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How to Back Up and Restore MySQL Databases with mysqldump on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Back Up and Restore MySQL Databases with mysqldump on RHEL 8

Regular database backups are one of the most important operational habits for any MySQL deployment, and RHEL 8 provides all the tools you need to implement a solid backup strategy. mysqldump produces portable SQL dumps that are easy to restore and inspect, while mysqlpump adds parallelism for faster exports on larger datasets. This tutorial covers […]

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How to Perform a System Security Audit with auditd on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Perform a System Security Audit with auditd on RHEL 7

How to Perform a System Security Audit with auditd on RHEL 7 Security auditing is a critical practice for any production RHEL 7 system, especially those subject to compliance frameworks such as PCI-DSS, HIPAA, or DISA STIG. The Linux Audit Framework, centered on the auditd daemon, provides kernel-level monitoring of system calls, file access, user […]

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How to Set Up Nginx with PHP-FPM on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up Nginx with PHP-FPM on Debian 9

Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up set up nginx with php-fpm on debian 9 on Stretch leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Stretch freeze. Follow each step carefully […]

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How to Configure Prometheus Node Exporter on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure Prometheus Node Exporter on RHEL 8

Prometheus Node Exporter is a lightweight agent that exposes dozens of hardware and operating-system metrics — CPU usage, memory pressure, disk I/O, network throughput, and more — via a plain HTTP endpoint that Prometheus can scrape. Installing it on every RHEL 8 host in your fleet gives you a uniform, low-overhead telemetry layer that feeds […]

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How to Set Up Zabbix Agent on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Set Up Zabbix Agent on Windows Server 2012 R2

How to Set Up Zabbix Agent on Windows Server 2012 R2 Zabbix is a mature, enterprise-grade open-source monitoring platform that provides agent-based and agentless monitoring with built-in alerting, trending, dashboards, and auto-discovery. The Zabbix Agent 2 provides active and passive check modes, native Windows performance counter collection, event log monitoring, process monitoring, and support for […]

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How to Configure Database Connection Pooling with PgBouncer on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure Database Connection Pooling with PgBouncer on RHEL 8

PgBouncer is a lightweight connection pooler for PostgreSQL that sits between your application and the database server, reusing a small pool of backend connections across many client requests. Without a connection pooler, PostgreSQL must fork a new backend process for every client connection, consuming memory and CPU as connection counts grow. On RHEL 8, PgBouncer […]

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Common Problems 117957

Ubuntu 18.04 SSH Login Fails with Public Key Authentication

🟡 Medium   ⏱ 5–30 min  Last verified: 19 August 2021 📖 ~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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How to Configure Advanced RAS Gateway Settings on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure Advanced RAS Gateway Settings on Windows Server 2016

How to Set Up Windows Server 2016 RAS Gateway Advanced The Remote Access Service (RAS) Gateway in Windows Server 2016 is a software-based, multitenant, Border Gateway Protocol (BGP)-capable router designed for cloud service providers (CSPs) and enterprises hosting multiple tenant virtual networks. The RAS Gateway advanced configuration allows you to go beyond basic VPN connectivity […]

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Common Problems 115110

Cockpit web console unreachable on RHEL 8

🟡 Medium   ⏱ 5–30 min  Last verified: 17 August 2021 📖 ~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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How to Configure Just Enough Administration (JEA) on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure Just Enough Administration (JEA) on Windows Server 2012 R2

How to Configure Just Enough Administration (JEA) on Windows Server 2012 R2 Just Enough Administration (JEA) is a PowerShell-based delegated administration framework that allows you to grant granular, role-based administrative access without giving users full Administrator privileges. With JEA, you can define exactly which PowerShell commands a user can run, what parameters they can pass, […]

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