux 9 on Oracle Linux 9 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 configuration is […]

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Debian 11 — node-sqlite3 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — node-sqlite3 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 6 March 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2022-21227 CVE-2022-43441 Upstream summary: The package sqlite3 before 5.0.3 are vulnerable to Denial of Service (DoS) which will invoke the toString function of the passed parameter. If passed […]

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AlmaLinux 8 — rust — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — rust — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2023:4635 Related CVEs: CVE-2023-38497 CVE-2022-21658 CVE-2021-42574 Upstream summary: Rust Toolset provides the Rust programming language compiler rustc, the cargo build tool and dependency manager, and required libraries. Security Fix(es): * rust-cargo: cargo […]

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Common Problems 111800

Windows Server 2022 — Hybrid Azure AD join fails with 0x80004005 error — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 6 March 2023 Affected versions: Windows Server 2022 📖 ~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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Debian 11 — kate — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — kate — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 6 March 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2022-23853 Upstream summary: The LSP (Language Server Protocol) plugin in KDE Kate before 21.12.2 and KTextEditor before 5.91.0 tries to execute the associated LSP server binary when opening […]

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Ubuntu 20.04 — monit — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — monit — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 6 March 2023 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6571-1 Related CVEs: CVE-2022-26563 Upstream summary: Youssef Rebahi-Gilbert discovered that Monit did not properly process credentials for disabled accounts. An attacker could possibly use this issue to login to the […]

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Alpine Linux edge — gst-plugins-ugly — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — gst-plugins-ugly — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 1.22.5-r0 📖 ~4 min read  •  Source: Alpine secdb entry — gst-plugins-ugly 1.22.5-r0 Related CVEs: CVE-2023-38104 CVE-2023-38103 CVE-2017-5846 CVE-2017-5847 Upstream summary: Alpine community repository for vedge ships gst-plugins-ugly 1.22.5-r0 which addresses CVE-2023-38104. Table of contents Symptom […]

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