LVM on Ubuntu is a powerful tool that simplifies disk management by providing flexible and dynamic storage allocation. Whether you’re expanding storage, creating snapshots, or managing multiple file systems, Logical Volume Manager (LVM) offers advanced capabilities that make it easier to adapt to changing storage needs. In this guide, we’ll walk you through the process of … Read more
Mastering system monitoring tools for ubuntu server is essential for ensuring optimal performance, diagnosing issues, and maintaining system reliability. In this tutorial, we’ll explore the best system monitoring tools available for Ubuntu servers, including real-time resource monitoring, disk I/O, network activity, and server dashboards. Previous Article: 01. Introduction to Ubuntu Server – SysOSX: AI & Cloud … Read more
Keeping your Ubuntu Server patched and updated is essential for maintaining security, stability, and compliance. Regular updates protect against vulnerabilities, improve system performance, and ensure adherence to industry standards. This guide provides actionable insights, practical examples, and tools for automating updates and handling kernel patches effectively. Previous Article: 01. Introduction to Ubuntu Server – SysOSX: AI … Read more
Managing software is a fundamental skill for any Ubuntu Server administrator. Whether you’re working in a cloud environment like Azure, AWS, or GCP, or managing on-premises infrastructure, understanding package management tools such as APT is essential for maintaining a secure and optimized system. In this guide, we’ll cover the basics of installing, updating, and managing software, explore … Read more
When migrating virtual machines (VMs) from VMware to Azure, one critical step often overlooked is uninstalling VMware Tools before the migration. If VMware Tools is not removed prior to migration, using standard uninstallation methods after the VM is already on Azure may fail. This can result in leftover services, files, and drivers that interfere with … Read more
Daylight Savings Time (DST) is a system designed to adjust clocks forward by one hour during warmer months to maximize daylight usage and then revert back to standard time during colder months. While most modern operating systems handle DST transitions automatically, the way these adjustments are managed differs between Windows and Linux. This article explores … Read more
Introduction If you’ve worked with Linux systems, you may have noticed directories with names like /etc/logrotate.d/ or /etc/cron.d/. These .d folders follow a convention used by many services, from MariaDB to SSH, and from the kernel to PAM. Once you understand their purpose, you’ll start seeing them everywhere—such as mariadb.conf.d, sshd_config.d, modprobe.d, and pam.d. But why does a system need directories like /etc/logrotate.d/ for placing configuration files … Read more
Introduction In SUSE Linux Enterprise Server (SLES) clusters, the hb_report command is an essential tool for gathering detailed diagnostic information about a High-Availability (HA) cluster. This tool is crucial for troubleshooting cluster issues, identifying failures, and analyzing the health of the cluster environment. Whether you’re an administrator working on an HA cluster or a support engineer diagnosing issues, hb_report simplifies the process by … Read more
Linux provides various commands for text formatting and editing, and one particularly useful command is the nl command. This tool allows you to add line numbers to each line of a text file or input, making it easier to read and organize content. What Does the nl Command Do? The nl command displays the contents of a text file with line numbers added … Read more
Troubleshooting Linux systems often requires browsing logs to identify issues effectively. Knowing the right keywords to search for can help narrow down problems quickly. This guide categorizes common issues and provides relevant keywords and log file suggestions for Linux systems, whether in cloud environments or on-premises. 1. Authentication and Access Issues Keywords: Logs to Check: … Read more