Hero Image
Kernel parameter modification exercises

1.Disable apparmor in boot. 2.Disable if possible the Kernel Mode Setting (KSM) of the graphics card. We add the following line in the group configuration: We update the grub to apply the changes: 3 Change the swappiness provisionally so that your equipment swap is activated when more than 90% of the RAM is used. 4 Make swappiness change permanent. You have to run sysctl -p sudo to be applied. 5.Show the value of the forward bit for IPv6.

Wednesday, November 29, 2023 | 1 minute Read
Hero Image
Migtation from CentOS stream 8 to CentOS stream 9

Update the packages Before migrating, make sure your CentOS Stream 8 system has all the latest packages and updates. Eliminate unnecessary packages that appear to us when using the next command as they are orphaned packages Update to CentOS9 Install CentOS 9 repositories: Now let’s update the packages to CentOS 9: When the installation is finished, some packages may be removed: We update the database of the local packages:

Wednesday, November 29, 2023 | 2 minutes Read
Hero Image
Module management exercises

1.Check the loaded modules on your computer. 2.Count the number of modules available in the kernel you are using. 3 Connect a USB pencil and watch the output of the dmesg sudo instruction. We see how the kernel detects the usb device and the necessary modules are loaded for it: We see how the number of modules loaded has increased: 4.Eliminate the module for some non-essential dispotive and check what happens. Put it back on. If we download it we will not be able to make use of exfat file systems:

Wednesday, November 29, 2023 | 2 minutes Read
Hero Image
Packaging management

Indicates the steps to be followed to modify DHCP network configuration to static To configure the ens1 interface with a static IP address (e.g. 192.168.122.10), you must modify the / etc / sysconfig / network-scripts / ifcfg-ens1 file: To apply the configuration we restart the Network Manager: Update the system to the latest versions of the installed packages Install the additional EPEL repository. Install the bash- completion package.

Wednesday, November 29, 2023 | 1 minute Read
Hero Image
Paid management exercises

Work with apt, aptitude, dpkg Exercise 1 What actions I get when performing apt update and apt upgrade. Explain in detail. The apt update command is the first fundamental step in the package update. It takes the following actions: -**Recovers Remote Metadata:**apt update communicates with online software repositories and recovers metadata related to available packages. These metadata include information on the latest versions of the packages, their dependencies and other essential information. -Update the Local Metadata Copy: Then apt reconstructs and updates the local copy of these metadata. This allows the system to quickly access information about the packages without having to download it repeatedly.

Wednesday, November 29, 2023 | 10 minutes Read
Hero Image
Transformation instance cloud

Creation of the LVM scheme We installed the LVM2 package Now we’ll create the partitions on the second disk: We create the group of volumes: We create the root and home volumes: The partitions must have the following format: -vdb2 etx4 FJCD-vg-home ext4 -FJCD-vg-raiz ext4 We would have to format the efi: So would our partition scheme: Copy the partition content Now let’s ride the partitions:

Wednesday, November 29, 2023 | 1 minute Read
Hero Image
LAMP Stack Installation in Debian 12

LAMP Stack Installation in Debian 12 If you are using Debian 12, follow the steps below to install a full LAMP web server on Debian GNU/Linux 12 “Bookworm” (Stable). Note that Debian 12 includes PHP 8.2 in its repositories, which may differ from previous Debian versions. Web Server Installation The first component of a LAMP server is Apache, represented by the “A.” To install Apache, run the following commands: sudo apt install apache2 sudo systemctl enable apache2 && sudo systemctl start apache2 With these commands, you will have installed and activated the Apache web server. You can verify its functionality by entering the server’s IP address in your favorite browser; it should display the default Apache home page.

Saturday, October 28, 2023 | 2 minutes Read
Hero Image
LEMP Stack Installation in Debian 12 with PHP 8

LEMP Stack Installation in Debian 12 with PHP 8 In this guide, we will go through the steps to install a LEMP stack (Linux, Nginx, MariaDB, and PHP) on a Debian 12 server. The configuration includes PHP 8.2 as the main version. The LEMP stack is essential for hosting PHP-based websites and applications, such as WordPress or other dynamic applications. Follow the detailed steps below to configure your LEMP server with PHP 8.2.

Saturday, October 28, 2023 | 3 minutes Read
Hero Image
WordPress installation in Debian 12 with LAMP PHP-8

WordPress installation in Debian 12 with LAMP PHP-8 battery WordPress is a very popular open source content management system (CMS) that is used to create and manage websites and blogs. It was first released in 2003 and has since won a wide user base and an active community of developers and designers. Preparation Before we start installing WordPress, we will make clear in a list what the ecosystem of our server is so everything works out properly:

Saturday, October 28, 2023 | 5 minutes Read
Hero Image
WordPress installation in Debian 12 with PHP-8 LEMP battery

#WordPress installation in Debian 12 with PHP-8 LEMP battery WordPress is a very popular open source content management system (CMS) that is used to create and manage websites and blogs. It was first released in 2003 and has since won a wide user base and an active community of developers and designers. Previous requirements Linux server: You must have a server that runs Linux, the guide is designed for Debian 12. User with superuser permissions: You must have access to a user with sudo privileges on the server in order to perform the installation and configuration tasks. Full Domain Name (FQDN): If you want to access your WordPress site through a custom domain, make sure you have a full domain name (FQDN) set up and pointed to the server. Internet access: You need Internet access to download packages and make updates during the installation process. Make sure you meet all these requirements before you start installing WordPress on your server.

Saturday, October 28, 2023 | 5 minutes Read
Hero Image
Basic IPv6 Scenario

Throughout this guide, we will explore the configuration of a basic scenario using IPv6 networks on both Linux and Cisco devices. We will also address the configuration of an Apache server using IPv6 capabilities. Linux IPV6 Self-Configuration Connect two Linux machines to the same switch and check that they have IPv6 connectivity using the local link address. We’ll check the IPV6 that the different pcs have. PC1 has - > fe80::ef7:42ff:fe92:0/64

Sunday, October 8, 2023 | 13 minutes Read
Hero Image
Active Directory in Ubuntu

In this post, we will explore how to set up an Active Directory environment on an Ubuntu server using tools such as Kerberos and Samba. Active Directory is an integral Microsoft solution for identity management and access control in business networks. Through this guide, we will learn step by step how to implement a Ubuntu server as a domain controller, establish Kerberos-based authentication and configure directory services by using Samba.

Wednesday, September 20, 2023 | 20 minutes Read