Using Ansible in DevOps: A Beginners Guide

Posted on July 28, 2020 by Katherine Kelly | Updated: July 29, 2020
Category: Tutorials | Tags: Ansible, Automation, CentOS, Chef, Chef-Manage, Cookbooks, Deploy, Deployment, Developer, Development, DevOps, IaC, Infrastructure as Code, Open Source, Organization, Playbook, Provisioning, Puppet, Python, Python 3, Remote Management, Salt, SaltStack, Server Administration, YAML

Reading Time: 13 minutes

Introduction

Ansible is a system of configuration management written in Python programming language which uses a declarative markup language to describe configurations. It’s used for automation of configuration and OS setup. It is often used to manage Linux-nodes, but Windows is also supported. It supports work with devices with Python v2.4 and higher installed through SSH connection. In this article, we are going to review the DevOps tool called Ansible.

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How to Install and Use IPython

Posted on July 13, 2020 by Justin Palmer
Category: Tutorials | Tags: CentOS, Code Analysis, Cross Platform, Debugging, Development, Framework, GitHub, IDE, Integrated Development Environment, IPython, Language, Programming, Project, PyCharm, PyCharm Toolbox, Python, Python 3, REPL, Terminal, Ubuntu, Unit Testing

Reading Time: 3 minutes

IPython is a robust Python shell that handles indentation, syntax highlighting, tab completion, and more. In this tutorial, we will cover how to install IPython and walk through how to make use of some features it makes available. Python provides a default REPL or shell for users to run Python code in real-time and see the results. While this default REPL is extremely useful, it does not handle things like indentation, syntax, or highlighting. This is where Ipython shines.

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How to Install and Use Containerization

Posted on June 1, 2020 by Antonia Pollock | Updated: June 4, 2020
Category: Tutorials | Tags: Apache Mesos, API, CentOS, Cloud, Container, Containerization, Continuous Deployment, Continuous Integration, CoreOS, Deployment, Docker, Docker CE, Docker Client, Docker Engine, Docker Hub, Docker Image, Image, LXC, Mesos, OCI, Open Container Initiative, Open Source, OpenVZ, Portable, Repository, REST, UserMod, Virtual Machines, Virtualization, Virtualized

Reading Time: 6 minutes

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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How to Install PHP Extensions on CentOS 8

Posted on May 18, 2020 by Justin Palmer | Updated: June 9, 2020
Category: Tutorials | Tags: CentOS, CentOS 8, Community, DNF, DNF-Utils, Extension, Functionality, Library, Modules, Package Management, Package Manager, PECL, PHP, PHP Extensions, PHP Modules, PHPRedis, Redis, Remi Repository, Repository, Systemctl

Reading Time: 3 minutes

This tutorial covers the installation of the PHP extension phpredis via the default CentOS 8 package manager DNF. It will also cover the installation of both PHP 7.4 and Redis on CentOS 8.

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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How to Install NVM for Node.js on CentOS 8

Posted on May 13, 2020 by David Singer | Updated: May 29, 2020
Category: Tutorials | Tags: Asynchronous, CentOS, CentOS 8, Data Driven Applications, Erbium, JavaScript, Javascript Runtime, js, Latest LTS, Long Term Support, Node Version Manager, Node.js, NVM, NVM Current, NVM Install, Open Source, Runtime Environment

Reading Time: 3 minutes

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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Create a MySQL User on Linux via Command Line

Posted on May 11, 2020 by Justin Palmer
Category: Series, Technical Support, Tutorials | Tags: CentOS, CentOS 6, CLI, Command-line, Create, Database, Linux, MariaDB, MySQL, select, User

Reading Time: < 1 minute

Previous Series:
MySQL via Command Line 101: Basic Database Interaction

Pre-Flight Check

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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How to Set Up and Manage Sudo Permissions

Posted on May 4, 2020 by Ellen Sletton
Category: Tutorials | Tags: Alias, CentOS, Configuration, Debug, Elevated Permissions, Examples, Group, Host, Logging, Nano, Permission Sets, Permissions, Privileges, Root, Subsystem, Sudo, Sudoers, Superuser, Terminal, Ubuntu, Vim, Visudo

Reading Time: 7 minutes

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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How to Install Wildfly on CentOS 8

Posted on May 1, 2020 by Dean Conally
Category: Tutorials | Tags: Application development, Application Server, CentOS, CentOS 8, Firewall, Java, Java Development Kit, Java Platform, Java SDK, Java SE, JBoss AS, Open Java Development Kit, OpenJDK, Provision, Provisioning, Runtime, Software Development, Software Management, WildFly

Reading Time: 4 minutes

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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Using Nmap: Pro Tips and Tricks

Posted on April 28, 2020 by Dean Conally | Updated: May 15, 2020
Category: Tutorials | Tags: .Nmap, ACK, CentOS, CentOS 7, DHCP, DNS, Filter, Fin, GNmap, Handshake, IP Range, Localhost, NDiff, Network, Network Scan, Network Security, NMAP, Open Source, Ping Scan, Port Scan, Port State, PSH, RDNS, SCTP, SMTP, SQL, SQL Scan, Stream Control Transmission Protocol, SYN, TCP, UDP, URG, XMas Scan

Reading Time: 12 minutes

Introduction

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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How To Change the SNMP Port on CentOS

Posted on April 21, 2020 by Justin Palmer | Updated: April 22, 2020
Category: Technical Support | Tags: CentOS, CentOS 6, Command-line, Monitoring, Network, Network Utility, Networking, Port, Security, Simple Network Management Protocol, snmp, SNMPv2c

Reading Time: 2 minutes

Introduction

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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Liquid Web | Knowledge Base

Tag: CentOS

Using Ansible in DevOps: A Beginners Guide

Introduction

How to Install and Use IPython

How to Install PHP Extensions on CentOS 8

How to Install NVM for Node.js on CentOS 8

Create a MySQL User on Linux via Command Line

Pre-Flight Check

How to Install Wildfly on CentOS 8

What is Wildfly?

Using Nmap: Pro Tips and Tricks

Introduction

How To Change the SNMP Port on CentOS

Introduction

Search our Knowledge Base

Introduction

What is Containerization?

Pre-Flight Check

What Is Sudo?

What is Wildfly?

Introduction

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