Kernel Drivers

How to Set Up a Windows Server Load Balancer with NLB on Windows Server 2025 — step-by-step Windows Server 2025 tutorial on Progressive Robot

How to Set Up a Windows Server Load Balancer with NLB on Windows Server 2025

How to Set Up a Windows Server Load Balancer with NLB on Windows Server 2025 Network Load Balancing (NLB) is a built-in Windows Server clustering technology that distributes incoming TCP/IP traffic across multiple servers, providing high availability and horizontal scalability without additional hardware. Unlike hardware load balancers, NLB operates at the network layer using a […]

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Common Problems 111224

Windows Server 2025 — SQL Server log backup chain broken after full backup to different location — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 25 February 2025 Affected versions: Windows Server 2025 📖 ~2 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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NetBSD 10.0 — xenkernel48 — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 10.0

NetBSD 10.0 — xenkernel48 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 10.0 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Upstream summary: pkgsrc audit-packages flagged xenkernel48<4.8.0nb1 for vulnerability class 'privilege-elevation'. Reference: https://xenbits.xen.org/xsa/advisory-212.html Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary […]

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How to Set Up Checkmk on CentOS Stream 10 — step-by-step CentOS Stream 10 tutorial on Progressive Robot

How to Set Up Checkmk on CentOS Stream 10

Introduction CentOS Stream 10 ships with a stable, security-hardened base that makes deploying set up checkmk on centos stream 10 both straightforward and auditable. This tutorial covers the complete procedure for how to Set Up Checkmk on CentOS Stream 10, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for […]

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How to Configure Resource Limits in Kubernetes on CentOS Stream 10 — step-by-step CentOS Stream 10 tutorial on Progressive Robot

How to Configure Resource Limits in Kubernetes on CentOS Stream 10

Introduction How to Configure Resource Limits in Kubernetes on CentOS Stream 10 on CentOS Stream 10 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 […]

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Common Problems 114575

RHEL 9: mdadm RAID Array Degraded

🟡 Medium   ⏱ 5–30 min  Last verified: 22 February 2025 📖 ~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 3.19 — xen — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux 3.19

Alpine Linux 3.19 — xen — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.19 / fixed in 4.9.1-r1 📖 ~4 min read  •  Source: Alpine secdb entry — xen 4.9.1-r1 Related CVEs: XSA-246 XSA-247 CVE-2017-15597 CVE-2017-15590 XSA-238 CVE-2017-15589 CVE-2017-15595 CVE-2017-15588  +12 more Upstream summary: Alpine main repository for vv3.19 ships xen 4.9.1-r1 which […]

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NetBSD 10.0 — qemu — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 10.0

NetBSD 10.0 — qemu — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: NetBSD 10.0 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2011-1751 CVE-2011-2212 CVE-2011-2527 CVE-2012-0029 CVE-2012-6075 CVE-2013-4377 CVE-2014-5263 CVE-2014-3689  +12 more Upstream summary: pkgsrc audit-packages flagged qemu<0.15.0 for vulnerability class 'privilege-escalation'. Reference: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-1751 Table of contents Symptom & Impact Environment […]

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How to Install Netdata on CentOS Stream 10 — step-by-step CentOS Stream 10 tutorial on Progressive Robot

How to Install Netdata on CentOS Stream 10

Introduction How to Install Netdata on CentOS Stream 10 on CentOS Stream 10 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 reproducible […]

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How to Add DNF Modules on CentOS Stream 10 — step-by-step CentOS Stream 10 tutorial on Progressive Robot

How to Add DNF Modules on CentOS Stream 10

Introduction CentOS Stream 10 ships with a stable, security-hardened base that makes deploying add dnf modules on centos stream 10 both straightforward and auditable. This tutorial covers the complete procedure for how to Add DNF Modules on CentOS Stream 10, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for […]

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