SSH, o shell seguro, es un protocolo cifrado que se usa para administrar servidores y comunicarse con ellos. Al trabajar con un servidor de CentOS, es probable que pase la mayor parte de su tiempo en una sesión de terminal conectada a su servidor a través de SSH. En esta…
L’auteur a choisi le Free and Open Source Fund comme récipiendaire d’une donation dans le cadre du programme Write for Donations. Avec la migration des outils de développement vers le cloud,…
There are three main commands, and a set of common log locations that you can use to get started troubleshooting Apache errors. Generally when you are troubleshooting Apache, you will use these commands in the order indicated here, and then examine log files for specific…
In this tutorial, we will go over the installation of Logstash 1.4.2 and Kibana 3, and how to configure them to gather and visualize the syslogs of our systems in a centralized location. Logstash is an open source tool for collecting, parsing, and storing logs for future use….
The Linux Audit System creates an audit trail, a way to track all kinds of information on your system. It can record a lot of data like types of events, the date and time, user IDs, system calls, processes, files used, SELinux contexts, and sensitivity levels. It can track whether a file has been accessed, edited, or executed. It can even track if changes to file attributes.
In this tutorial, we will setup a basic website using Ajenti V from the Ajenti control panel and create an email account on your website’s domain.
sysdig is a Linux system exploration and troubleshooting tool. In this article we will first introduce basic sysdig usage, and then explore network analysis with sysdig, including an example of auditing network traffic on a CentOS 7 LAMP server.
This will walk you through compiling Node.js with NPM from source on CentOS 6.
Corosync is an open source cluster engine used to implement high availability within applications. This tutorial will demonstrate how to use Corosync and Pacemaker to create a high availability (HA) infrastructure on the cloud provider with CentOS 7 servers and Reserved IPs. To facilitate the process of setting up and managing the cluster nodes, we are going to use PCS, a command line interface that interacts with both Corosync and Pacemaker.
WebP is an open image format developed by Google in 2010 based on the VP8 video format that supports both lossy and lossless image compression. In this tutorial, you will use the command-line tool `cwebp` to convert images to WebP format, creating scripts that will watch and convert images in a specific directory. Finally, you’ll explore two ways to serve WebP images to your visitors.
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