Book Image

Hands-On Cloud-Native Microservices with Jakarta EE

By : Luigi Fugaro, Mauro Vocale
Book Image

Hands-On Cloud-Native Microservices with Jakarta EE

By: Luigi Fugaro, Mauro Vocale

Overview of this book

Businesses today are evolving rapidly, and developers now face the challenge of building applications that are resilient, flexible, and native to the cloud. To achieve this, you'll need to be aware of the environment, tools, and resources that you're coding against. The book will begin by introducing you to cloud-native architecture and simplifying the major concepts. You'll learn to build microservices in Jakarta EE using MicroProfile with Thorntail and Narayana LRA. You'll then delve into cloud-native application x-rays, understanding the MicroProfile specification and the implementation/testing of microservices. As you progress further, you'll focus on continuous integration and continuous delivery, in addition to learning how to dockerize your services. You'll also cover concepts and techniques relating to security, monitoring, and troubleshooting problems that might occur with applications after you've written them. By the end of this book, you will be equipped with the skills you need to build highly resilient applications using cloud-native microservice architecture.
Table of Contents (14 chapters)

Node-exporter

Node-exporter is a tool that exposes metrics regarding the Linux kernel server. These metrics are about CPU utilization and memory processes, and can be imported into Prometheus in a time series fashion so that they can be represented graphically.

Installing Node-exporter

Installing Node-exporter is very easy, as we can use its Docker image directly, which is available in the Docker.io referencing it on the OpenShift command:

  1. To install Node-exporter, issue the following commands:
 ./oc new-app prom/node-exporter
--> Found Docker image b3e7f67 (7 weeks old) from Docker Hub for "prom/node-exporter"

An image stream tag will be created called node-exporter:latest, which will track this image. This...