Networking

How to Set Up Nagios on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up Nagios on Debian 9

Introduction This guide explains how to Set Up Nagios on Debian 9 on Debian 9 Stretch. Debian Stretch uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 9 install with the standard […]

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Common Problems 119136

Ubuntu 14.04 LTS – rsyslog causes excessive disk I/O and latency – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 31 October 2019 Affected versions: Ubuntu 14.04 LTS 📖 ~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 SCOM Monitoring for Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure SCOM Monitoring for Windows Server 2016

How to Set Up System Center Operations Manager (SCOM) on Windows Server 2016 System Center Operations Manager (SCOM) is Microsoft’s enterprise-grade monitoring platform that provides comprehensive health monitoring, alerting, and performance tracking for Windows Server 2016, Linux servers, network devices, and cloud workloads. SCOM uses Management Packs (MPs) to define what to monitor and how […]

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Common Problems 112952

Windows Server 2016 — PXE clients fail to obtain boot options from DHCP policy classes on Server 2019 — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 31 October 2019 Affected versions: Windows Server 2016 📖 ~2 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 Health Attestation Service on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Set Up Health Attestation Service on Windows Server 2019

Introduction to Health Attestation Service on Windows Server 2019 Windows Device Health Attestation (DHA) is a security feature that allows organizations to verify the boot-time integrity of Windows devices using measurements stored in the Trusted Platform Module (TPM). The Health Attestation Service on Windows Server 2019 is the on-premises server component that collects, validates, and […]

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How to Configure Hyper-V on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Configure Hyper-V on Windows Server 2019

How to Configure Hyper-V on Windows Server 2019 Hyper-V on Windows Server 2019 is Microsoft’s enterprise-grade hypervisor providing hardware virtualization for running multiple isolated virtual machines on a single physical host. Windows Server 2019 Datacenter edition includes unlimited virtual machine licenses for Windows Server guests, making it cost-effective for large-scale virtualization. Hyper-V supports features like […]

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How to Install Rancher on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install Rancher on Debian 9

Introduction Deploying install rancher on debian 9 on a Debian 9 Stretch 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 You will need a […]

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How to Configure Shared Ethernet Adapter on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Configure Shared Ethernet Adapter on IBM AIX 7.1

Introduction IBM AIX 7.1 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure shared ethernet adapter on ibm aix 7.1 on […]

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Common Problems 115412

Network service fails to start after reboot

🟡 Medium   ⏱ 5–30 min  Last verified: 29 October 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 & Cross-Refs References & Further […]

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How to Install Docker Engine on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Install Docker Engine on RHEL 8

Docker is not available in RHEL 8’s default AppStream repositories, so installing it requires adding the official Docker CE repository from Docker’s own package server. Unlike earlier RHEL versions, RHEL 8 ships with Podman as its native container runtime, but Docker CE remains a popular choice for teams migrating existing workflows. This tutorial walks through […]

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