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What is Containerization?
Containerization is a form of virtualized operating system developed as a response to the many problems of hardware-level virtualization. Because the latter runs a full-blown guest operating system, it is very resource-intensive and incurs a significant amount of overhead, but containerization is much lighter. Since the containers share the host machine’s kernel, the resources are not wasted on running separate operating system tasks. This allows for a much quicker and lightweight deployment of applications.
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PECL, the PHP Extension Community Library, is a repository of C extensions that are loaded directly into PHP. PHP Extensions expand the functionality of PHP. PECL extensions can be installed via the use of the pecl command. There are also PHP extensions provided by package repositories. The decision of which to utilize typically depends on how PHP was installed.
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Node Version Manager, also known as NVM is used to control and manage multiple active versions of Node.js in one system. It is a command line utility and a bash script that allows programmers to shift between different versions of Node.js. They will be able to install any version using a single command and setting defaults using the command line utility.
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- These instructions are intended for creating a MySQL user on Linux via the command line.
- I’ll be working from a Liquid Web Core Managed CentOS 6.5 server, and I’ll be logged in as root.
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What Is Sudo?
Sudo is a Linux program meant to allow a user to use root privileges for a limited timeframe to users and log root activity. The basic thought is to give as few privileges as possible to a user while allowing the user to accomplish a task. The term “Sudo” means substitute user, and do. It is a program used for managing of user permission based on a system configuration file. It allows users to run programs with the privileges of another user, by default, the superuser. The program is supplied for most UNIX and Linux-based operating systems.
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What is Wildfly?
WildFly is a Java runtime application server and software management platform implemented in Java. It is primarily used to provision Java applications and services on a Java-based platform. It is currently developed by Red Hat as open-source software (apart from the community forums) and was better-known as JBoss AS previously. While the WildFly software remains open-source, paid support can be purchased from RedHat if needed. RedHat continues to implement a separate version of this software under the JBoss EAP name.
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In this article, we will review the Nmap software program and multiple commands. Nmap is an open-source mainstream tool used by network administrators to scan ports and map networks. Nmap commands are primarily used to identify which ports certain software is running on our system. It is also used to discover available hosts and what services they are offering and detecting potential security risks. Using Nmap, you can check a single host or a complete network. In this tutorial, we will cover several basic as well as advanced Nmap commands in the “Pro Tips and Tricks” section of the article.
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SNMP, or Simple Network Management Protocol, is widely used to communicate with and monitor network devices, servers, and more, all via IP. In the previous article, we installed an SNMP agent on a CentOS 6.5 server. This agent allows for the collection of data from our server and makes the information available to a remote SNMP manager. To add a little security, we’ll now change the port that SNMP listens on.
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What is Grafana?
This article is a step-by-step guide on how to install Grafana software on CentOS 8 server. Grafana is a popular open-source visualization and analytics monitoring software. It renders graphs, charts, and alerts when connected to supported data sources. It is commonly used with time series databases like Prometheus, SQL databases like MySQL logging, and document databases like Loki, etc. You can additionally install hundreds of plugins and dashboards from the official library.
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What is PyCharm?
PyCharm is an IDE (or Integrated Development Environment) for the Python programming language. It is a cross-platform development environment that is compatible with Windows, macOS, and Linux. It provides a tool that integrates code analysis, graphical debugging, unit testing, and also contains an integrated terminal that supports development on remote hosts and virtual machines.
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