The Best Operating System for Deploying Kubernetes
Compare the best operating systems for deploying Kubernetes, including Ubuntu, RHEL, Flatcar, Bottlerocket, Amazon Linux, and Talos Linux. Learn which OS fits your security, performance, and production needs. Table of Contents 🔈Introduction Selecting the best operating system for deploying Kubernetes is a foundational decision that affects security, reliability, scalability, and operational complexity. While Kubernetes abstracts […]
Btrfs vs. ZFS: Performance, Reliability, and Use-Case Comparison
A comprehensive comparison of Btrfs vs. ZFS covering performance, reliability, features, and real-world use cases to help you choose the right filesystem. Table of Contents 🔈Introduction Modern filesystems do far more than store files. They manage data integrity, snapshots, compression, replication, and recovery—often becoming the backbone of entire server and storage strategies. Two filesystems dominate […]
Optimizing Linux Filesystems for Databases and Virtualization
A practical guide to optimizing Linux filesystems for databases and virtualization, covering ext4, XFS, mount options, performance tuning, and real-world CLI examples. Table of Contents 🔈Introduction Modern databases and virtualized workloads place intense, often competing demands on storage. Low latency, high throughput, predictable performance, and strong data integrity are all non-negotiable—yet they’re influenced heavily by […]
Best Practices for LVM on SAN Storage in RHEL 9
Best practices for using LVM on SAN storage in RHEL 9, including multipathing, performance tuning, volume design, and operational guidance. Table of Contents 🔈Introduction Logical Volume Manager (LVM) remains a cornerstone of enterprise Linux storage management, especially when paired with Storage Area Network (SAN) architectures. In Red Hat Enterprise Linux (RHEL) 9, LVM integrates tightly […]
SELinux vs Fapolicyd on RHEL 8/9: What’s the Difference and Why You Need Both
Compare SELinux and fapolicyd on RHEL 8/9. Learn the core differences between Mandatory Access Control (SELinux) and Application Whitelisting (fapolicyd), why both are essential for a robust defense-in-depth strategy, and how to manage their policies for ultimate system hardening. Table of Contents 🔈Introduction In today’s complex threat landscape, securing a Red Hat Enterprise Linux (RHEL) […]
Migrate Zabbix 6.4 to Zabbix 7.0 LTS
Comprehensive step-by-step guide to migrate Zabbix 6.4 to Zabbix 7.0 LTS for MySQL and PostgreSQL. Includes pre-checks, database commands, schema upgrades, and rollback instructions. Table of Contents 🔈Introduction Upgrading your Zabbix monitoring platform from version 6.4 to version 7.0 LTS is a strategic move that ensures long-term support, improved scalability, and enhanced performance. Active support […]
How to Convert Ext4 Filesystems to Btrfs with Minimal Downtime
Self-explanatory placeholder (typically) matches the keyword catch phrase statement. Table of Contents 🔈Introduction Migrating from Ext4 to Btrfs has become a common objective for Linux administrators who want advanced features—snapshots, transparent compression, checksumming, incremental send/receive, and more—without sacrificing stability. While Ext4 remains a reliable, mature filesystem, Btrfs brings modern capabilities that support better data integrity, […]
How to Analyze and Reduce Linux I/O Latency Using fio, blktrace, and perf
Learn how to analyze and reduce Linux I/O latency with tools like fio, blktrace, and perf. Optimize disk performance to improve throughput, latency, and system efficiency. Table of Contents 🔈Introduction In the world of high-performance computing and data-driven applications, disk I/O latency can often be the Achilles’ heel for system performance. Whether you’re running a […]
How to Benchmark and Optimize Disk Performance on Linux with fio
Learn how to benchmark and optimize disk performance on Linux using fio. This comprehensive guide covers installation, test scenarios, interpreting results, and tuning tips to maximize throughput and minimize latency. Table of Contents 🔈Introduction When you’re managing Linux systems—whether they’re servers, virtual machines, or embedded devices—understanding your disk performance is critical. The versatile utility fio […]
Install Grafana on RHEL 9 | CentOS 9
Learn how to install Grafana on RHEL 9 or CentOS 9—from repository setup through installation, service management, firewall & SELinux configuration, to securing your Grafana environment. Table of Contents 🔈Introduction If you’re working with Grafana and running a modern enterprise Linux environment like Red Hat Enterprise Linux 9 (RHEL 9) or CentOS Stream 9 (or a compatible EL9 distribution), […]