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How to Write Ansible Playbooks for Debian 10 Systems — step-by-step Debian 10 tutorial on Progressive Robot

How to Write Ansible Playbooks for Debian 10 Systems

Introduction This guide explains how to Write Ansible Playbooks for Debian 10 Systems on Debian 10 Buster. Debian Buster 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 10 install with the […]

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How to Install and Configure Rundeck on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Install and Configure Rundeck on Debian 10

Introduction This guide explains how to Install and Configure Rundeck on Debian 10 on Debian 10 Buster. Debian Buster 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 10 install with the […]

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How to Use Terraform to Provision Infrastructure on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Use Terraform to Provision Infrastructure on RHEL 8

With Terraform installed on RHEL 8, the next step is writing real-world HCL configurations that provision cloud infrastructure. HashiCorp Configuration Language 2 (HCL2) provides a clean, human-readable syntax for defining providers, resources, variables, and outputs that can be version-controlled alongside your application code. This tutorial walks through provisioning an AWS EC2 instance — covering input […]

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How to Install .NET Core 3.1 on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Install .NET Core 3.1 on Debian 10

Introduction This guide explains how to Install .NET Core 3.1 on Debian 10 on Debian 10 Buster. Debian Buster 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 10 install with the […]

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How to Configure tcpdump on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Configure tcpdump on IBM AIX 7.2

Introduction IBM AIX 7.2 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 7.2 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure tcpdump on ibm aix 7.2 on IBM AIX […]

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Common Problems 115107

Kdump Service Enabled but Crash Dumps Not Generated

🟡 Medium   ⏱ 5–30 min  Last verified: 26 April 2020 📖 ~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 Simultaneous Multithreading (SMT) on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Configure Simultaneous Multithreading (SMT) 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 simultaneous multithreading (smt) on ibm aix 7.1 on […]

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How to Set Up Port Knocking on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Set Up Port Knocking on Debian 10

Introduction Deploying set up port knocking on debian 10 on a Debian 10 Buster 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 Ensure Debian […]

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How to Use cron and at Scheduling on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Use cron and at Scheduling on IBM AIX 7.2

Introduction IBM AIX 7.2 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 7.2 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to use cron and at scheduling on ibm aix 7.2 […]

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Arch Linux — pam-krb5 — vulnerability — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — pam-krb5 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202004-5 Related CVEs: CVE-2020-10595 Upstream summary: Type: arbitrary code execution. Status: Fixed. Affected: 4.8-1. Fixed in: 4.9-1. Group: AVG-1119. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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