🟠 High ⏱ 5–30 min Last verified: 26 November 2019 Affected versions: Windows Server 2019 📖 ~2 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 Configure Windows Server 2019 Data Deduplication Data Deduplication (dedup) on Windows Server 2019 reduces storage consumption by identifying and removing duplicate data blocks within a volume, replacing duplicate copies with references to a single shared copy. Deduplication is particularly effective for file shares, virtualization storage (VDI, Hyper-V), and backup repositories, where data duplication […]
How to Configure Windows Server 2019 for High Availability High Availability (HA) in Windows Server 2019 is achieved through multiple technologies that eliminate single points of failure. The primary HA technologies include Failover Clustering for automatic failover of roles and virtual machines, Network Load Balancing for distributing workloads across multiple servers, Always On Availability Groups […]
🟡 Medium ⏱ 5–30 min Last verified: 25 November 2019 Affected versions: Ubuntu 14.04 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 […]
How to Configure Hyper-V Replica for Disaster Recovery on Windows Server 2012 R2 Hyper-V Replica is an asynchronous virtual machine replication feature built into Windows Server 2012 R2 Hyper-V. It continuously replicates virtual machines from a primary site to a replica site over HTTP or HTTPS, enabling rapid failover when the primary site experiences an […]
Introduction How to Use Skaffold for Kubernetes Dev on FreeBSD 12 is a core administration task for any FreeBSD 12 server operator. FreeBSD 12 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for […]
How to Set Up BGP Routing with RRAS on Windows Server 2012 R2 Border Gateway Protocol (BGP) is the routing protocol that underlies internet routing. Windows Server 2012 R2 introduced native BGP support in the Routing and Remote Access Service (RRAS), making it possible to configure a Windows server as a BGP router or BGP […]
Introduction How to Configure OpenDKIM with Postfix on FreeBSD 12 is a core administration task for any FreeBSD 12 server operator. FreeBSD 12 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for packet […]
Introduction to DNS Security on Windows Server 2019 DNS is foundational infrastructure — every name resolution request on your network passes through it. A misconfigured or compromised DNS server can redirect traffic, enable phishing attacks, or facilitate data exfiltration. Windows Server 2019 includes several built-in features to harden DNS, including DNSSEC, Response Rate Limiting (RRL), […]
How to Enable HTTP/2 with Nginx on RHEL 7 HTTP/2 is the major revision of the HTTP network protocol that brings multiplexed streams, header compression, and server push to web traffic. Compared to HTTP/1.1, HTTP/2 dramatically reduces page load times on sites with many assets by eliminating head-of-line blocking and reducing the overhead of repeated […]
