Removing managed Kubernetes clusters may be tricky, especially if you are not the one who created them. Since we used GKE to create them, it is faster to use the gcloud CLI tool to delete them. Let's perform the following steps to delete the Kubernetes cluster we created with Jenkins X:

1. Use your cloud provider's instructions to delete the Kubernetes cluster. In our case, we used GKE for the recipe. First, list the clusters:

$ gcloud container clusters list
NAME LOCATION MASTER_VERSION MASTER_IP MACHINE_TYPE NODE_VERSION NUM_NODES STATUS
clustername us-central1-a 1.12.8-gke.10 your_IP n1-standard-2 1.12.8-gke.10 3 RUNNING

2. Delete the cluster using the clustername from the output of step 1:

$ gcloud container clusters delete <clustername>

Now you have learned how to use Jenkins X to create your cluster. This knowledge has prepared you for Chapter 3, Building CI/CD Pipelines, where you will continue to use the environment and learn to import an application as a pipeline in Jenkins X.