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Common Problems 117007

Ubuntu 22.04 MySQL Startup Failure After InnoDB Log Size Change

🟡 Medium   ⏱ 5–30 min  Last verified: 27 September 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 Kerberos Authentication on IBM AIX 7.3 — step-by-step IBM AIX 7.3 tutorial on Progressive Robot

How to Configure Kerberos Authentication 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 kerberos authentication on IBM AIX 7.3 with practical […]

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How to Monitor MySQL with Percona Monitoring and Management on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Monitor MySQL with Percona Monitoring and Management on RHEL 9

Percona Monitoring and Management (PMM) is a free, open-source platform built on top of Prometheus, VictoriaMetrics, and Grafana that provides deep visibility into MySQL and other database workloads. PMM separates concerns into a centralised Server component (delivered as a Docker image) and a lightweight Client agent that runs on each database host. This guide walks […]

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How to Set Up iSCSI on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Set Up iSCSI on FreeBSD 12

Introduction This guide explains how to Set Up iSCSI on FreeBSD 12 on FreeBSD 12. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for fine-grained privilege […]

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How to Set Up ProxySQL for MySQL Load Balancing on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Set Up ProxySQL for MySQL Load Balancing on Debian 11

Introduction How to Set Up ProxySQL for MySQL Load Balancing on Debian 11 is a fundamental operation for any administrator maintaining a Debian 11 Bullseye server. Debian 11 Bullseye ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ […]

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How to Configure logrotate on IBM AIX 7.3 — step-by-step IBM AIX 7.3 tutorial on Progressive Robot

How to Configure logrotate 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 logrotate on IBM AIX 7.3 with practical examples […]

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

Debian 11 — rspamd — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 26 September 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-11737 Upstream summary: interface/js/app/history.js in WebUI in Rspamd before 1.6.3 allows XSS via the Subject and Message-Id headers, which are mishandled in the history page. Table of contents […]

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How to Install Lua on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Install Lua on Debian 11

Introduction This guide explains how to Install Lua on Debian 11 on Debian 11 Bullseye. Debian Bullseye 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 11 install with the standard repositories […]

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

How to Configure Virtual Ethernet 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 virtual ethernet on IBM AIX 7.3 with practical […]

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How to Use the Korn Shell (ksh) on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Use the Korn Shell (ksh) on IBM AIX 7.1

Introduction IBM AIX 7.1 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 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to use the korn shell (ksh) on ibm aix 7.1 […]

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