There are multiple sample Operators in this repository. Some more basic examples can be found in the SDK itself, under the samples directory.
webserver: Simple example creating an NGINX webserver from a Custom Resource containing HTML code.
mysql-schema: Operator managing schemas in a MySQL database.
tomcat: Operator with two controllers, managing Tomcat instances and Webapps for these.
Instructions on how to run these samples can be found in the corresponding READMEs.