How to hold packages with apt-get in Debian and Ubuntu
Tabla de contenido1 Package retention when using apt-get/apt (method 1)1.1 Step 1 – List of available updates1.2 Step 2 – Force apt-get to retain the package named php7.4 using apt-mark1.3 …
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How to kill zombie processes in Linux
Tabla de contenido1 What is a zombie process?2 Detecting zombie processes3 Causes of this behavior4 How do we kill a zombie process?4.1 Massively eliminating zombies Let’s see how to kill …
Basic HTTP Routing and Balancing with HAProxy
Tabla de contenido1 What is HAProxy?1.1 Features1.2 Main working modes1.3 Balance modes1.4 Sticky sessions1.5 Ejemplo de balanceo por defecto1.6 Example of various types of balancing1.6.1 Roundrobin1.6.2 Source1.6.3 Leastconn2 Healthchecks2.1 Active …
The importance of upgrading systems
Tabla de contenido1 Latest media vulnerabilities2 How to perform the upgrade process As you have probably seen in the media lately, the importance of updating systems is more visible than …
Best practices building images with Dockerfiles
Tabla de contenido1 Order matters2 Lighten the image by deleting files3 Reduces the number of files4 Avoid including files that you should not by using “.dockerignore”.5 Specifies the base image …
Why we should containerize our applications
Tabla de contenido1 So why “waste time” passing the application to containers? 2 Well, what else does it bring us to have the application ready to run in a container?3 …
How to configure SNMP to monitor our server
Tabla de contenido1 What is SNMP?2 Installing the service Hello again! Finally after a long stop of a month and a half without publishing, we are back to work. Today …
Using Docker from Python
Tabla de contenido1 1. Installing Docker API package2 2. Where do we start2.1 1. Declare the docker being used2.2 2. Create container and start them2.3 3. List containers2.4 4. Starting …
How to get started with docker
Tabla de contenido1 1- What is docker?2 2- What advantages does it have?3 3- How can I use it?4 4- Useful commands4.1 Start containers (even if the images have not …
4 Points to consider when configuring a network interface on linux
Tabla de contenido1 1. We have no network in the system2 2. We have configured the interface and we are still without network3 3. We have had network configured but …