Boot Startup

Oracle Linux 8 — grub2 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — grub2 — vulnerability — patch and remediation guide (ELSA-2025-3367)

🟠 High   ⏱ 15–60 min  Last verified: 12 July 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-3367 Related CVEs: CVE-2025-0624 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 115989

Ubuntu 26.04 LTS – initramfs build fails with missing storage modules

🟠 High   ⏱ 5–30 min  Last verified: 11 July 2026 Affected versions: Ubuntu 26.04 LTS Ubuntu 26.04 Ubuntu 26.04.1 📖 ~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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How to Set Up Software RAID with mdadm on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Set Up Software RAID with mdadm on RHEL 10

Introduction How to Set Up Software RAID with mdadm on RHEL 10 on RHEL 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 […]

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Debian 13 — coreboot — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — coreboot — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 11 July 2026 Affected versions: Debian 13 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2022-29264 Upstream summary: An issue was discovered in coreboot 4.13 through 4.16. On APs, arbitrary code execution in SMM may occur. Table of contents Symptom & Impact Environment & […]

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Common Problems 116035

Ubuntu 26.04 LTS – Swap re-enabled unexpectedly and breaks kubelet policy – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 11 July 2026 Affected versions: Ubuntu 26.04 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 116133

Unattended Upgrades Hold Back Kernel Updates on Ubuntu 26.04 LTS

🟡 Medium   ⏱ 5–30 min  Last verified: 10 July 2026 Affected versions: 26.04 📖 ~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 […]

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How to Set Up Consul Service Mesh on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Set Up Consul Service Mesh on FreeBSD 15

Introduction FreeBSD 15 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up set up consul service mesh on FreeBSD 15 follows the rc.conf/service(8) paradigm rather than systemd, which means enabling a service and configuring its startup options are done differently from any Linux distribution. This […]

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How to Install ArgoCD on RHEL 10 Kubernetes — step-by-step RHEL 10 tutorial on Progressive Robot

How to Install ArgoCD on RHEL 10 Kubernetes

Introduction Setting up install argocd on rhel 10 kubernetes on a RHEL 10 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Install ArgoCD on RHEL 10 Kubernetes, with all the commands you need, the SELinux and firewalld considerations to keep in mind, and how […]

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How to Install Portainer on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Install Portainer on FreeBSD 15

Introduction This guide explains how to Install Portainer on FreeBSD 15 on FreeBSD 15. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for fine-grained privilege separation. […]

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How to Install Nginx on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Install Nginx on FreeBSD 15

Introduction FreeBSD 15 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up install nginx on FreeBSD 15 follows the rc.conf/service(8) paradigm rather than systemd, which means enabling a service and configuring its startup options are done differently from any Linux distribution. This guide walks through […]

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