Expose the modern API application on F5XC

In this lab, we will use a modern application based on API first. You can find more details about this app, on Github : https://github.com/f5devcentral/sentence-demo-app

In a nutshell, this application is composed of multiple technology frameworks.

This app will generate a sentence :)

App Documentation

Every WORD pod delivers a list of WORDS. Then, the GENERATOR select one WORD per POD, and generates a SENTENCE in a JSON format

{
    "adjectives": "proud",
    "animals": "lion",
    "colors": "blue",
    "locations": "park"
}

Then, the frontend web application will display all the words in a sentence. If one micro-service is not deployed, the word is not displayed.

In term of micro-services, this is how there are used by the Webapp frontend.

Expose the application on your F5 Distributed Cloud Namespace

The tenant URL for this lab is : https://f5-emea-workshop.console.ves.volterra.io/

For this lab, we will use the following configuration

1. Create the Origin Pool targeting Sentence public app

1. Web App & API Protection -> Load Balancers -> Origin Pool -> Add Origin Pool -> Fill the bellow data

   Object	Value
   Name	sentence-public-endpoint
   Port	80
   TLS	Disable

2. In the same screen -> Origin Servers -> Add Item -> Fill the bellow data -> Apply -> Save and exit

   Object	Value
   DNS name	sentence.emea.f5se.com

2. Create the HTTP LB

1. Web App & API Protection -> Load Balancers -> HTTP Load Balancer -> Add HTTP Load Balancer -> Fill the bellow data -> Save and exit

   Object	Value
   Name	sentence-re-lb
   Domains	sentence-re-$$makeId$$.workshop.emea.f5se.com
   Load Balancer Type	HTTP
   Automatically Manage DNS Records	Enable <- Don't forget this option
   Origin Pools	Click Add Item, for the Origin Pool select $$namespace$$/sentence-public-endpoint -> Apply

3. So far, Sentence application is not protected but exposed all over the world on all F5XC RE. Check your Sentence application is exposed and reachable from the F5XC Global Network by browsing to http://sentence-re-$$makeId$$.workshop.emea.f5se.com

Warning

Some Service Providers have a very long recursive cache. It can take several minutes to get a DNS response. You can change your DNS server to 1.1.1.1 or 8.8.8.8 to fix that.