Having 12+ Years of Experience in Software Development
Prerequisites and Initial Setup This guide assumes a RHEL 9 system with root or sudo privileges. We’ll be leveraging Podman for containerization and Nginx as a stream router to direct traffic to isolated developer environments. Ensure Podman is installed and running. If not, execute: sudo dnf install -y podman sudo systemctl enable –now podman.socket Similarly, […]
Diagnosing Journald Log Volume Surges on RHEL 9 Enterprise environments running RHEL 9 often encounter unexpected spikes in systemd-journald log volume, particularly when subjected to intense network scraping or high-throughput application activity. This can rapidly lead to disk space exhaustion, impacting system stability and availability. This post details a systematic approach to diagnosing and mitigating […]
Verifying OpenSSL and Nginx Versions on RHEL 9 Before embarking on performance tuning, it’s crucial to confirm that your RHEL 9 system is running the expected versions of OpenSSL and Nginx. PCI DSS compliance often mandates specific cryptographic library versions and secure TLS configurations. OpenSSL 3.0.x and a recent Nginx version are prerequisites for leveraging […]
Pre-Upgrade Assessment and Preparation Migrating a production RHEL 8 environment, especially one hosting high-throughput Perl Dancer2 applications, to RHEL 9 requires meticulous planning. The primary concern for legacy Dancer2 applications is the potential for breaking changes in core Perl modules or system libraries that these applications depend on. RHEL 9, while offering significant advancements, also […]
Prerequisites and Initial Setup This guide assumes a RHEL 9 minimal installation with root or sudo privileges. We will deploy a highly available WordPress environment leveraging Nginx as the web server, MariaDB for the database, and Redis for object caching. For high availability, we’ll configure two web servers behind a load balancer (HAProxy in this […]
Prerequisites and Environment Setup This guide assumes a CentOS Stream 9 minimal installation. We’ll need development tools, specifically the GCC compiler and its associated libraries, to build GCC 13 from source. The PHP FFI (Foreign Function Interface) extension requires compiled shared libraries (.so files) to interact with C code. This process involves not just compiling […]
Identifying Memory Spikes with `mysqltuner` and `atop` When diagnosing unexpected memory consumption in MySQL 8.0 on Rocky Linux 9, a common culprit is the InnoDB buffer pool. Before diving into configuration, it’s crucial to establish a baseline and pinpoint the exact moments of high memory usage. Tools like mysqltuner and atop are invaluable for this. […]
Prerequisites and Initial Setup This guide assumes a fresh Rocky Linux 9 installation with root or sudo privileges. We’ll be upgrading Apache from its default version (likely 2.4.53 or similar) to a version that robustly supports HTTP/2, and crucially, addressing potential protocol negotiation timeouts that can plague initial deployments. Ensure your system is up-to-date: Run […]
Optimizing PostgreSQL Connectivity on Rocky Linux 9: pg_hba.conf and PgBouncer Tuning Enterprise applications demanding high throughput and low latency often push PostgreSQL to its limits. Effective management of database connections, particularly in high-traffic scenarios on Rocky Linux 9, hinges on meticulous configuration of both PostgreSQL’s host-based authentication (`pg_hba.conf`) and a robust connection pooler like PgBouncer. […]
Rocky Linux 9 System Preparation Before installing Gunicorn and Gevent, ensure your Rocky Linux 9 system is up-to-date and has the necessary development tools. This foundational step is critical for a stable and secure deployment. Begin by updating your package repositories and upgrading existing packages: sudo dnf update -y sudo dnf upgrade -y Next, install […]