I will recognize, I am a large partner out-of feature twigs and you can proud of it. I am aware a number of my personal associates will likely offer myself heck for the (deciding on you Thomas Traude ). A few minutes afterwards We received a notice you to definitely my personal Jenkins make is red-colored.

step one [ERROR] coffee.lang.IllegalStateException: Didn't weight ApplicationContext dos Due to: org.springframework.kidney beans.warehouse.UnsatisfiedDependencyException: Mistake carrying out bean having identity 'kubernetesKubectlCreateProcessor' : Unhappy dependence indicated due to industry 'apiClient' ; nested exception to this rule is org.springframework.kidney beans.warehouse.BeanCreationException: Error carrying out bean which have identity 'defaultApiClient' outlined in classification street capital 3 cuatro Caused by: org . springframework . beans . factory . BeanCreationException: Error creating bean with name ' defaultApiClient ' defined in class path resource 5 six Caused by: org . springframework . beans . BeanInstantiationException: Failed to instantiate [ io . kubernetes . visitors . openapi . ApiClient ]: Warehouse strategy ' defaultApiClient ' tossed exception ; nested exception is java . io . FileNotFoundException: . ( Was a index ) 7 Caused by: java . io . FileNotFoundException: . ( Is a directory ) 

Looks like we have some flaky tests. Depending on the environment, the application context may fail to load. This is the very definition of frustrating, but don't worry, I enjoy these kinds of challenges.

In case you're asking yourself why the tests fail if the builds run in Kubernetes, that's because they don't. Our Jenkins jobs don't run in Kubernetes, since we make extensive use of Testcontainers . If you don't use them, be sure to check them out, awesome. And their new theluckydate maduro cloud solution looks very promising.

Disabling Spring Cloud Kubernetes in screening

Spring Cloud Kubernetes can be disabled in tests using the property .kubernetes.enabled . Drop that property into your tests like so, and you're good to go (or at least it used to work).

1( "test" ) 2(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_Vent, 3 properties ="springtime.affect.kubernetes.enabled=false" >) 4 class ApplicationIT < 5 > 

I didn't understand the issue at first, it should have been disabled. We've been using the new Kubernetes Java Client successfully in other projects, and there the tests aren't flaky. I took another look, turns out that our projects are using different versions. Version 2020.0.1 works as expected.

A change introducing additional configuration properties in the Kubernetes Java Client had an unintentional side-effect; the property .kubernetes.enabled no longer works as expected. There is no longer a single property to disable Spring Cloud Kubernetes.

Issues have been reported here and here , with the fixes scheduled for 2020.0.5 . Unfortunately, as of writing this article, version 2020.0.5 hasn't been released. This enhancement was included in Spring Cloud 2020.0.2 , which explains why the version 2020.0.1 worked in other projects.

2nd sample – using the present fabric8 consumer

1  dependency > 2  groupId > org.springframework.affectgroupId > 3  artifactId > spring-cloud-starter-kubernetes-fabric8-configartifactId > 4dependency > 

Locally the build is green. Push to Jenkins, and wait. Crossing my fingers always helps, so that's what I did. And what do you know, worked like a charm; no issues, nothing, zero, zip. I love when things just work.

I should have known better. The fabric8 client has been serving us well for many years. Don't mess with a running system!

Coaching read upgrading Spring Cloud Kubernetes

It would appear the Spring Cloud Kubernetes Java Client is not yet ready. The Kubernetes Java Client introduced their own Spring integration which doesn't integrate with the Spring configuration properly. Hopefully the two projects are cooperating, and we'll get a nice clean Spring-based configuration in the future. Once version 2020.0.5 is released, I'll give it another try.