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  • Posts
  • CI / CD Jenkins
    • CI / CD practice with Jenkins
    • Workshop 1 Ortho-rector of markdown documents (test)
    • Workshop 2 Valid HTML5 check and surge.sh deployment (test and deploy)
    • Workshop 3 Continuous integration of django application (Test)
  • Database
    • Install MariaDB in Debian
    • Interconnection of database servers
    • Oracle 19c installation under Debian 12
    • PostgreSQL installation in Debian 12
    • Remote access configuration in Oracle
    • Remote access in MariaDB
  • Docker
    • Docker Compose Installation on Ubuntu 24
    • Docker Installation on Ubuntu 24
    • Workshop 1 Storage and networks in Docker
    • Workshop 2 Multicontainer Scenarios in Docker
    • Workshop 3 Image creation Docker
  • Firewall
    • Fortinet CLI
    • Perimetral with Fortinet I
    • Perimetral with Fortinet II
    • Perimetral with Nftables I
    • Perimetral with Nftables II
  • Linux Drivers
    • Drivers Nvidia
    • How to choose which graph to use on my laptop with Linux
  • Networks
    • Android GNS3-KVM
    • Basic IPv6 scenario
    • GNS3 and Wireshark installation
    • GNS3 installation in Debian 12
    • GNS3 switch configuration
    • IPV6 Tunnels
    • NAT in Cisco and Linux
    • Network monitoring commands
    • OpenStack routing
    • Protocol ARP
    • Underworld
    • Underworld evolution
  • Observability
    • Metrics
      • Prometheus
        • Installation of Prometheus with Docker Compose and Node Exporter on Debian 12
  • Security
    • Forensic computer
    • HTTPS
  • Services
    • Apache
    • DHCP
      • Installation and Configuration of a DHCP Server on Linux
    • DNS
      • BIND9
        • Configuring a Slave DNS Server with BIND9
        • Installation and Configuration of BIND9 on Linux
      • DNSMASQ
        • Local Server with DNSMasq
    • FTP
    • NAT with iptables
    • SSH
  • Systems
    • Active Directory in Ubuntu
    • Centralized collection of logs journald
    • Compilations in LINUX
      • Compilation of a C-program using a Makefile
      • Compilation of a kernel
    • Creation of an automated installation system
    • Install and configure samba in Debian
    • Linux Command
      • Kernel parameter modification exercises
      • Linux processes
      • Module management exercises
      • Package management
      • Packaging and compressors
      • Paid management exercises
      • Task programming
    • Migration in Linnux
      • File system
      • Migtation from CentOS stream 8 to CentOS stream 9
      • Systemd elimination
      • Transformation instance cloud
    • NFS in Debian
    • SELinux activation configuration
    • Share resources in Windows
    • Ssh service in Windows
    • Storage Spaces in Windows Server
  • VPN
    • OpenVPN and Wireguard Comparative
    • OpenVPN remote access
    • Remote access Ipsec StrongSwan
    • Site-to-Site IPsec Cisco
    • Site-to-Site IPsec Fortinet
    • Site-to-Site OpenVPN
    • Site-to-Site Wireguard
    • Wireguard remote access
  • Web applications
    • LAMP stack installation
    • LEMP stack installation
    • WordPress LAMP
    • WordPress LEMP
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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:

  • Sistemas
  • ISO
  • ASO
  • Linux
Wednesday, November 29, 2023 | 2 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:

  • Sistemas
  • ISO
  • ASO
  • Linux
Wednesday, November 29, 2023 | 1 minute Read
Hero Image
Disposal of systemd

Systemd and System V (SysV) are two start-up systems used in Linux distributions to manage system and service boot. System V (SysV) is a traditional start-up system that uses shell scripts stored at different running levels (runlevels) to start and stop services sequentially. It was widely used in many Unix and Linux distributions for decades. On the other hand, Systemd is a more modern and advanced start-up system that replaces SysV. Incorporated to improve system start speed and efficiency, systemd uses a unit-based approach and depends on paralleling to start services simultaneously. It also includes additional features such as service management, sockets, timers, and dependencies, making it a more robust and flexible option compared to SysV.

  • ASO
  • DEBIAN
Wednesday, September 20, 2023 | 3 minutes Read
Hero Image
Migration of a file system

Sometimes, it is necessary to update the storage of our Debian system to meet the growing space needs and improve the organization of the disk. In this guide, we will explore the migration process from a single disk to one with greater capacity, as well as divide it into separate partitions for more efficient management. This process will not only expand the available storage space, but also provide a more orderly structure to the system, facilitating tasks such as backup management, system performance and disk space management.

  • Debian 12
  • Sistemas
  • ISO
  • ASO
Friday, September 8, 2023 | 5 minutes Read
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  • Francisco Javier Cruces Doval

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