Backup Recovery

Common Problems 115402

yum blocked by rpmdb lock or corruption

🟡 Medium   ⏱ 5–30 min  Last verified: 20 April 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 Pyenv for Multiple Python Versions on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure Pyenv for Multiple Python Versions on Debian 9

Introduction This guide explains how to Configure Pyenv for Multiple Python Versions on Debian 9 on Debian 9 Stretch. Debian Stretch 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 9 install […]

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

How to Configure Amanda Backup 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 amanda backup on ibm aix 7.2 on IBM […]

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How to Install Redis on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Install Redis on Debian 10

Introduction Debian 10 Buster is built around the ethos of stability and free software. Setting up install redis 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 the resulting […]

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Common Problems 121165

Debian 10 Locale Misconfiguration Causes Perl Warning

🟢 Low   ⏱ 5–30 min  Last verified: 19 April 2020 Affected versions: Debian 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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Common Problems 115125

RHEL 8 DNS Settings Overwritten by DHCP and Break Internal Name Resolution

🟡 Medium   ⏱ 5–30 min  Last verified: 19 April 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 Set Up Victoriametrics on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Set Up Victoriametrics on Debian 10

Introduction Debian 10 Buster is built around the ethos of stability and free software. Setting up set up victoriametrics 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 the […]

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Common Problems 121678

Python SSL Module Errors After OpenSSL Library Changes

🟠 High   ⏱ 5–30 min  Last verified: 18 April 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 Manage systemd Services on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Manage systemd Services on Debian 9

Introduction Deploying manage systemd services on debian 9 on a Debian 9 Stretch 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 Ensure Debian 9 […]

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Common Problems 121115

Debian 10 Kernel Upgrade Leaves Old Kernels Unmanaged

🟢 Low   ⏱ 5–30 min  Last verified: 18 April 2020 Affected versions: Debian 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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