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Installing OpenVPN on CentOS Stream 9: Enterprise-Grade Security with SELinux

By admin July 20, 2026

A production-ready guide to installing OpenVPN on CentOS Stream 9. Optimize security with AES-256-GCM, configure Firewalld, and manage SELinux without disabling it.

Centos

Installing GitLab CE on CentOS Stream 9: Building Your Own Internal Code and CI/CD Forge

By admin July 16, 2026

Properly install GitLab CE on CentOS Stream 9. Detailed instructions from hardware configuration and SELinux security to free Let's Encrypt SSL setup.

Linux

How to Enable and Configure TCP BBR on Linux Server: Optimize Network Speed and Reduce Latency

By admin July 14, 2026

TCP BBR is Google's congestion control algorithm, built into Linux since kernel 4.9, offering better throughput and lower latency than the default CUBIC. Activation takes just a few sysctl commands — no reboot required, no application code changes.

Monitoring

Lightweight Linux Server Monitoring with Collectd, InfluxDB, and Grafana

By admin July 12, 2026

Install Collectd, InfluxDB, and Grafana to build a lightweight Linux server monitoring system. A perfect solution for low-spec VPS with minimal resource usage.

Linux

systemd-networkd: Minimal Linux Server Network Configuration — Replace NetworkManager with .network Files

By admin July 10, 2026

A guide to switching from NetworkManager to systemd-networkd on a headless Linux server — configure your network with simple .network files that are lighter and boot faster. Includes a 5-minute quick start, static IP and DHCP setup, multi-interface and VLAN configuration, and practical debugging tips from real VPS management experience.

Network

Cloudflare WARP on Linux Server: The ‘Lifesaver’ Solution for Network Performance and IP Security

By admin July 9, 2026

Don't let your server get IP-blocked or throttled on international routes. This guide covers installing Cloudflare WARP on Linux with Proxy Mode to secure and optimize your connection — surprisingly simple to set up.

Fedora

Installing and Configuring Redis on Fedora Server: Handling SELinux and firewalld for High-Performance Cache Server Deployment

By admin July 7, 2026

Redis on Fedora Server won't connect after installation — the root cause typically comes from three layers: the default localhost bind address, firewalld blocking port 6379, and SELinux enforcing mode denying network connections. This article goes straight to fixing all three, with a production security deployment checklist included.

Fedora

How to Install and Configure NFS Server on Fedora: Securely Share Directories on Your Local Network with SELinux and firewalld

By admin July 6, 2026

A guide to installing NFS Server on Fedora from quick start to full detail: configuring /etc/exports, properly opening firewalld, enabling SELinux booleans, and fixing ports so firewall rules survive reboots. Includes instructions for mounting from a client and handling common real-world errors.

Network

Configuring ECMP Routing on Linux: Distributing Traffic Across Multiple Network Paths with ip route

By admin June 30, 2026

ECMP (Equal-Cost Multi-Path) Routing allows Linux to distribute traffic evenly across multiple gateways simultaneously instead of relying on a single default route, increasing real-world bandwidth and reducing failover time. This guide covers configuring ECMP with ip route, controlling weights based on bandwidth, setting up persistent configuration, and resolving asymmetric routing in multi-ISP environments.

Centos

Installing and Configuring Chrony on CentOS Stream 9: Setting Up an NTP Server and Client for Accurate Time Synchronization

By admin June 27, 2026

Clock drift on servers causes all kinds of problems, from SSL handshake failures to unreliable log forensics. This guide walks you through installing Chrony on CentOS Stream 9, setting up an internal NTP server, and configuring clients to sync against it — complete with a production-ready checklist and an Ansible playbook so you never get a 2 AM wake-up call about server clock drift again.