DNS

How to Install Elasticsearch 8 on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Install Elasticsearch 8 on RHEL 9

Elasticsearch is a distributed, RESTful search and analytics engine built on Apache Lucene. It stores data as JSON documents in indices and provides near-real-time full-text search, log aggregation, metrics analysis, and complex aggregation queries through a simple HTTP/JSON API. Elasticsearch is the core component of the Elastic Stack (ELK Stack) — Elasticsearch stores and searches […]

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Oracle Linux 9 — bind and bind-dyndb-ldap — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — bind and bind-dyndb-ldap — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 14 March 2025 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2024-5231 Related CVEs: CVE-2024-4076 CVE-2024-1737 CVE-2024-1975 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification […]

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AlmaLinux 8 — unbound — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — unbound — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2025:11884 Related CVEs: CVE-2025-5994 CVE-2024-1488 CVE-2024-8508 CVE-2023-50387 CVE-2023-50868 CVE-2022-3204 CVE-2022-30698 CVE-2022-30699 Upstream summary: The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver. Security Fix(es): * unbound: Unbound Cache […]

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Alpine Linux 3.18 — unbound — multiple vulnerabilities (12 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux 3.18

Alpine Linux 3.18 — unbound — multiple vulnerabilities (12 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.18 / fixed in 1.9.5-r0 📖 ~4 min read  •  Source: Alpine secdb entry — unbound 1.9.5-r0 Related CVEs: CVE-2019-18934 CVE-2019-16866 CVE-2024-8508 CVE-2024-33655 CVE-2024-1931 CVE-2023-50387 CVE-2023-50868 CVE-2022-3204  +4 more Upstream summary: Alpine main repository for vv3.18 ships unbound 1.9.5-r0 which […]

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Common Problems 114631

curl And dnf Fail TLS Validation Due To Missing CA Trust

🟡 Medium   ⏱ 5–30 min  Last verified: 11 March 2025 📖 ~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 127138

CentOS Stream 10 – Common Problem 168 – Diagnosis and Fix

🟠 High   ⏱ 5–30 min  Last verified: 11 March 2025 Affected versions: CentOS Stream 10 📖 ~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 Jaeger Distributed Tracing on CentOS Stream 10 — step-by-step CentOS Stream 10 tutorial on Progressive Robot

How to Configure Jaeger Distributed Tracing on CentOS Stream 10

Introduction Setting up configure jaeger distributed tracing on centos stream 10 on a CentOS Stream 10 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Configure Jaeger Distributed Tracing on CentOS Stream 10, with all the commands you need, the SELinux and firewalld considerations to […]

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Common Problems 111615

Windows Server 2025 AD Replication RPC Unavailable Errors — Fix & Prevention

🔴 Critical   ⏱ 5–30 min  Last verified: 11 March 2025 Affected versions: Windows Server 2025 📖 ~2 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 Windows Server for SAML/SSO Integration on Windows Server 2025 — step-by-step Windows Server 2025 tutorial on Progressive Robot

How to Configure Windows Server for SAML/SSO Integration on Windows Server 2025

How to Configure Windows Server for SAML/SSO Integration on Windows Server 2025 Security Assertion Markup Language (SAML) 2.0 is the foundation of federated single sign-on (SSO) for thousands of enterprise web applications — from Salesforce and ServiceNow to AWS and GitHub Enterprise. Active Directory Federation Services (AD FS), bundled with Windows Server, transforms your on-premises […]

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Common Problems 111214

Windows Server 2025 — IIS SSL handshake failing due to deprecated TLS 1.0/1.1 cipher removal — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 11 March 2025 Affected versions: Windows Server 2025 📖 ~2 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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