DNS

How to Install InfluxDB on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Install InfluxDB on CentOS Stream 9

Introduction How to Install InfluxDB on CentOS Stream 9 on CentOS Stream 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 reproducible […]

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How to Configure SSH Hardening on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure SSH Hardening on Debian 11

Introduction This guide explains how to Configure SSH Hardening on Debian 11 on Debian 11 Bullseye. Debian Bullseye 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 11 install with the standard […]

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How to Set Up Graylog on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Set Up Graylog on CentOS Stream 9

Introduction This tutorial demonstrates how to Set Up Graylog on CentOS Stream 9 on CentOS Stream 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 CentOS Stream 9 system with the default […]

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How to Install Harbor Container Registry on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Install Harbor Container Registry on Debian 11

Introduction Deploying install harbor container registry on debian 11 on a Debian 11 Bullseye 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 Set Up Nginx Load Balancing on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Set Up Nginx Load Balancing on CentOS Stream 9

Introduction This tutorial demonstrates how to Set Up Nginx Load Balancing on CentOS Stream 9 on CentOS Stream 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 CentOS Stream 9 system with […]

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How to Configure Woodpecker CI on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure Woodpecker CI on Debian 11

Introduction How to Configure Woodpecker CI on Debian 11 is a fundamental operation for any administrator maintaining a Debian 11 Bullseye server. Debian 11 Bullseye 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 11. This […]

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How to Configure Static IP on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure Static IP on Debian 11

Introduction Deploying configure static ip on debian 11 on a Debian 11 Bullseye 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 […]

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Common Problems 120623

Debian 11: UFW blocks required application ports

🟡 Medium   ⏱ 5–30 min  Last verified: 16 March 2022 Affected versions: Debian 11 📖 ~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 iptables Packet Filtering on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure iptables Packet Filtering on Debian 11

Introduction This guide explains how to Configure iptables Packet Filtering on Debian 11 on Debian 11 Bullseye. Debian Bullseye 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 11 install with the […]

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