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Installing Apache Kafka on CentOS Stream 9: KRaft Mode Deployment Without ZooKeeper

By IT From Zero October 31, 2026

System outages caused by synchronous transaction bottlenecks are a major headache during traffic spikes. Learn how to deploy Apache Kafka on CentOS Stream 9 using KRaft mode, eliminating ZooKeeper to save RAM and streamline operations.

Centos

Configuring BorgBackup on CentOS Stream 9: Automating Backups with ZSTD, Encryption, and Deduplication

By IT From Zero October 29, 2026

A hands-on case study on replacing rsync with BorgBackup on CentOS Stream 9: reducing NAS storage by over 80% and cutting backup times from 3+ hours to 8 minutes with deduplication and ZSTD compression.

Centos

Installing Keycloak on CentOS Stream 9: Building a Production-Ready SSO System with PostgreSQL 16 and Nginx

By IT From Zero October 28, 2026

A detailed guide to deploying Keycloak on CentOS Stream 9 with PostgreSQL 16 and Nginx reverse proxy. Covers SSO architecture, secure systemd configuration, JVM heap optimization, and troubleshooting SELinux in production.

Centos

Installing ModSecurity v3 and OWASP CRS for Nginx on CentOS Stream 9

By IT From Zero October 28, 2026

A comprehensive guide to installing ModSecurity v3 and OWASP CRS for Nginx on CentOS Stream 9. Block SQLi and XSS, inspect audit logs, and tune false positives in production.

Centos

Real-Time File Synchronization on CentOS Stream 9 with Lsyncd and Rsync: A Production-Grade Setup

By IT From Zero October 25, 2026

Configure Lsyncd and Rsync for real-time file synchronization on CentOS Stream 9. Covers kernel inotify tuning, Rsync Daemon setup, and production data loss prevention.

Centos

Installing and Configuring AIDE on CentOS Stream 9: File Integrity Monitoring and Tamper Detection

By IT From Zero October 25, 2026

Compare File Integrity Monitoring solutions and learn how to install and configure AIDE on CentOS Stream 9, optimize disk I/O with ionice, and automate Telegram alerts.

Centos

How to Install Harbor Private Registry on CentOS Stream 9: Configure HTTPS and Block CVEs with Trivy

By IT From Zero October 20, 2026

A step-by-step guide to setting up Harbor Private Registry on CentOS Stream 9 with self-signed SSL/TLS certificates. Includes Trivy engine integration to automatically scan and block pulling container images with critical vulnerabilities.

Centos

Installing and Configuring HashiCorp Vault on CentOS Stream 9: Centralized Secret Management

By IT From Zero October 20, 2026

A hands-on guide to installing HashiCorp Vault on CentOS Stream 9: configuring KV Engine v2, unsealing with Shamir keys, and issuing secure scoped tokens.

Centos

Installing and Configuring Linux Auditd on CentOS Stream 9: Comprehensive Security Event Monitoring

By IT From Zero October 18, 2026

A hands-on guide to deploying Linux Auditd on CentOS Stream 9: configuring kernel rules, tracking original users with auid, and analyzing incident logs via ausearch and aureport.

Centos

How to Install and Configure Caddy Web Server on CentOS Stream 9: Automated SSL/TLS and Performance Optimization

By IT From Zero October 17, 2026

Field-tested insights after running Caddy Web Server on production CentOS Stream 9 for six months. Say goodbye to expired SSL panics and bloated Nginx configs.