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How to Use Prometheus Blackbox Exporter for Endpoint Monitoring on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Use Prometheus Blackbox Exporter for Endpoint Monitoring on RHEL 9

The Prometheus Blackbox Exporter allows you to probe external endpoints over HTTP, HTTPS, TCP, and ICMP and expose the results as Prometheus metrics. Unlike Node Exporter, which reports what is happening inside a host, the Blackbox Exporter reports whether a service is reachable from the outside — making it ideal for end-to-end availability checks. This […]

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Common Problems 115582

Severe swap thrashing and poor performance

🟡 Medium   ⏱ 5–30 min  Last verified: 10 November 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 & Cross-Refs References & Further […]

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Common Problems 115057

OpenSSL Handshake Fails Due to Legacy TLS Version

🟡 Medium   ⏱ 5–30 min  Last verified: 10 November 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 & Cross-Refs References & Further […]

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How to Configure Shared Ethernet Adapter on IBM AIX 7.3 — step-by-step IBM AIX 7.3 tutorial on Progressive Robot

How to Configure Shared Ethernet Adapter on IBM AIX 7.3

Introduction IBM AIX 7.3 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 7.3 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure shared ethernet adapter on IBM AIX 7.3 with […]

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Common Problems 112895

Windows Server 2016 – UAC prompts blocking automation and scheduled tasks – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 10 November 2022 Affected versions: Windows Server 2016 📖 ~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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Common Problems 111842

Windows Server 2022 — Group Policy Preferences fail to apply drive mappings — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 10 November 2022 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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Debian 11 — thefuck — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — thefuck — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 10 November 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-34363 Upstream summary: The thefuck (aka The Fuck) package before 3.31 for Python allows Path Traversal that leads to arbitrary file deletion via the "undo archive operation" feature. […]

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Настройка ключей SSH в CentOS 8 — step-by-step Linux tutorial on Progressive Robot

Настройка ключей SSH в CentOS 8

SSH или защищенная оболочка — это шифрованный протокол, используемый для администрирования и связи с серверами. При работе с сервером CentOS вы с большой вероятностью проведете больше всего времени в сеансах терминала с подключением к серверу через SSH. В этом обучающем…

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Debian 11 — libosinfo — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libosinfo — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 10 November 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-13313 Upstream summary: libosinfo 1.5.0 allows local users to discover credentials by listing a process, because credentials are passed to osinfo-install-script via the command line. Table of contents […]

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