1. Core Concepts

Question 1

What are the components of Kubernetes?

Answer 1

• Node
• API Server
• etcd
• kubelet
• Container Runtime
• Controller
• Scheduler

Question 2

Node

Answer 2

Node - a worker machine where a container will be lanched

Question 3

API Server

Answer 3

front end to the Kubernetes

Question 4

etcd

Answer 4

etcd - key-store value store… store all data

Question 5

kubelet

Answer 5

Agent that runs in all the workers

Question 6

Container Runtime

Answer 6

Is a undeline software to run containers

Question 7

Controller

Answer 7

• Responsible to notice when a node goes down.
• Create new containers.

Question 8

Scheduler

Answer 8

Distributed the work of the containers

Question 9

Master Node

Answer 9

• kube-apiserver
• controller manager
• scheduler

Question 10

Create a pod with nginx image

Answer 10

kubectl run nginx

Question 11

How edit a pods

Answer 11

> kubectl get pod

> kubectl edit pod <pod-name></pod-name>

To get the yaml file.

> kubectl get pod <pod-name> -o yaml > pod-definit</pod-name>