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Open Source Articles
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Understanding Stale file handles in Linux
In this article, we will discuss the concept of stale file handles in Linux and how to understand and resolve them. We'll explore the relationship between file handles, inodes, and the filesystem to understand why stale file handles occur and how to fix them. The examples in this tutorial have been tested on Debian 10.10 (Buster) with GNU Bash 5.0.3. The concepts are POSIX-compliant and apply to most Unix-like systems. What are File Handles? A file handle (or file descriptor) is an integer value that represents a reference to an open file. The operating system maintains a ...
Read MoreCheck if Hard Drive is SSD or HDD on Linux
To determine whether our file system uses SSD or HDD technology, we need to identify which type of storage device is used by our Linux system. Understanding storage hardware helps optimize performance and make informed decisions about data placement. There are many different aspects of Linux storage with numerous tools available for reading and configuring storage devices. We use terms like "drive", "volume", and "mount point" to describe hard drives, optical discs, and USB sticks. To understand the underlying technology, we focus on two key aspects − What physical disk or block device we are examining (using ...
Read MoreDigitally Sign Documents in Linux Using ONLYOFFICE Desktop Editors
Digital signatures are an essential aspect of document security in modern computing. They ensure that the document hasn't been altered and that it comes from a trusted source. Digital signatures are widely used in business, legal, and government settings, but they're also useful for personal documents. ONLYOFFICE Desktop Editors provides Linux users with a comprehensive solution for digitally signing documents using cryptographic methods. What is a Digital Signature? A digital signature is a mathematical technique used to verify the authenticity and integrity of a digital document or message. It provides a way for the recipient of a document ...
Read MoreCreating Software RAID0 (Stripe) on ‘Two Devices’ Using ‘mdadm’ Tool in Linux
RAID 0 (Stripe) stands for Redundant Array of Inexpensive Disks. It is a data storage technique that combines multiple disks into a single logical unit to provide improved performance and storage capacity. RAID 0 uses striping to write data across multiple disks simultaneously, offering faster data access but no redundancy. In this article, we will learn how to create RAID 0 on two devices using the mdadm tool in Linux. What is RAID 0? RAID 0, also known as striping, divides data into blocks and writes them across all disks in the array. This allows for faster ...
Read MoreCreating Virtual Hosts, Generate SSL Certificates _ Keys and Enable CGI Gateway in Gentoo Linux
Setting up a web server to host multiple websites is a common task for system administrators and developers. In this guide, we will cover how to create virtual hosts, generate SSL certificates and keys, and enable CGI gateway in Gentoo Linux. Virtual hosts allow you to host multiple websites on a single server, each with their own unique domain name and content. This is useful when you want to host multiple websites with different purposes or for different clients on a single server. Enabling SSL on your website is important for security and to establish trust with your ...
Read MoreCryptmount – A Utility to Create Encrypted Filesystems in Linux
Cryptmount is a Linux utility that allows you to create encrypted filesystems. With cryptmount, you can create an encrypted container that can be mounted as a virtual drive, and any data stored in that container will be automatically encrypted and decrypted as needed. This provides a secure way to protect sensitive data, even if your computer is compromised. What is Cryptmount? Cryptmount works by creating a virtual block device that can be mounted as a regular filesystem. The data stored on this virtual device is encrypted using strong ciphers, and a key is required to decrypt the data. ...
Read MoreDeploy and Manage Rancher Management Cluster with Workload Cluster in BMC
In the world of containerization and microservices, it has become increasingly important to manage and orchestrate container workloads across a large infrastructure. Rancher is an open-source container management platform that makes it easy to deploy and manage container workloads across multiple clusters and clouds. This article will guide you through the process of deploying and managing a Rancher management cluster with a workload cluster in BMC (Bare Metal Cloud). Prerequisites Before we begin, there are a few prerequisites you need to meet − A BMC account with access to the BMC cloud infrastructure. Familiarity with Kubernetes ...
Read MoreDiscourse - A Modern Forum for Community Discussion
Are you looking for a modern and feature-rich forum platform to host your community discussions? Look no further than Discourse! Discourse is a free, open-source forum software that is designed to be fast, user-friendly, and highly customizable. This article covers everything you need to know to get started with Discourse, including its features, installation, and configuration. What is Discourse? Discourse is a modern, open-source, and feature-rich forum software that allows users to have discussions and share knowledge in a community-driven environment. It is designed to provide a more engaging and interactive experience than traditional forums, with a clean ...
Read MoreDiskonaut – A Terminal Disk Space Navigator for LinuxDisplaying phoenixnap_sysadmin.txt
If you're a Linux user, you're probably used to using the command line interface to navigate your files and directories. One of the challenges of working in a terminal environment is managing disk space. As you install more programs and save more files, your hard drive can quickly become cluttered and disorganized, making it difficult to find the files you need. Fortunately, there are tools available that can help you manage your disk space more efficiently. In this article, we'll be introducing Diskonaut, a terminal-based disk space navigator for Linux. Diskonaut is a lightweight and user-friendly tool that allows ...
Read MoreDNS Best Practices for Security and Performance
DNS (Domain Name System) is the internet's address book, translating human-readable domain names into IP addresses. While essential for web browsing, DNS is also a prime target for cyber attacks including cache poisoning, DDoS attacks, and DNS hijacking. Implementing proper security and performance practices is crucial for maintaining a robust DNS infrastructure. This article covers essential DNS best practices to enhance both security and performance, helping you build a resilient DNS infrastructure that protects against threats while delivering optimal user experience. Use DNSSEC DNSSEC (Domain Name System Security Extensions) provides cryptographic authentication for DNS responses, preventing attackers ...
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