If you are using CentOS and get this error when trying to install a package, “Could not retrieve mirrorlist http:/mirrorlist.centos.org” … More Update CentOS repositories after mirrorlist End of Life
As an Ansible developer, maintaining clean and readable playbooks is crucial. One of the most effective ways to ensure consistent … More Configuring Vim on RHEL for Efficient Ansible Playbook Development
A list of useful commands to manage linux services with systemctl. Service file configuration example Basic example of a systemd … More systemctl: Linux services cheatsheet
Filesystem / is 100% full In this example we have the root Filesystem 100% full, it’s possible to expand the … More How to extend root Filesystem using LVM in CentOS 7 / RHEL 7
Introduction With Katello & Foreman, you can install and configure the open source version of Red Hat Satellite, to manage … More How to install Foreman & Katello (Satellite free version) on CentOS 7
First of all, check your current keyboard language configuration (in this example the current configuration is ES, Spanish) : With … More Change the default Keyboard input Language in Linux
Lab information For this lab, we will distribute the ssh public key of our main server, Ansible Master to two … More Best way to distribute users’s Public ssh Key to many hosts (no prompt password)
To configure a SSH trust relationship providing authentication via RSA public keys is necessary to follow the next steps: Generate … More Configure SSH trust relationship
– INTRODUCTION Sometimes it’s necessary to execute the tasks of the Playbook with root user in the remote servers. To … More Ansible: Privilege escalation more secure using Ansible-Vault
Comando para mostrar la memoria RAM Con el comando free mostramos información de la memoria RAM de nuestra máquina linux, … More Saber cuanta memoria RAM tengo en Linux