linux server – Page 3 – ITFROMZERO

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.

Virtualization

Managing KVM via Web with Kimchi and Wok: Lightweight, Smooth, and a True Virt-manager Alternative

By admin June 26, 2026

Forget Virt-manager! A detailed guide to installing Kimchi and Wok to manage KVM virtual machines directly from your browser — lightweight, smooth, and perfect for Linux servers.

Virtualization

Installing and Configuring Xen Hypervisor on Debian/Ubuntu: Type-1 Virtualization with XL Toolstack and Dom0

By admin June 24, 2026

A guide to installing Xen Hypervisor on Debian/Ubuntu, configuring Dom0, limiting RAM allocation, and creating DomU virtual machines with the XL toolstack. Covers PVH mode, network bridging, LVM snapshots, and everyday management commands.

Ubuntu

Automating Ubuntu Security Patches: How to Use unattended-upgrades Effectively

By admin June 23, 2026

Configure unattended-upgrades to automatically install security patches on Ubuntu, reducing your attack surface and saving time on routine server administration.

Security

Beyond authorized_keys: Using SSH CA for Centralized Server Access Management

By admin June 22, 2026

Manage hundreds of servers with ease using SSH Certificate Authority (SSH CA). A perfect alternative to traditional Public Keys, enabling instant access revocation and maximum security.

Ubuntu

Ubuntu Autoinstall: The Ultimate Trick for Automated Mass Server Deployment with cloud-init

By admin June 22, 2026

Fully automate the Ubuntu Server installation process with Autoinstall and cloud-init. A detailed guide on creating configuration files and building automated ISOs for mass deployment.

Centos

Mastering LVM on CentOS Stream 9: A Flexible Storage Management Solution for Sysadmins

By admin June 21, 2026

Don't let your server crash due to disk space issues. Here is a detailed guide on configuring LVM on CentOS Stream 9 for flexible storage management and zero-downtime expansion.

Docker

Integrating Docker Containers with systemd on Linux: Running Containers as Real Services

By admin June 17, 2026

A step-by-step guide to integrating Docker containers with systemd so they're managed like native OS services — with automatic startup, dependency control, and stable operation on Linux without Docker Compose.