DNS

How to Set Up LDAP with OpenLDAP on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Set Up LDAP with OpenLDAP on RHEL 9

OpenLDAP is the most widely deployed open-source LDAP directory server and is commonly used for centralised identity management across Linux systems. On RHEL 9, OpenLDAP server packages are available directly from the base repositories, providing a standards-compliant LDAPv3 directory that integrates with SSSD for system authentication. This tutorial covers installing OpenLDAP, configuring the directory database, […]

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How to Restore PostgreSQL Databases on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Restore PostgreSQL Databases on RHEL 10

Introduction Setting up restore postgresql databases on a RHEL 10 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Restore PostgreSQL Databases on RHEL 10, with all the commands you need, the SELinux and firewalld considerations to keep in mind, and how to validate the […]

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How to Install Terraform on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Install Terraform on RHEL 10

Introduction This tutorial demonstrates how to Install Terraform on RHEL 10 on RHEL 10. 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 RHEL 10 system with the default AppStream repositories enabled. Prerequisites […]

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How to Install Python 3.13 on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Install Python 3.13 on RHEL 10

Introduction This tutorial demonstrates how to Install Python 3.13 on RHEL 10 on RHEL 10. 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 RHEL 10 system with the default AppStream repositories enabled. […]

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Common Problems 113903

RHEL 10 – systemd service stuck in activating state after boot – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 4 April 2026 Affected versions: RHEL 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 Install Jenkins on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Install Jenkins on RHEL 10

Introduction This tutorial demonstrates how to Install Jenkins on RHEL 10 on RHEL 10. 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 RHEL 10 system with the default AppStream repositories enabled. Prerequisites […]

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Common Problems 121973

Service Fails to Start Due to rc.conf Typo

🟡 Medium   ⏱ 5–30 min  Last verified: 3 April 2026 Affected versions: FreeBSD 15 📖 ~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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FreeBSD 15 — bind96-base — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 15

FreeBSD 15 — bind96-base — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 3 April 2026 Affected versions: FreeBSD 15 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: bind — denial of service vulnerability Related CVEs: CVE-2012-5166 CVE-2013-3919 CVE-2014-0591 CVE-2014-8500 CVE-2014-8680 Upstream summary: ISC reports: We have today posted updated versions of 9.9.6 and 9.10.1 to address a […]

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Debian 12 — aardvark-dns — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — aardvark-dns — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 3 April 2026 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2026-35406 Upstream summary: Aardvark-dns is an authoritative dns server for A/AAAA container records. From 1.16.0 to 1.17.0, a truncated TCP DNS query followed by a connection reset causes […]

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How to Monitor systemd Services with Prometheus on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Monitor systemd Services with Prometheus on RHEL 10

Introduction Setting up monitor systemd services with prometheus on a RHEL 10 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Monitor systemd Services with Prometheus on RHEL 10, with all the commands you need, the SELinux and firewalld considerations to keep in mind, and […]

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