Capacity Planning

How to Configure DHCP Failover on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure DHCP Failover on Windows Server 2016

How to Configure High Availability for DHCP with DHCP Failover on Windows Server 2016 DHCP (Dynamic Host Configuration Protocol) is a critical network service — when it fails, new devices cannot obtain IP addresses and existing leases eventually expire, causing network outages. Windows Server 2016 includes DHCP Failover, a feature that allows two DHCP servers […]

Read more
Common Problems 115086

RHEL 8 auditd Backlog Limit Reached Drops Security Events

🟡 Medium   ⏱ 5–30 min  Last verified: 21 March 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 […]

Read more
How to Set Up Zabbix on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Set Up Zabbix on Oracle Linux 8

Introduction Setting up set up zabbix on oracle linux 8 on a Oracle Linux 8 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Set Up Zabbix on Oracle Linux 8, with all the commands you need, the SELinux and firewalld considerations to keep in […]

Read more
Common Problems 117603

Apache Cannot Allocate Shared Memory

🟠 High   ⏱ 5–30 min  Last verified: 18 March 2021 Affected versions: 20.04 📖 ~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 […]

Read more
How to Configure pgBouncer on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Configure pgBouncer on Oracle Linux 8

Introduction How to Configure pgBouncer on Oracle Linux 8 on Oracle Linux 8 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 […]

Read more
How to Configure firewalld Zones on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Configure firewalld Zones on Oracle Linux 8

Introduction Oracle Linux 8 ships with a stable, security-hardened base that makes deploying configure firewalld zones on oracle linux 8 both straightforward and auditable. This tutorial covers the complete procedure for how to Configure firewalld Zones on Oracle Linux 8, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for […]

Read more
How to Configure Network QoS with tc on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure Network QoS with tc on RHEL 8

Quality of Service (QoS) with the Linux traffic control subsystem (tc) gives you precise control over bandwidth allocation, latency, and scheduling for network interfaces on RHEL 8. Using the Hierarchical Token Bucket (HTB) queuing discipline you can guarantee minimum bandwidth to critical services, cap bandwidth for bulk transfers, and prioritize interactive traffic over background workloads. […]

Read more
How to Configure Nginx Rate Limiting on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Configure Nginx Rate Limiting on Oracle Linux 8

Introduction This tutorial demonstrates how to Configure Nginx Rate Limiting on Oracle Linux 8 on Oracle Linux 8. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered Oracle Linux 8 system with the […]

Read more
How to Configure Storage Reports with FSRM on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Configure Storage Reports with FSRM on Windows Server 2019

Introduction to Storage Reports with FSRM on Windows Server 2019 File Server Resource Manager (FSRM) Storage Reports provide detailed analytical reports about storage usage on Windows Server 2019 file servers. These reports help administrators understand how storage is being consumed, identify large or unnecessarily duplicated files, find files that have not been accessed recently, report […]

Read more
How to Set Up Windows Event Forwarding (WEF) on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Set Up Windows Event Forwarding (WEF) on Windows Server 2012 R2

How to Set Up Windows Event Forwarding (WEF) on Windows Server 2012 R2 Windows Event Forwarding (WEF) is a native Windows mechanism that allows you to centralize security events from dozens or hundreds of servers onto a dedicated collector server—without deploying an agent or purchasing additional software. WEF uses the WS-Management protocol (the same protocol […]

Read more
CHAT