Some examples described herein relate to debugging operator errors in a distributed computing environment. In one example, a system can identify a custom resource managed by an operator in a distributed computing environment. Based on identifying the custom resource, the system can initiate a monitoring process involving detecting events associated with the custom resource. In response to detecting the events, the system can generate log data indicating one or more operations performed by the operator to trigger the events. The system can then store the log data in a debugging log for use in detecting a functional error related to the operator.