Networking

How to Set Up System Center Configuration Manager (SCCM) on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Set Up System Center Configuration Manager (SCCM) on Windows Server 2019

Introduction to SCCM on Windows Server 2019 System Center Configuration Manager, now rebranded as Microsoft Endpoint Configuration Manager (MECM) or simply Configuration Manager (ConfigMgr), is Microsoft’s enterprise-grade solution for managing large numbers of computers. It provides OS deployment, software distribution, patch management, inventory, compliance assessment, and remote control capabilities across thousands of machines. Setting up […]

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How to Set Up a DHCP Server with ISC DHCP on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Set Up a DHCP Server with ISC DHCP on RHEL 8

  • June 16, 2019
  • Linux
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A DHCP server automates IP address assignment across your network, eliminating manual configuration errors and centralizing address management. ISC DHCP (provided by the dhcp-server package on RHEL 8) is the most widely deployed open-source DHCP implementation and supports dynamic address pools, static reservations, vendor class options, and failover pairing. This tutorial walks through installing and […]

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How to Configure Resource Limits in Kubernetes on SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Configure Resource Limits in Kubernetes on SLES 12

Introduction This tutorial covers How to Configure Resource Limits in Kubernetes on SLES 12 on SLES 12. SLES 12 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Step 1 — Disable Swap swapoff -a sed -i ‘/ […]

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How to Install Scala and sbt on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install Scala and sbt on Debian 9

  • June 15, 2019
  • Linux
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Introduction How to Install Scala and sbt on Debian 9 is a fundamental operation for any administrator maintaining a Debian 9 Stretch server. Debian 9 Stretch ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 9. […]

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How to Manage Node.js Versions with nvm on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Manage Node.js Versions with nvm on Debian 9

  • June 15, 2019
  • Linux
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Introduction How to Manage Node.js Versions with nvm on Debian 9 is a fundamental operation for any administrator maintaining a Debian 9 Stretch server. Debian 9 Stretch ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian […]

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How to Scan for Vulnerabilities with OpenVAS on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Scan for Vulnerabilities with OpenVAS on FreeBSD 12

  • June 14, 2019
  • FreeBSD
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Introduction This guide explains how to Scan for Vulnerabilities with OpenVAS on FreeBSD 12 on FreeBSD 12. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for […]

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Common Problems 114959

RHEL 8 – firewalld Runtime Rules Lost After Reload

  • June 13, 2019
  • Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 13 June 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 Set Up Two-Factor Authentication on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Set Up Two-Factor Authentication on IBM AIX 7.1

  • June 13, 2019
  • IBM AIX
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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 set up two-factor authentication on ibm aix 7.1 on […]

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