Firewall

How to Install ArgoCD GitOps Tool on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Install ArgoCD GitOps Tool on Debian 10

Introduction Debian 10 Buster is built around the ethos of stability and free software. Setting up install argocd gitops tool on debian 10 on Buster leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Buster freeze. Follow each step carefully and […]

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Common Problems 117420

Ubuntu 20.04 LTS UFW Rules Not Persisting as Expected

🟡 Medium   ⏱ 5–30 min  Last verified: 5 May 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 PostgreSQL Remote Access on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Configure PostgreSQL Remote Access on Debian 10

Introduction This guide explains how to Configure PostgreSQL Remote Access 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 Monitor Windows Server 2016 with SolarWinds — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Monitor Windows Server 2016 with SolarWinds

How to Set Up SolarWinds Monitoring Agent on Windows Server 2016 SolarWinds offers a suite of monitoring products, and its agent-based monitoring approach is central to platforms such as SolarWinds Server and Application Monitor (SAM) and the N-able N-central and N-sight Remote Monitoring and Management products. Installing the SolarWinds agent on a Windows Server 2016 […]

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How to Monitor Nginx Logs with GoAccess on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Monitor Nginx Logs with GoAccess on FreeBSD 12

Introduction How to Monitor Nginx Logs with GoAccess on FreeBSD 12 is a core administration task for any FreeBSD 12 server operator. FreeBSD 12 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for […]

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How to Configure IPv6 on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Configure IPv6 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 ipv6 on ibm aix 7.2 on IBM AIX […]

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How to Monitor MySQL with Prometheus mysqld_exporter on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Monitor MySQL with Prometheus mysqld_exporter on RHEL 7

How to Monitor MySQL with Prometheus mysqld_exporter on RHEL 7 Prometheus is an open-source monitoring system that scrapes metrics from instrumented targets at regular intervals and stores them in a time-series database. For MySQL monitoring, the official mysqld_exporter binary exposes hundreds of MySQL performance schema metrics, InnoDB statistics, replication lag, and query throughput in the […]

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Common Problems 121694

Debian 9 – Fail2ban blocks internal monitoring and trusted hosts

🟡 Medium   ⏱ 5–30 min  Last verified: 3 May 2020 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 Set Up HTTPS Redirect in Apache2 on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Set Up HTTPS Redirect in Apache2 on Debian 10

Introduction Debian 10 Buster is built around the ethos of stability and free software. Setting up set up https redirect in apache2 on debian 10 on Buster leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Buster freeze. Follow each step […]

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Common Problems 115001

RHEL 8 sshd Resetting Connections Under High Burst Logins

🟡 Medium   ⏱ 5–30 min  Last verified: 2 May 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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