Firewall

How to Set Up Jaeger Distributed Tracing on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Set Up Jaeger Distributed Tracing on Debian 12

Introduction Deploying set up jaeger distributed tracing 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 You […]

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Common Problems 114413

RHEL 9 firewalld blocks expected application traffic

🟡 Medium   ⏱ 5–30 min  Last verified: 20 June 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 Set Up SonarQube Code Analysis on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Set Up SonarQube Code Analysis on Debian 12

Introduction This guide explains how to Set Up SonarQube Code Analysis on Debian 12 on Debian 12 Bookworm. Debian Bookworm 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 12 install with […]

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Common Problems 121584

Debian 9 – UFW policy blocks package downloads and outbound HTTPS

🟡 Medium   ⏱ 5–30 min  Last verified: 19 June 2023 Affected versions: Debian 9 📖 ~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 Grafana Loki on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Configure Grafana Loki on Oracle Linux 9

Introduction Setting up configure grafana loki on oracle linux 9 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 Grafana Loki on Oracle Linux 9, with all the commands you need, the SELinux and firewalld considerations to keep in […]

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How to Set Up HAProxy Load Balancer on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Set Up HAProxy Load Balancer on Debian 12

Introduction How to Set Up HAProxy Load Balancer on Debian 12 is a fundamental operation for any administrator maintaining a Debian 12 Bookworm server. Debian 12 Bookworm 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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Common Problems 111717

Windows Server 2022 — DHCP failover communication interrupted between partners — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 19 June 2023 Affected versions: Windows Server 2022 📖 ~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 Enable SSL/TLS with Let's Encrypt on Apache2 on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Enable SSL/TLS with Let’s Encrypt on Apache2 on Debian 12

Introduction Debian 12 Bookworm is built around the ethos of stability and free software. Setting up enable ssl/tls with let’s encrypt on apache2 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 […]

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How to Configure IPv6 on Windows Server 2022 — step-by-step Windows Server 2022 tutorial on Progressive Robot

How to Configure IPv6 on Windows Server 2022

Introduction to IPv6 on Windows Server 2022 IPv6 is the successor to IPv4, designed to address the exhaustion of 32-bit address space by providing a 128-bit address space capable of supporting approximately 3.4 × 10³⁸ unique addresses. Windows Server 2022 ships with full IPv6 support enabled by default, and Microsoft has been clear that IPv6 […]

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How to Install Prometheus on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Install Prometheus on Debian 12

Introduction How to Install Prometheus on Debian 12 is a fundamental operation for any administrator maintaining a Debian 12 Bookworm server. Debian 12 Bookworm 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 12. This tutorial […]

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