Introduction How to Set Up Fluentd 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 is […]
How to Configure PowerShell Remoting on Windows Server 2012 R2 PowerShell Remoting is one of the most powerful features available to systems administrators managing Windows Server 2012 R2 environments. It allows you to run PowerShell commands and scripts on remote computers as if you were sitting at the console, enabling centralized management of dozens or […]
How to Configure Database Connection Pooling with PgBouncer on RHEL 7 Every PostgreSQL client connection spawns a backend process on the server, consuming approximately 5–10 MB of RAM for its working memory and adding overhead to the process scheduler. Applications that open hundreds of short-lived connections — such as PHP scripts, Node.js workers, or microservices […]
How to Set Up System Center Configuration Manager Client on Windows Server 2012 R2 System Center Configuration Manager (SCCM, now Microsoft Endpoint Configuration Manager) is Microsoft’s enterprise solution for operating system deployment, software distribution, patch management, hardware and software inventory, and compliance management. The Configuration Manager client installed on each managed Windows Server 2012 R2 […]
How to Configure Hyper-V Virtual Machine Settings on Windows Server 2012 R2 Hyper-V in Windows Server 2012 R2 provides a robust hypervisor platform capable of running dozens of virtual machines on a single physical host. Understanding how to configure virtual machine settings correctly — from CPU allocation to memory management, network adapters, and storage controllers […]
🟡 Medium ⏱ 5–30 min Last verified: 18 November 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 […]
How to Back Up PostgreSQL with pg_dump and pg_basebackup on RHEL 7 A reliable backup strategy is one of the most critical operational requirements for any PostgreSQL deployment. On RHEL 7, PostgreSQL provides several complementary backup tools suited to different recovery scenarios: pg_dump for logical, per-database backups that can be restored selectively; pg_dumpall for capturing […]
🟡 Medium ⏱ 5–30 min Last verified: 8 November 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 […]
OpenVAS (Open Vulnerability Assessment System), now distributed as Greenbone Community Edition, is a powerful open-source vulnerability scanner that identifies known CVEs, misconfigurations, and weak credentials across your network. Running it as a containerized stack on RHEL 8 keeps the scanner isolated and easy to update without conflicting with system packages. This tutorial covers deploying Greenbone […]
How to Build PowerShell Script Modules on Windows Server 2012 R2 PowerShell script modules are the standard packaging mechanism for distributing reusable functions, workflows, and cmdlets within an organization. A script module is simply a .psm1 file — a PowerShell script that defines functions and controls which of them are exported for use by consumers […]
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