Using Mesos DNS for Service Discovery in DC/OS

The hands-on lab is part of this learning path

Introduction to DC/OS
course-steps 2 lab-steps 10

Lab Steps

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Logging in to the Amazon Web Services Console
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Understanding the DC/OS Cluster Architecture
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Connecting to the Virtual Machine using SSH with Agent Forwarding
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Installing the DC/OS CLI on Linux
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Discovering a Marathon Application with Mesos DNS
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Discovering a Marathon Application with the Mesos DNS REST API
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Discovering Marathon Applications with Multiple Instances
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DifficultyIntermediate
Duration50m
Students44

Description

Lab Overview

In DC/OS, Mesos DNS provides service discovery facilities for applications and services to find each other via the domain name system (DNS) and a REST API. Mesos DNS is a DC/OS component that runs on master nodes in the cluster. Whenever applications are deployed in the cluster, Mesos DNS records for application instances are automatically created. This Lab takes you through using Mesos DNS for service discovery in DC/OS.

Lab Objectives

Upon completion of this Lab you will be able to:

  • Discover applications by issuing DNS lookup requests to Mesos DNS
  • Discover applications by issuing HTTP requests to Mesos DNS REST API

Lab Prerequisites

You should be familiar with:

  • Basic DC/OS concepts including master nodes, agents, services, tasks, and Marathon
  • Working at the command-line in Linux
  • AWS services knowledge is useful in order to understand the architecture of the pre-created DC/OS cluster, but not required

Lab Environment

Before completing the Lab instructions, the environment will look as follows:

After completing the Lab instructions, the environment should look similar to:

 

Updates

January 10th, 2019 - Added a validation Lab Step to check the work you perform in the Lab

About the Author

Students28993
Labs93
Courses10
Learning paths6

Logan has been involved in software development and research since 2007 and has been in the cloud since 2012. He is an AWS Certified DevOps Engineer - Professional, AWS Certified Solutions Architect - Professional, Microsoft Certified Azure Solutions Architect Expert, MCSE: Cloud Platform and Infrastructure, Google Cloud Certified Associate Cloud Engineer, Certified Kubernetes Administrator (CKA), Certified Kubernetes Application Developer (CKAD), Linux Foundation Certified System Administrator (LFCS), and Certified OpenStack Administrator (COA). He earned his Ph.D. studying design automation and enjoys all things tech.