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Testing of the IEC platform is done in CI/CD using the validation labs described here.
The block diagram below represents how the 'terraform' template uses the join token to create a multi-node cluster. Once the terraform process is over, the test.sh script is run to validate the cluster set-up. If the setup was successful, the script must return the list of nodes. During the terraform process, the config files are moved from the remote machines, both master and worker, to the local machine where terraform processes takes place. The test.sh script moves the master node's config file to ~/.kube/config. Then the 'kubectl get nodes . -A' is executed to validate the cluster.
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