What is Sonobuoy?

Question

Options

• AAn observability plugin for Kubernetes nodes
• BA diagnostic tool used to understand the state of a Kubernetes cluster
• CA distributed tracing platform used for monitoring microservices-based distributed systems
• DA container networking interface plugin

• A
  4% (3)
• B
  93% (65)
• C
  1% (1)
• D
  1% (1)

Explanation

Sonobuoy is a diagnostic tool developed by VMware that runs a set of tests against a Kubernetes cluster to understand its current state, validate conformance, and surface issues - making B correct.

• A is wrong because Sonobuoy is not a node-level observability plugin; it operates at the cluster level and is not analogous to tools like Node Exporter or Datadog agents.
• C is wrong because distributed tracing is the domain of tools like Jaeger or Zipkin - Sonobuoy does not trace requests between microservices.
• D is wrong because CNI plugins (like Calico, Flannel, or Cilium) handle pod networking; Sonobuoy has nothing to do with network interface configuration.

Memory tip: Think of a sonobuoy (the naval device dropped in water to detect submarines) - just as it "listens" to what's happening beneath the surface, Sonobuoy listens to your cluster to surface hidden problems and validate conformance.

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