Introduction Swapping public IP addresses between cloud instances is a common networking operation that helps in minimizing downtime during infrastructure changes, software upgrades, or troubleshooting. This guide outlines the process of swapping IPv4 addresses between instances via the Customer Portal on NovaCloud or NovaGPU. The ability to swap IP addresses is particularly beneficial for users
Introduction API tokens in WHM provide a secure and efficient way to authenticate API requests without relying on the root password. These tokens serve as credentials that grant controlled access to WHM’s API, allowing system administrators, developers, and automation tools to perform a wide range of administrative tasks programmatically. Using API tokens instead of traditional
Introduction The cPanel API is a comprehensive interface that allows developers, system administrators, and hosting providers to programmatically interact with cPanel and WHM services. It enables automation of administrative tasks such as creating email accounts, managing DNS records, provisioning domains, and performing system-level operations without manually accessing the graphical user interface. cPanel offers three primary
Introduction Linux firewall management has evolved significantly over the years, with iptables being the traditional standard for configuring packet filtering rules. However, with the introduction of the nftables framework in Linux kernel 3.13 and beyond, a more modern and efficient alternative is now available. As of recent Linux distributions—such as Debian 10+, Ubuntu 20.04+, and CentOS/RHEL
Introduction Powering up a cloud instance is a routine task in managing virtual infrastructure. Instances may be stopped for maintenance, to conserve resources, or due to billing limits. The Customer Portal offers a convenient interface to manage these actions without needing technical support. This guide explains how to power up a cloud instance using the
Introduction Certificates are used in pfSense to secure connections such as VPNs, HTTPS access to the web interface, and internal services. These certificates have expiration dates, and if they are not renewed before expiry, services like OpenVPN can stop working. For example, OpenVPN Connect may show the following error if the certificate has expired or
❓ FAQ: Upgrading from CentOS 6 to CentOS Stream 10 (or Alternatives) Can I upgrade directly from CentOS 6 to CentOS Stream 10? No, a direct upgrade from CentOS 6 to CentOS Stream 10 is not supported. You will need to perform a fresh installation and migrate your applications and data manually. ⚠️ Important Note:
Introduction Monitoring system reboots is a critical part of managing and maintaining server uptime and stability. On Linux-based systems, unexpected or unplanned reboots can result from hardware issues, kernel panics, system crashes, power failures, or administrative errors. Identifying the cause and time of such reboots is essential for troubleshooting and improving system reliability. One of
Introduction Name servers play a pivotal role in the Domain Name System (DNS), acting as the bridge between human-readable domain names and machine-understandable IP addresses. Each name server typically has an associated IP address that DNS resolvers use to query domain records. In situations such as server migration, network restructuring, or IP deprecation, updating the
Why Your WebSocket Connection to the GPU Server Keeps Disconnecting Here are the most likely reasons for disconnections—and practical solutions: Common Causes & Fixes 1. Idle Timeout from Load Balancers or Proxies Many environments (Cloudflare, Koyeb, etc.) automatically terminate idle WebSocket connections after a set period—often 100–120 seconds, even when the connection appears active. What