Issue 102  30th October 2017

Why is Spring’s Health Down, Down, Up, Up, Up and Down again?

@tvinke's Halloween tale about Spring Boot Actuators, Load balancers and DiskSpaceHealthIndicator.

Read this blog post to understand how to use of Spring Boot actuators in a Grails 3 app.

Change the port of actuator endpoint in a Grails application

Run your app in 8080 and your actuator endpoints in 9000. Good tip by @marcopas

When using actuator endpoints to expose metrics in a Grails (Spring Boot) application, it may be useful to run the metrics on a different port. This enables you to hide the metrics for the public and use the different port in an AWS infrastucture so that the metrics are only available internal.

Please note that it is easy to change the default port(8080) of a Grails 3 app

Live Webinar: Grails 3 for Spring Developers

Price: Free.
Location: Online
Date: November 9th, 2017
Time: 12:30-1:30PM CST

Spring Developer Advocate, @starbuxman, and Grails co-founder, @jeffscottbrown, introduce the Grails framework from the perspective of a Spring developer and demonstrate how these awesome technologies play so well together.

Functional Rest API Testing with Grails/Rest Client Builder

Grails Guide's functional tests use Rest Client Builder to hit JSON endpoints.

@marcopas shows how to add Rest Client Builder to your project and how to use it from your Spock Integration tests.

Note: replace 8080 with ${serverPort}. Integration tests start at a random port. serverPort property, which gets injected automatically, tells you which port.

Create a Docker image that contains your Grails application

@marcopas shows in a step-by-step blog post how to create a docker image of a Grails app.

I think any framework which generates a FAT Jar could use this recipe.