ITGSS Certified DevOps Engineer Practice Test

What functions does the ingress controller in a Service Mesh primarily perform?

1. Directing microservice communication

2. Managing data storage

3. Handling external client requests

4. Generating application logs

The correct answer is: Handling external client requests

The ingress controller in a Service Mesh primarily handles external client requests. This role is crucial as it serves as the entry point for external traffic into the microservices architecture. By acting as a reverse proxy, the ingress controller manages routing rules to direct incoming requests to the appropriate services based on specific criteria such as URL paths or hostnames. This functionality allows for centralized control of external access to the services, enabling features such as SSL termination, load balancing, and authentication. The ingress controller plays a vital part in securing and managing the traffic that flows into the microservices ecosystem, making it easier to handle various external client requests efficiently. Other functions like directing microservice communication, managing data storage, and generating application logs are essential components of a microservices architecture but don't fall under the primary responsibilities of the ingress controller. Directing microservice communication typically involves service discovery and internal routing handled by other components. Managing data storage relates to persistence and database interactions, and generating application logs is usually the responsibility of the applications or centralized logging solutions within the architecture.