Set Up OwnCloud for Secure Self-Hosted File Storage on Ubuntu
Install, configure, and secure OwnCloud on Ubuntu for private, self-hosted file storage. Step-by-step setup, HTTPS, and user management included.
Databases Checkpoint
This checkpoint is intended to help you assess what you learned from our introductory articles to Databases, where we defined databases and introduced common database management systems.
How to Configure System Center Operations Manager (SCOM) Agent on Windows Server 2012 R2
How to Configure System Center Operations Manager (SCOM) Agent on Windows Server 2012 R2 System Center Operations Manager (SCOM) 2012 R2 provides enterprise-grade monitoring for Windows Server 2012 R2 environments. The SCOM agent, installed on each managed server, collects health state data, performance counters, event log entries, and application-specific metrics, then transmits them to the […]
How to Configure Process Resource Manager 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 configure process resource manager on ibm aix 7.1 on […]
How to Configure VNC Server 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 configure vnc server on ibm aix 7.1 on IBM […]
Ubuntu 20.04 LTS DPKG Interrupted State Blocks Install
🟡 Medium ⏱ 5–30 min Last verified: 24 April 2021 📖 ~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 […]
How to Install Zabbix on RHEL 7
How to Install Zabbix on RHEL 7 Zabbix is a mature, enterprise-grade open-source monitoring platform that supports agent-based and agentless monitoring of servers, network devices, applications, and cloud resources. It combines metrics collection, event correlation, alerting, and visualisation in a single self-hosted solution — making it a compelling choice for organisations that need full control […]
Ubuntu 16.04 LTS MySQL Refuses Connections After Crash Recovery
🟠 High ⏱ 5–30 min Last verified: 21 April 2021 Affected versions: 16.04 LTS 📖 ~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 & […]
Ubuntu 20.04 LTS APT Lock Error Blocks Package Updates
🟡 Medium ⏱ 5–30 min Last verified: 21 April 2021 📖 ~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 […]
How to Configure Huge Pages for Database Performance on RHEL 8
Huge pages reduce the overhead of virtual memory management by using larger memory page sizes — typically 2 MB instead of the default 4 KB. For memory-intensive databases such as Oracle, PostgreSQL, and MySQL, huge pages eliminate millions of Translation Lookaside Buffer (TLB) misses per second, lower page table walk overhead, and prevent the kernel […]