How to Set Up Zabbix Agent on Windows Server 2012 R2 Zabbix is a mature, enterprise-grade open-source monitoring platform that provides agent-based and agentless monitoring with built-in alerting, trending, dashboards, and auto-discovery. The Zabbix Agent 2 provides active and passive check modes, native Windows performance counter collection, event log monitoring, process monitoring, and support for […]
PostgreSQL provides two complementary tools for database backups: pg_dump and pg_basebackup. pg_dump takes logical backups of individual databases or selected objects and can restore to a different PostgreSQL version or host. pg_basebackup takes a physical, byte-for-byte copy of the entire data directory, which is the foundation of streaming replication and point-in-time recovery. This tutorial covers […]
How to Set Up Microsoft Deployment Toolkit (MDT) on Windows Server 2012 R2 Microsoft Deployment Toolkit (MDT) is a free Microsoft solution that extends Windows Deployment Services to provide a fully automated, zero-touch operating system and application deployment framework. MDT uses task sequences — ordered lists of steps — to deploy Windows, install applications, apply […]
How to Set Up DHCP Server on Windows Server 2019 Dynamic Host Configuration Protocol (DHCP) automates the assignment of IP addresses, subnet masks, default gateways, DNS server addresses, and other network configuration parameters to clients on a network. Without DHCP, every device on a network would require manual IP configuration. Windows Server 2019 includes a […]
Introduction to DFS Replication for File Server Redundancy Distributed File System Replication (DFSR) is a Windows Server 2019 feature that provides multi-master, state-based replication of file data between servers. Unlike the deprecated FRS (File Replication Service), DFSR uses the Remote Differential Compression (RDC) algorithm to replicate only the changed portions of files, dramatically reducing replication […]
How to Configure the Global Catalog on Windows Server 2012 R2 The Global Catalog (GC) is a partial replica of all objects in the Active Directory forest stored on designated domain controllers called Global Catalog servers. Unlike a regular domain controller that holds a full replica of only its own domain, a GC server holds […]
How to Configure Log Rotation with logrotate on RHEL 7 Log files are essential for diagnosing system problems, tracking security events, and auditing application behavior. However, without proper management, log files grow without bound and can fill your disk, causing service outages and making historical logs difficult to navigate. logrotate is the standard log rotation […]
How to Install and Configure Dovecot IMAP Server on RHEL 7 Dovecot is a secure, high-performance IMAP and POP3 server that integrates seamlessly with Postfix on RHEL 7. While Postfix handles the transport of mail (sending and receiving via SMTP), Dovecot provides the retrieval layer — allowing mail clients such as Thunderbird, Outlook, or Apple […]
How to Configure Azure Backup for Windows Server 2012 R2 Azure Backup provides an enterprise-grade, cloud-hosted backup solution that extends Windows Server 2012 R2’s protection capabilities beyond the local network. Using the Microsoft Azure Recovery Services (MARS) agent, you can back up files, folders, and system state directly to Azure without requiring additional backup infrastructure. […]
🔴 Critical ⏱ 5–30 min Last verified: 4 August 2021 Affected versions: 20.04 📖 ~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 […]
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