Top 50 interview questions and answers for linkerd

1. What is Linkerd?

Linkerd is a service mesh for cloud-native applications.

2. What is a service mesh?

A service mesh is a dedicated infrastructure layer for managing service-to-service communication within a microservices architecture.

3. What are the benefits of using Linkerd?

Linkerd provides observability, reliability, and security for microservices.

4. How does Linkerd provide observability?

Linkerd provides metrics, tracing, and logging for microservices.

5. How does Linkerd provide reliability?

Linkerd provides load balancing, circuit breaking, and retries for microservices.

6. How does Linkerd provide security?

Linkerd provides mTLS encryption and identity-based authorization for microservices.

7. What programming languages does Linkerd support?

Linkerd supports any programming language that can communicate over HTTP.

8. What container orchestration platforms does Linkerd support?

Linkerd supports Kubernetes, Mesos, and Docker Swarm.

9. How does Linkerd integrate with Kubernetes?

Linkerd can be installed as a Kubernetes service mesh using the Linkerd CLI or Helm chart.

10. How does Linkerd integrate with Mesos?

Linkerd can be installed as a Mesos service mesh using the Linkerd CLI.

11. How does Linkerd integrate with Docker Swarm?

Linkerd can be installed as a Docker Swarm service mesh using the Linkerd CLI.

12. What is the Linkerd control plane?

The Linkerd control plane is a set of components that manage the service mesh.

13. What are the components of the Linkerd control plane?

The components of the Linkerd control plane are the Linkerd control plane API, the Linkerd identity service, the Linkerd destination service, and the Linkerd proxy injector.

14. What is the Linkerd data plane?

The Linkerd data plane is a set of proxies that handle service-to-service communication.

15. What are the components of the Linkerd data plane?

The components of the Linkerd data plane are the Linkerd proxy and the Linkerd proxy-init container.

16. What is the Linkerd CLI?

The Linkerd CLI is a command-line tool for installing, configuring, and managing Linkerd.

17. What is the Linkerd dashboard?

The Linkerd dashboard is a web-based user interface for monitoring and managing the service mesh.

18. What is the Linkerd service profile?

The Linkerd service profile is a configuration file that describes how a microservice should be routed and load balanced.

19. What is the Linkerd tap?

The Linkerd tap is a tool for capturing and inspecting traffic between microservices.

20. What is the Linkerd viz?

The Linkerd viz is a tool for visualizing the traffic between microservices.

21. What is the Linkerd Prometheus add-on?

The Linkerd Prometheus add-on is a tool for collecting and storing metrics from the service mesh.

22. What is the Linkerd Grafana add-on?

The Linkerd Grafana add-on is a tool for visualizing the metrics collected by the Linkerd Prometheus add-on.

23. What is the Linkerd Jaeger add-on?

The Linkerd Jaeger add-on is a tool for tracing requests between microservices.

24. What is the Linkerd OpenTracing add-on?

The Linkerd OpenTracing add-on is a tool for instrumenting microservices with OpenTracing.

25. What is the Linkerd TLS add-on?

The Linkerd TLS add-on is a tool for enabling mTLS encryption between microservices.

26. What is the Linkerd identity add-on?

The Linkerd identity add-on is a tool for managing service identities in the service mesh.

27. What is the Linkerd ingress add-on?

The Linkerd ingress add-on is a tool for routing external traffic into the service mesh.

28. What is the Linkerd egress add-on?

The Linkerd egress add-on is a tool for routing service mesh traffic to external services.

29. What is the Linkerd multicluster add-on?

The Linkerd multicluster add-on is a tool for connecting multiple service meshes across different clusters.

30. What is the Linkerd canary add-on?

The Linkerd canary add-on is a tool for testing new versions of microservices in production.

31. What is the Linkerd split add-on?

The Linkerd split add-on is a tool for routing traffic between different versions of microservices.

32. What is the Linkerd retry add-on?

The Linkerd retry add-on is a tool for automatically retrying failed requests between microservices.

33. What is the Linkerd timeout add-on?

The Linkerd timeout add-on is a tool for setting timeouts on requests between microservices.

34. What is the Linkerd circuit breaker add-on?

The Linkerd circuit breaker add-on is a tool for preventing cascading failures between microservices.

35. What is the Linkerd load balancer add-on?

The Linkerd load balancer add-on is a tool for distributing traffic between microservices.

36. What is the Linkerd auto-inject add-on?

The Linkerd auto-inject add-on is a tool for automatically injecting the Linkerd proxy into Kubernetes pods.

37. What is the Linkerd proxy-init add-on?

The Linkerd proxy-init add-on is a tool for initializing the Linkerd proxy in non-Kubernetes environments.

38. What is the Linkerd proxy auto-config add-on?

The Linkerd proxy auto-config add-on is a tool for automatically configuring the Linkerd proxy in non-Kubernetes environments.

39. What is the Linkerd proxy auto-inject add-on?

The Linkerd proxy auto-inject add-on is a tool for automatically injecting the Linkerd proxy into non-Kubernetes environments.

40. What is the Linkerd proxy auto-tls add-on?

The Linkerd proxy auto-tls add-on is a tool for automatically enabling mTLS encryption between microservices in non-Kubernetes environments.

41. What is the Linkerd proxy auto-retry add-on?

The Linkerd proxy auto-retry add-on is a tool for automatically retrying failed requests between microservices in non-Kubernetes environments.

42. What is the Linkerd proxy auto-timeout add-on?

The Linkerd proxy auto-timeout add-on is a tool for automatically setting timeouts on requests between microservices in non-Kubernetes environments.

43. What is the Linkerd proxy auto-circuit breaker add-on?

The Linkerd proxy auto-circuit breaker add-on is a tool for automatically preventing cascading failures between microservices in non-Kubernetes environments.

44. What is the Linkerd proxy auto-load balancer add-on?

The Linkerd proxy auto-load balancer add-on is a tool for automatically distributing traffic between microservices in non-Kubernetes environments.

45. What is the Linkerd proxy auto-injector add-on?

The Linkerd proxy auto-injector add-on is a tool for automatically injecting the Linkerd proxy into non-Kubernetes environments.

46. What is the Linkerd proxy auto-configurator add-on?

The Linkerd proxy auto-configurator add-on is a tool for automatically configuring the Linkerd proxy in non-Kubernetes environments.

47. What is the Linkerd proxy auto-tls-enabler add-on?

The Linkerd proxy auto-tls-enabler add-on is a tool for automatically enabling mTLS encryption between microservices in non-Kubernetes environments.

48. What is the Linkerd proxy auto-retryer add-on?

The Linkerd proxy auto-retryer add-on is a tool for automatically retrying failed requests between microservices in non-Kubernetes environments.

49. What is the Linkerd proxy auto-timeouter add-on?

The Linkerd proxy auto-timeouter add-on is a tool for automatically setting timeouts on requests between microservices in non-Kubernetes environments.

50. What is the Linkerd proxy auto-circuit breakerer add-on?

The Linkerd proxy auto-circuit breakerer add-on is a tool for automatically preventing cascading failures between microservices in non-Kubernetes environments.

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