Kuberhealthy
A Kubernetes operator for running synthetic checks as pods
...By creating a custom resource (a KuberhealthyCheck) in your cluster, you can easily enable various synthetic tests and get Prometheus metrics for them. Kuberhealthy comes with lots of useful checks already available to ensure the core functionality of Kubernetes, but checks can be used to test anything you like. We encourage you to write your own check container in any language to test your own applications. It really is quick and easy.