Posted inLinux
Protecting Linux Files From Root: Mastering chattr and lsattr
Root privileges aren't the final word. Discover the power of chattr and lsattr to lock files, prevent accidental deletion, and harden your Linux server security.
Posted inLinux
Mastering OverlayFS: How to Create an ‘Undo Button’ for Your Linux System
Learn how to use OverlayFS on Linux to protect system data. This article provides a detailed guide on the Copy-on-Write mechanism and how to create a secure sandbox environment.
Posted inVirtualization
Configuring Looking Glass on KVM: The Ultimate Low-Latency Solution for GPU Passthrough
Looking Glass is the ultimate solution for sharing a GPU between a Windows VM and a Linux host with sub-1ms latency using Inter-VM Shared Memory (IVSHMEM).
Posted inCentos
Mastering LVM on CentOS Stream 9: A Flexible Storage Management Solution for Sysadmins
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.
Posted inPython
Accelerating Microservices: Why I Switched from REST to gRPC with Python
gRPC helps reduce payload by 60% and optimizes Microservices latency compared to REST API. This article shares a practical guide with Python and hard-earned lessons from 6 months of production deployment.
Posted inMySQL
MySQL Isolation Levels: Don’t Let Transactions Ruin Your Data
Dirty Read, Non-repeatable Read, and Phantom Read are classic database errors. Learn how MySQL uses four Isolation levels to protect your data.
Posted inVMware
Speed Up VMware VMs: Switching to Virtual NVMe to Unleash SSD Performance
Don't let legacy controllers slow down your SSD. A detailed guide on switching to Virtual NVMe on VMware to reduce latency and boost IOPS for Windows/Linux VMs.
Posted inVMware
Configuring VMware vSphere Fault Tolerance (FT): Achieving Zero Downtime for Mission-Critical Systems
A detailed guide to configuring VMware vSphere Fault Tolerance (FT). Learn how to achieve Zero Downtime, hardware requirements, and practical tips to protect your most critical systems.
Posted inVirtualization
Deploy a VyOS Virtual Router on Proxmox/KVM: Firewall, NAT, and Site-to-Site VPN from A to Z
A hands-on guide to deploying a VyOS virtual router on Proxmox or KVM, covering stateful zone-based firewall, NAT masquerade, port forwarding, and IPsec IKEv2 Site-to-Site VPN. Follows a practical workflow from installation to a production-ready lab network.
Posted inVMware
Configuring vCenter Server High Availability (vCenter HA): Eliminating the Single Point of Failure in Your vSphere Environment
A step-by-step guide to configuring vCenter Server High Availability (vCenter HA) on VCSA 8.0, covering the Active-Passive-Witness architecture, HA network configuration, failover testing, and practical operational tips from a production environment. Eliminate the single point of failure in your vSphere management layer with automatic failover in 4–8 minutes.