Database

Common Problems 122662

Service Fails at Boot Due to rcorder Dependency Gap

🟡 Medium   ⏱ 5–30 min  Last verified: 5 May 2026 Affected versions: FreeBSD 14 📖 ~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 Secure MySQL 9 on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Install MySQL 9 on Ubuntu 26.04

MySQL 9 brings improved performance, enhanced JSON support, and better replication capabilities over previous versions. Ubuntu 26.04 LTS includes MySQL 9 in its default repositories, making installation straightforward. This guide installs, secures, and verifies MySQL 9. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS server A user with sudo privileges Step 1 […]

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How to Secure MySQL 9 on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Configure MySQL Primary-Replica Replication on Ubuntu 26.04

MySQL primary-replica replication asynchronously copies data from a primary server to one or more replica servers. This improves read scalability, provides a hot standby for disaster recovery, and enables backups from the replica without impacting the primary. This guide sets up replication on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Two […]

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How to Secure MySQL 9 on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Install MariaDB 11 on Ubuntu 26.04

MariaDB is a community-developed, drop-in replacement for MySQL with additional storage engines and performance improvements. MariaDB 11 is the latest major release with enhanced features. This guide installs and secures MariaDB 11 on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS server A user with sudo privileges Step 1 […]

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How to Deploy a Django Application with Gunicorn and Nginx on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Deploy a Django Application with Gunicorn and Nginx on RHEL 9

Django is a high-level Python web framework that follows the “batteries included” philosophy — it provides an ORM, authentication, admin interface, form validation, URL routing, templating, and security middleware out of the box. This makes Django the framework of choice for data-driven applications and content management systems where rapid development and maintainability matter. Django’s ORM […]

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How to Secure MySQL 9 on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Install pgAdmin 4 on Ubuntu 26.04

pgAdmin 4 is the most popular open-source administration and development tool for PostgreSQL. It provides a web-based interface for managing databases, writing queries, monitoring server activity, and managing schemas. This guide installs pgAdmin 4 in web mode on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS with PostgreSQL 17 […]

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How to Configure MySQL InnoDB Tuning on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Configure MySQL InnoDB Tuning on FreeBSD 15

Introduction This guide explains how to Configure MySQL InnoDB Tuning on FreeBSD 15 on FreeBSD 15. 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 […]

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How to Install Zabbix on Oracle Linux 10 — step-by-step Oracle Linux 10 tutorial on Progressive Robot

How to Install Zabbix on Oracle Linux 10

Introduction Oracle Linux 10 ships with a stable, security-hardened base that makes deploying install zabbix on oracle linux 10 both straightforward and auditable. This tutorial covers the complete procedure for how to Install Zabbix on Oracle Linux 10, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for network-facing services. […]

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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 Configure Remote Access for MariaDB on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Configure Remote Access for MariaDB on RHEL 10

Introduction RHEL 10 ships with a stable, security-hardened base that makes deploying configure remote access for mariadb both straightforward and auditable. This tutorial covers the complete procedure for how to Configure Remote Access for MariaDB on RHEL 10, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for network-facing services. […]

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