Jenkins is a widely-used open-source automation server that can be used to automate tasks from building to deploying software. It's pipelines are easy to understand, and you can simply add tasks the same way you would execute them on the command line.

In this tutorial we will install Jenkins on RHEL 8 / CentOS 8, we'll run the server by hand from the command line, install it as a standard service, and deploy it into an Apache Tomcat container.

In this tutorial you will learn:
  • How to run Jenkins by hand
  • How to install Jenkins as a service
  • How to deploy Jenkins into an Apache Tomcat container
  • How to unlock Jenkins
  • How to open the port on the firewall Jenkins is serving on

Maven is a handy project management tool for Java projects. It helps handling multiple projects, can integrate with various IDE (Integrated Development Environment) software, and above all, simplifies build processes. In this tutorial we will install maven on a RHEL 8 / CentOS 8 Linux system, and to test the tool, we'll build and run a simple example application.

In this tutorial you will learn:
  • How to install Maven
  • How to create a basic project
  • How to build the project with Maven
  • How to test the built application

Git is a version-control system, which is used for tracking updates in computer files. Additionally, it may be used for collaborating work on files among a group of people. This article will provide the reader with a step by step information on how to install Git on RHEL 8 / CentOS 8.

In this tutorial you will learn:
  • How to install Git from a standard RHEL 8 / CentOS 8 repository.
  • How to compile and install Git from source code.
  • How to check Git version.

SNMP (Simple Network Management Protocol) is widely used for monitoring and central management purposes. In this tutorial we will install the snmpd service to a RHEL 8 / CentOS 8 machine, enable autostart, and after starting the service, we will test the functioning service with snmpwalk running the default settings.

In this tutorial you will learn:
  • How to install snmp service
  • How to start and enable the service with systemd
  • How to open udp port 161 for remote access
  • How to test the service with snmpwalk from localhost and remove machine

Perl is a well-known programming language with long development history. The same long history provides the countless modules written in it, and distributed in various channels throughout the World Wide Web. As with most programming languages, if you implement something that you find useful, and maybe write it in a generic way, there are high chances others would find it useful too.

If you share your work with others, they don't need to re-implement the wheel, they can spend time on other tools, thus making the community as a whole richer, and we have found the spirit of open source with a short walk. But as many people write perl modules, and perl runs on just about anything, it can be hard to find the module you are looking for, let alone build it in your environment. And that's where cpan comes into play. CPAN itself is a large perl module repository, the cpan tool is a client that is able to fetch and compile needed modules to the local system.

In this tutorial we'll install cpan on a RHEL 8 / CentOS 8, run the initial configuration, and install a module with this tool's help.

In this tutorial you will learn:
  • How to install cpan
  • How to run initial configuration
  • How to install a perl module with cpan

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