Networking

How to Configure Audit Logging on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Configure Audit Logging on Oracle Linux 9

Introduction How to Configure Audit Logging on Oracle Linux 9 on Oracle Linux 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 […]

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Common Problems 118411

Ubuntu 16.04 Network Interface Missing After Kernel Upgrade

🟡 Medium   ⏱ 5–30 min  Last verified: 30 July 2023 📖 ~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 Multipath I/O on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Configure Multipath I/O on Debian 12

Introduction Deploying configure multipath i/o on debian 12 on a Debian 12 Bookworm machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites Before you begin, […]

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Common Problems 115553

RHEL 7 – SSH Login Blocked by firewalld Zone Assignment

🟡 Medium   ⏱ 5–30 min  Last verified: 30 July 2023 📖 ~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 Failover Clustering on Windows Server 2022 — step-by-step Windows Server 2022 tutorial on Progressive Robot

How to Configure Failover Clustering on Windows Server 2022

How to Configure Failover Clustering on Windows Server 2022 Windows Server Failover Clustering (WSFC) provides high availability for server roles and applications by grouping multiple servers (nodes) into a cluster. If one node fails, the cluster automatically moves the workload (a clustered role) to another healthy node — a process called failover. Windows Server 2022 […]

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How to Configure Oracle Linux 9 in Google Cloud — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Configure Oracle Linux 9 in Google Cloud

Introduction Setting up configure oracle linux 9 in google cloud on a Oracle Linux 9 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Configure Oracle Linux 9 in Google Cloud, with all the commands you need, the SELinux and firewalld considerations to keep in […]

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How to Install and Configure Julia on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Install and Configure Julia on Debian 12

Introduction Debian 12 Bookworm is built around the ethos of stability and free software. Setting up install and configure julia on debian 12 on Bookworm leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Bookworm freeze. Follow each step carefully and […]

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How to Configure Windows Server 2022 Software Load Balancer — step-by-step Windows Server 2022 tutorial on Progressive Robot

How to Configure Windows Server 2022 Software Load Balancer

Introduction to Monitoring Windows Server 2022 with Prometheus Prometheus is a pull-based metrics system that scrapes HTTP endpoints at configured intervals and stores time-series data for querying and alerting. The windows_exporter (formerly wmi_exporter) is the standard Prometheus exporter for Windows Server, exposing hundreds of metrics covering CPU, memory, disk, network, IIS, services, and more. This […]

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How to Set Up a Firewall with firewalld on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Set Up a Firewall with firewalld on Oracle Linux 9

Introduction This tutorial demonstrates how to Set Up a Firewall with firewalld on Oracle Linux 9 on Oracle Linux 9. 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 9 system […]

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Common Problems 120175

Debian 12 Firewall Rules Block Required Service Ports

🟠 High   ⏱ 5–30 min  Last verified: 28 July 2023 Affected versions: Debian 12 📖 ~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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