Kubernetes Container Orchestration Service Mesh 2

Question 1

Which component in Istio is responsible for policy enforcement and telemetry collection?

Accepted Answer

Mixer

Answer

Mixer (in older Istio versions) handles policy enforcement and telemetry aggregation from the data plane proxies.

Question 2

What is the purpose of a VirtualService in Istio?

Accepted Answer

Configure traffic routing rules for a service

Answer

A VirtualService defines how requests are routed to a service, enabling advanced traffic management like weighted routing and retries.

Question 3

In Linkerd, what is the role of the 'control plane' component called the 'destination' service?

Accepted Answer

Provides service discovery and routing policy to proxies

Answer

The destination service in Linkerd's control plane provides service discovery information and routing policy to the data plane proxies.

Question 4

Which Istio resource is used to define a set of traffic policies that apply to a specific service version?

Accepted Answer

DestinationRule

Answer

DestinationRule defines policies like load balancing, connection pooling, and circuit breaking that apply after routing has occurred.

Question 5

What does 'canary deployment' mean in the context of a service mesh?

Accepted Answer

Routing a small percentage of traffic to a new version while the rest goes to the stable version

Answer

Canary deployment gradually shifts traffic to a new version, allowing teams to validate it with a subset of users before full rollout.

Kubernetes Container Orchestration Practice Test