Chapter 7. Service Discovery

Question 1

What is Service Discovery ?

Answer 1

Service-discovery tools help solve the problem of finding which processes are listening at which addresses for which services

Question 2

What features makes a good Service Discovery ?

Answer 2

1. A good service-discovery system will enable users to resolve this information quickly and reliably.
2. A good system is also low-latency; clients are updated soon after the information associated with a service changes.
   3, Finally, a good service-discovery system can store a richer definition of what that service is.

Question 3

What is a Service Object ?

Answer 3

A Service object is a way to create a named label selector

Question 4

Command to create a service:

Answer 4

expose

ej: kubectl expose deployment alpaca-prod

Question 5

What is a Kubernetes DNS Service ?

Answer 5

The Kubernetes DNS service provides DNS names for cluster IPs.

Question 6

Command to create a service and a nodePort:

Answer 6

expose

ej: kubectl expose –nodePort deployment alpaca-prod