How to Automate Backups with rsync and cron on RHEL 7 Reliable backups are the foundation of any serious system administration strategy. On RHEL 7, rsync combined with cron provides a powerful, scriptable, and highly efficient backup solution that requires no commercial software or complex infrastructure. rsync transfers only changed file blocks over the network, […]
🟡 Medium ⏱ 5–30 min Last verified: 5 December 2019 📖 ~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 […]
Introduction to Microsoft Deployment Toolkit Microsoft Deployment Toolkit (MDT) is a free Microsoft tool that simplifies and automates the deployment of Windows operating systems. While WDS handles PXE-based image distribution, MDT provides a comprehensive task sequence engine that automates every step of an OS deployment including partitioning disks, applying OS images, installing drivers, installing applications, […]
🟠 High ⏱ 5–30 min Last verified: 3 December 2019 Affected versions: RHEL 7 📖 ~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 & […]
How to Set Up a PXE Boot Server on RHEL 7 Provisioning bare-metal servers or virtual machines one by one from USB media does not scale. A PXE (Preboot Execution Environment) boot server lets a machine boot directly from the network, pull a kernel and RAM disk from a TFTP server, and optionally complete an […]
How to Configure Windows Diagnostics and Memory Dump on Windows Server 2016 When a Windows Server 2016 system experiences a kernel-mode crash, also known as a Blue Screen of Death or Bug Check, the operating system can be configured to capture diagnostic information in the form of a memory dump file. Analyzing this dump file […]
How to Configure Redis Cluster and Sentinel on RHEL 7 Redis is an in-memory data structure store used as a database, cache, and message broker. For production environments requiring high availability and horizontal scalability, Redis offers two complementary mechanisms: Redis Cluster for automatic data sharding across multiple nodes, and Redis Sentinel for automatic failover of […]
How to Install Apache Kafka on RHEL 7 Apache Kafka is a distributed event streaming platform designed for high-throughput, fault-tolerant, real-time data pipelines. Originally developed at LinkedIn and later open-sourced under the Apache Software Foundation, Kafka is used by thousands of companies to process trillions of events per day. Unlike traditional message queues, Kafka persists […]
How to Use WMI on Windows Server 2012 R2 Windows Management Instrumentation (WMI) is Microsoft’s implementation of the Web-Based Enterprise Management (WBEM) standard and the central repository of management information on Windows systems. WMI exposes virtually every aspect of a Windows Server 2012 R2 system — hardware inventory, operating system properties, installed software, running processes, […]
🟡 Medium ⏱ 5–30 min Last verified: 27 November 2019 Affected versions: Windows Server 2016 📖 ~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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