Kernel Drivers

How to Set Up Windows Server Update Services (WSUS) on Windows Server 2022 — step-by-step Windows Server 2022 tutorial on Progressive Robot

How to Set Up Windows Server Update Services (WSUS) on Windows Server 2022

Introduction to Local User and Group Management Windows Server 2022 supports two distinct categories of accounts: local accounts, which are stored in the local Security Account Manager (SAM) database on the server itself, and domain accounts, which are managed through Active Directory. This article focuses entirely on local accounts — when to use them, how […]

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How to Configure PHP Session Handling on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Configure PHP Session Handling on Oracle Linux 9

Introduction Oracle Linux 9 ships with a stable, security-hardened base that makes deploying configure php session handling on oracle linux 9 both straightforward and auditable. This tutorial covers the complete procedure for how to Configure PHP Session Handling on Oracle Linux 9, including dnf module streams where applicable, systemd unit management, and the firewalld rules […]

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How to Configure Chrony as a Time Server on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Configure Chrony as a Time Server on RHEL 9

Accurate timekeeping is critical in enterprise Linux environments. Kerberos authentication, TLS certificate validation, log correlation, and distributed system coordination all depend on clocks being tightly synchronised across hosts. On RHEL 9, Chrony is the default NTP implementation, replacing the older ntpd daemon. This tutorial walks through configuring a dedicated Chrony NTP server on RHEL 9 […]

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Oracle Linux 8 — kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — kernel — vulnerability — patch and remediation guide (ELSA-2025-10669)

🟠 High   ⏱ 15–60 min  Last verified: 8 April 2023 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-10669 Related CVEs: CVE-2022-49111 CVE-2022-49136 CVE-2022-49846 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 124557

Oracle Linux 9 – Common Problem 010 – Diagnosis and Fix

🟡 Medium   ⏱ 5–30 min  Last verified: 6 April 2023 Affected versions: Oracle Linux 9 📖 ~3 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 115619

RHEL 7 multipath devices missing after reboot

🟠 High   ⏱ 5–30 min  Last verified: 6 April 2023 Affected versions: RHEL 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 & Hardening Related Errors & […]

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How to Configure Software RAID on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Configure Software RAID on Oracle Linux 9

Introduction Oracle Linux 9 ships with a stable, security-hardened base that makes deploying configure software raid on oracle linux 9 both straightforward and auditable. This tutorial covers the complete procedure for how to Configure Software RAID on Oracle Linux 9, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for […]

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Amazon Linux 2 — kernel-livepatch-5.10.144-127.601 — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — kernel-livepatch-5.10.144-127.601 — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2LIVEPATCH-2023-104 Related CVEs: CVE-2022-3524 CVE-2022-3594 CVE-2022-3621 CVE-2022-3623 CVE-2022-3649 Upstream summary: A vulnerability was found in Linux Kernel. It has been declared as problematic. Affected by this vulnerability is the function […]

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Common Problems 117568

Ubuntu 20.04 LTS – high CPU from kswapd0 due to memory pressure

🟠 High   ⏱ 5–30 min  Last verified: 4 April 2023 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 […]

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Amazon Linux 2 — kernel-livepatch-5.10.192-182.736 — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — kernel-livepatch-5.10.192-182.736 — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2LIVEPATCH-2023-160 Related CVEs: CVE-2023-45871 CVE-2023-5197 CVE-2023-4623 CVE-2023-4921 Upstream summary: An issue was discovered in drivers/net/ethernet/intel/igb/igb_main.c in the IGB driver in the Linux kernel before 6.5.3. A buffer size may not […]

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