Which statement about the Kube-Proxy is NOT true?

Which statement about the Kube-Proxy is NOT true?

• A. It dynamically configures TCP/UDP and SCTP Forwarding on the system
• B. It provides DNS resolution for Services
• C. It forwards traffic between services and pods
• D. It participates in service load balancing

Answer: (B)

Kube-Proxy operates at the node level to make Kubernetes Services work by configuring the host’s networking rules to forward traffic to the right pods. It watches Services and Endpoints and sets up the necessary iptables or IPVS rules so that a request addressed to a service IP and port is directed to one of the service’s endpoints, providing load balancing across healthy pods. It supports forwarding for the typical transport protocols used by services (TCP and UDP), and SCTP support can be present depending on the environment and version. What it does not do is DNS resolution for Services. DNS in a Kubernetes cluster is handled by a separate DNS add-on (such as CoreDNS or kube-dns), which resolves service names to their cluster IPs. So the statement about providing DNS resolution for Services is not true.

Kube-Proxy operates at the node level to make Kubernetes Services work by configuring the host’s networking rules to forward traffic to the right pods. It watches Services and Endpoints and sets up the necessary iptables or IPVS rules so that a request addressed to a service IP and port is directed to one of the service’s endpoints, providing load balancing across healthy pods. It supports forwarding for the typical transport protocols used by services (TCP and UDP), and SCTP support can be present depending on the environment and version.

What it does not do is DNS resolution for Services. DNS in a Kubernetes cluster is handled by a separate DNS add-on (such as CoreDNS or kube-dns), which resolves service names to their cluster IPs. So the statement about providing DNS resolution for Services is not true.