day09/40

Question 1

4 types of Services

Answer 1

There are 4 types of Services:

ClusterIP(For Internal access)
NodePort(To access the application on a particular port)
LoadBalancer(To access the application on a domain name or IP address without using the port number)
External (To use an external DNS for routing)

Question 2

4 mast fileds in yaml

Answer 2

apiVersion:
kind:
metadat:
spec:

Question 3

ERROR: “mapping” in YAML

Answer 3

in YAML refers to a key-value pair (e.g., key: value).

Question 4

ERROR: “not allowed in this context”

Answer 4

means that the placement of a key-value pair at that specific position within the YAML structure is invalid according to the Kubernetes schema for the resource being defined.

Question 5

What is the problem with dynamic IP addresses for pods in Kubernetes?

Answer 5

The IP addresses of pods change when they are restarted, making it difficult for them to communicate with each other and with other services.

Question 6

What is the solution to the problem of dynamic IP addresses for pods?

Answer 6

Kubernetes services create a static endpoint (DNS name or IP address) that enables access to pods behind the service.

Question 7

What is the most common type of service in Kubernetes?

Answer 7

ClusterIP - a service available only within the Kubernetes cluster.

Question 8

Which type of Kubernetes service exposes the service on a specific port on all nodes?

Answer 8

NodePort

Question 9

What is the Target Port?

Answer 9

An internal port within the cluster used by services and other pods to access the service.

Question 10

Which type of Kubernetes service creates an external Load Balancer and links it to the service?

Answer 10

LoadBalancer

Question 10

Which type of Kubernetes service maps an external DNS name to a Kubernetes service?

Answer 10

ExternalName

Question 11

What is the difference between a Kind cluster and a regular Kubernetes cluster?

Answer 11

A Kind cluster requires additional configurations to expose external services, unlike a regular Kubernetes cluster.

Question 12

How can you shorten the kubectl command?

Answer 12

By setting an alias in the ~/.bash_profile file - for example: alias k=’kubectl’.

Question 13

What are Endpoints in a Kubernetes service?

Answer 13

A list of the IP addresses of the pods that the service routes traffic to.