Operating System Articles - Page 43 of 199

Centralized secure storage is an essential component of many modern IT infrastructures. It allows multiple servers to access a shared storage pool, enabling a higher degree of flexibility, scalability, and availability. One popular method of centralized secure storage is iSCSI (Internet Small Computer System Interface). In this article, we will guide you through the process of setting up an iSCSI initiator client on CentOS. What is iSCSI? iSCSI is a protocol that allows a server to access storage devices over a network. It encapsulates SCSI commands and data into IP packets, allowing the server to communicate with the storage device ... Read More

As a Linux user, you may often find yourself needing to transfer files between different hosts on your network. While there are several ways to do this, the Distributed Copy (DCP) protocol is a peer-to-peer method that offers a convenient and efficient solution. In this blog post, we will explore DCP in more detail, including how to install and use it to transfer files between Linux hosts. We will also discuss some of the security considerations when using DCP, and how to use SSH to ensure secure file transfers. What is DCP? DCP is a protocol that enables peer-to-peer file ... Read More

Databases are at the core of many modern applications, and they allow developers to store and manipulate large amounts of data efficiently. One of the fundamental concepts in database design is the relationship between tables. In this article, we will explore the different types of database relationships and how they are established. Introduction to Database Relationships A database relationship is a link between two tables that defines how the data in the tables is related to each other. Relationships between tables are established using keys, which are unique identifiers that allow data to be connected across tables. There are three ... Read More

In today's fast-paced digital world, having a clear understanding of your network traffic is essential. Whether you are a network administrator or a casual user, monitoring your network traffic can help you identify and troubleshoot potential issues, as well as optimize your network for better performance. One tool that can help you achieve this is Darkstat – a web-based Linux network traffic analyzer. In this blog post, we'll take a closer look at what Darkstat is, how it works, and how you can use it to monitor your network traffic. What is Darkstat? Darkstat is a network traffic analyzer that ... Read More

If you are managing multiple Docker containers, it can be challenging to keep track of their resource utilization, network connectivity, and overall health. Fortunately, there's a tool called ctop that can help. ctop is a top-like interface for monitoring Docker containers in real-time. It provides an intuitive visual representation of container metrics, including CPU, memory, network, and disk usage. In this blog post, we'll take a closer look at ctop, its features, and how to use it effectively. What is ctop? ctop is a command-line tool that provides a top-like interface for monitoring Docker containers. It provides an overview ... Read More

Crontab is a widely used tool for scheduling tasks on Linux systems. It provides a simple way to automate routine tasks, such as backups, system maintenance, and data processing. However, crontab is limited to scheduling tasks based on a specific time or interval. What if you need to run a script only when certain conditions are met, such as when a file is created or when a process is running? In this blog post, we will discuss how to use crontab to execute a job conditionally on a Linux system. Step 1: Identify the Condition The first step is ... Read More

In the world of Linux, scheduling tasks is an important task that administrators need to perform on a regular basis. This is done to automate the process of performing routine tasks and to ensure that they are executed at the right time. There are two popular tools that are used for scheduling tasks in Linux: cron and anacron. Both of these tools have their own unique features and benefits. In this blog post, we will discuss the differences between cron and anacron, and then we will demonstrate how to use anacron to schedule tasks on a Linux system. Cron ... Read More

Creating your own web server and hosting a website from your Linux box is a great way to learn about web development and gain valuable experience. In this article, we will walk you through the process of setting up a basic web server on your Linux box and hosting a website from it. We will cover the following topics − Installing Apache Configuring Apache Creating a website Installing Apache Apache is the most widely used web server software in the world. It is free and open-source, and it runs on almost all operating systems, including Linux. To ... Read More

Apache Virtual Hosts are a powerful feature that allows you to run multiple websites on a single server. With virtual hosts, you can configure Apache to serve different content based on the hostname or IP address of the incoming request. This makes it possible to host multiple websites on a single server, each with their own domain name, content, and settings. In this tutorial, we will show you how to create Apache virtual hosts on a RHEL/CentOS 8.0 server. We will cover the basic concepts of virtual hosts and walk you through the steps of creating virtual hosts using the ... Read More

iSCSI (Internet Small Computer System Interface) is a storage networking technology that allows block-level data to be transported over an IP network. It is an alternative to traditional Fibre Channel SANs (Storage Area Networks) that use dedicated cabling to connect storage devices to servers. iSCSI can provide a cost-effective and flexible way to create a centralized storage infrastructure. In this tutorial, we will set up an iSCSI target on a RHEL/CentOS 7 server and connect to it using an iSCSI initiator on another RHEL/CentOS 7 server. We will configure CHAP (Challenge-Handshake Authentication Protocol) authentication to ensure secure communication between the ... Read More