After reinstalling Debian—whether version 10 (Buster) or 11 (Bullseye)—one of the most common headaches is losing your network configuration. If your setup uses bonded interfaces (LACP / 802.3ad) for redundancy, the reload wipes out all those settings. The system comes up, but there’s no proper connectivity until bonding is restored.This guide walks through the exact steps we follow at SupportPRO to bring the network back up after a reload, get the bonds working again, and make sure SSH is accessible.
Linux
When a mail server stops accepting connections or mail flow becomes intermittent, the problem can come from many layers: DNS, network, firewall, mail server software (Zimbra, Postfix), TLS certificates, or even system resources. This guide walks through practical, step-by-step troubleshooting techniques for Zimbra and Postfix connection issues, shows commands you can run immediately. This blog gives you a detailed guide to troubleshoot similar issues.
How to Enable and Configure Network Bonding in Linux: A Step-by-Step Guide.
Network bonding is a method used to combine multiple network interfaces into a single virtual interface, often to provide redundancy, improve network throughput, or load balance traffic across multiple interfaces. This technology is particularly useful in high-availability systems or environments that require higher network performance. In Linux, network bonding is implemented through the bonding kernel module, which allows multiple physical network interfaces to appear as a single logical interface. This guide explains how to enable and configure network bonding on a Linux system. The steps include loading the bonding module, …
NSclient++ is an agent which can be used to monitor Windows devices. Using this agent we can monitor system metrics, services, and processes on the target machine using the Windows Server configuration Wizard. This agent must be installed on the target Windows Machine/Server. In this scenario, Nagios core is installed on a CentOS machine. Part A Please follow the steps below to install the agent. Windows Monitoring Agent installation: NSClient++ Log on to the Windows target server and download the latest version of NSClient++ software as per the system Architecture. …
Clearing cache memory in Linux is a common task that is often necessary to improve system performance or to troubleshoot issues. One way to clear cache memory without having to reboot the system is by using the sysctl command. The sysctl command can be used to configure kernel parameters at runtime, which allows for various system settings to be adjusted without having to reboot the system. To clear the cache memory in Linux, you can use the following command: root@twenty ~]# sync && sudo sysctl -w vm.drop_caches=3 && sudo sysctl …
Ansible AWX
Ansible is an automation tool that comes under IAAC (infrastructure as a code). Ansible is used for provisioning the infrastructure of the working environment, and virtualized hosts. It can also be used to install services and provision resources inside the cloud infrastructure. Ansible AWX is a freely available project tool for testing, which can be used in the lab, POC environment or deployment. It is considered the foundation on which the Ansible Tower was created. Also, AWX is a code branch that only goes through minimal and quality engineering testing. Basically, …
CyberPanel Migration
CyberPanel is a modern, fast, and secure hosting control panel powered by OpenLitespeed. CyberPanel provides a graphical interface for Linux server management, and a one-click installation of LSCache, WordPress, Prestashop, Joomla, and git. It automates the initial setup for components like DNS, Mail service, and SSL certificates to reduce the time it takes to get set up for hosting. CyberPanel is free and Opensource running on the OpenLiteSpeed web server and can add multiple domains. CyberPanel arrives in two versions CyberPanel and CyberPanel Ent. This article focus on steps to …
GRUB denotes GRand Unified Bootloader. GRUB is a multiboot boot loader software program that first runs when a computer/server starts. Its role is to carry forward from BIOS during the boot, load itself, load the kernel into memory, and then switch over execution to the kernel. Once the kernel picks over, GRUB has fulfilled its task and it is no longer needed. GRUB 2 is a descendant of GRUB. The GRUB 2 configuration file “grub.cfg” is normally located under the directory /boot/grub2. Here we are discussing the boot issue and …

