ITGSS Certified DevOps Engineer Practice Test

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What is the difference between ingress and egress traffic in Kubernetes?

Ingress is for internal traffic, egress is for external
Ingress is incoming, egress is outgoing traffic
Ingress refers to management traffic only
There is no difference; they are the same

The correct answer is: Ingress is incoming, egress is outgoing traffic

Ingress and egress traffic in Kubernetes refer to the direction of data flow relative to a cluster or its services. Ingress specifically involves incoming traffic that is directed towards the services within a Kubernetes cluster. This is typically associated with HTTP/S traffic that is managed through Ingress controllers which handle external requests and route them to the appropriate services inside the cluster. On the other hand, egress traffic is outgoing traffic from the Kubernetes cluster to external services or resources. This could include requests made by applications running within the cluster to access APIs, databases, or other external services. Egress rules can help manage and secure this outgoing traffic, ensuring it adheres to organizational policies. Understanding the distinction between these two types of traffic is critical for setting up appropriate networking policies, security measures, and ensuring proper service configuration within a Kubernetes environment.