website https://developer.okta.com/blog/2019/05/23/java-microservices-spring-cloud-config
Note: at this time the code was following the newer ELK tutorial below, I still need to roll back to Matt's version above https://developer.okta.com/blog/2019/09/26/get-started-elk-stack
(the main change is switch back to keycloak, from okta)