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System Administration

Plesk update fails after converting the server from Centos 8 to AlmaLinux 8: Failed to download metadata for repo ‘PLESK_18_0_41-extras’

The error you're encountering when trying to update Plesk after converting your server from CentOS 8 to AlmaLinux 8, specifically the "Failed to download metadata for repo 'PLESK_18_0_41-extras'" message, occurs because the Plesk repositories are not properly configured for the new distribution. Solution: Clear YUM/DNF cache: First, clean the package manager cache to ensure it [...]

By |2024-08-25T12:08:27+00:00August 25th, 2024|Plesk, System Administration|0 Comments
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Solutions for real-time file synchronization between servers A and B

To synchronize files in real-time between two servers, there are several solutions you can consider: rsync with inotifywait: Use rsync in combination with inotifywait. inotifywait monitors file system changes on server A, and every time a change is detected, rsync synchronizes the files with server B. This method is very efficient for almost real-time synchronization. [...]

By |2024-08-25T11:44:13+00:00August 25th, 2024|Centos, Dedicated servers, System Administration, Ubuntu|0 Comments
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How to Create a Script to Automate Backups on a Dedicated Server with Multiple Vhosts

Automating backups on a dedicated server hosting multiple websites via vhosts is essential to ensure data security and availability. In this article, you'll learn how to create a Bash script to automate the backup process for different websites hosted on a server with vhosts. I'll include code examples so you can implement it easily. Step [...]

By |2024-08-23T20:59:51+00:00August 23rd, 2024|Scripting, System Administration|0 Comments
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Creating a script for monitoring the free space in the disk and sending an email in case of need

Monitoring disk space is crucial to ensure that servers and systems do not run out of space, which could lead to data loss or system failures. In this article, you will learn how to create a Bash script that monitors disk space and sends an email notification when the available space falls below a specific [...]

By |2024-08-22T22:23:43+00:00August 22nd, 2024|Scripting, System Administration|0 Comments
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Relay Access Denied: What Does It Mean and How to Fix It?

Introduction: In the realm of electronic communications, encountering issues related to email sending and receiving is common. One of the most frequent errors is "Relay Access Denied." In this article, we will explain in detail what this error means, why it occurs, and how you can fix it. What is the Relay Access Denied Error? [...]

By |2024-08-22T21:35:53+00:00August 22nd, 2024|Centos, Dedicated servers, System Administration, Ubuntu|0 Comments
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How to Convert XML to CSV in PHP with Code Example

Converting XML files to CSV is a common task in many web development projects and applications. XML files are widely used to store and transfer structured data, while CSV is a simpler format often used for importing and exporting data to and from spreadsheets and databases. In this article, we will explore how to convert [...]

By |2024-08-18T11:19:51+00:00August 18th, 2024|Centos, Dedicated servers, System Administration, Ubuntu|0 Comments
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The sed Command in Linux: How to Use It and Examples

Introduction The sed command, short for stream editor, is a powerful tool in the Linux world that allows users to perform advanced text editing directly from the command line. Often underappreciated, sed is incredibly useful for processing streams of text in an automated way, making it an essential component for data manipulation in scripts and [...]

By |2024-08-18T10:51:39+00:00August 18th, 2024|Centos, Dedicated servers, System Administration, Ubuntu|0 Comments
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Essential Tasks for Effective Linux Server Administration

"Discover key tasks for mastering Linux server administration, from performance tuning and security management to automation and disaster recovery planning."

By |2024-08-14T15:02:54+00:00August 14th, 2024|Centos, Dedicated servers, System Administration, Ubuntu|0 Comments
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HOW TO EXTRACT A LIST OF EMAIL ACCOUNTS AND PASSWORDS IN PLESK

Sometimes, in the case of migrations or just to obtain information about the email accounts on our server with Plesk, it can be useful to be able to obtain a list of accounts and their passwords for the sysadmins. Well, the way to perform this action is very simple. First you must access the server [...]

By |2024-08-14T07:52:19+00:00August 14th, 2024|Centos, Dedicated servers, System Administration, Ubuntu|0 Comments
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What does Relay Access Denied mean?

"Relay access denied" is an email error that occurs when an email server refuses to relay a message. This generally happens for one of two reasons: Unauthorized Relay: The sender is trying to use the email server to send an email to an address that is not handled by that server, without proper authentication. Email [...]

By |2024-07-02T20:18:28+00:00July 2nd, 2024|Centos, Dedicated servers, System Administration, Ubuntu|0 Comments
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