Storage Disk

How to Back Up and Restore MySQL Databases with mysqldump on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Back Up and Restore MySQL Databases with mysqldump on RHEL 7

How to Back Up and Restore MySQL Databases with mysqldump on RHEL 7 Regular database backups are the single most important operational task for any MySQL administrator. mysqldump is the built-in logical backup utility that ships with every MySQL and MariaDB installation — it produces plain-text SQL files that can be compressed, transferred off-site, and […]

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Common Problems 120565

Debian 11 Filesystem Remounted Read-Only After Error

🟠 High   ⏱ 5–30 min  Last verified: 21 April 2022 Affected versions: Debian 11 📖 ~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 Set Up Puppet Agent on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Set Up Puppet Agent on CentOS Stream 9

Introduction How to Set Up Puppet Agent on CentOS Stream 9 on CentOS Stream 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 […]

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Common Problems 120638

Debian 11 – ext4 filesystem remounts read-only after I/O errors

🔴 Critical   ⏱ 5–30 min  Last verified: 18 April 2022 Affected versions: Debian 11 📖 ~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 Smart Card Authentication on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure Smart Card Authentication on Windows Server 2012 R2

How to Configure Smart Card Authentication on Windows Server 2012 R2 Smart card authentication implements true two-factor authentication (2FA) by requiring something the user has (the physical smart card) and something the user knows (the PIN). On Windows Server 2012 R2, smart card logon uses certificate-based Kerberos authentication, eliminating reliance on passwords for privileged access […]

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How to Configure MySQL InnoDB Tuning on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure MySQL InnoDB Tuning on Debian 11

Introduction How to Configure MySQL InnoDB Tuning on Debian 11 is a fundamental operation for any administrator maintaining a Debian 11 Bullseye server. Debian 11 Bullseye ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 11. […]

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How to Set Up a Complete DevSecOps Pipeline on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Set Up a Complete DevSecOps Pipeline on RHEL 7

How to Set Up a Complete DevSecOps Pipeline on RHEL 7 DevSecOps integrates security testing directly into every phase of the software delivery lifecycle rather than treating it as a final gate before production. The goal is to detect vulnerabilities, exposed secrets, and misconfigurations early — when they are cheap to fix — and to […]

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Common Problems 112448

Windows Server 2019 — WinSxS Growth Exhausts C: and Breaks Patch Installation — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 16 April 2022 Affected versions: Windows Server 2019 📖 ~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 Nginx as a Reverse Proxy on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Configure Nginx as a Reverse Proxy on CentOS Stream 9

Introduction CentOS Stream 9 ships with a stable, security-hardened base that makes deploying configure nginx as a reverse proxy on centos stream 9 both straightforward and auditable. This tutorial covers the complete procedure for how to Configure Nginx as a Reverse Proxy on CentOS Stream 9, including dnf module streams where applicable, systemd unit management, […]

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How to Configure Hyper-V Resource Metering on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure Hyper-V Resource Metering on Windows Server 2016

How to Configure Windows Server 2016 Hyper-V Resource Metering Hyper-V Resource Metering in Windows Server 2016 provides a built-in mechanism for tracking the resource consumption of virtual machines. It allows administrators and service providers to measure CPU utilisation, memory usage, network traffic, and disk I/O on a per-VM basis. The collected data can be used […]

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