CKA 시험준비

https://www.udemy.com/course/certified-kubernetes-administrator-with-practice-tests/learn/lecture/14224074?start=0#overview

 

시험보기전에 해야할 것

1. Mock Exam 풀기

2. Exam Simulator Test 하기

3. 시험 dump문제 찾아서 풀어보기

4. Exam Environment Demo

 

참고 URL

Certified Kubernetes Administrator: https://www.cncf.io/certification/cka/

Exam Curriculum (Topics): https://github.com/cncf/curriculum

Candidate Handbook: https://www.cncf.io/certification/candidate-handbook

Exam Tips: http://training.linuxfoundation.org/go//Important-Tips-CKA-CKAD

 

주의사항

• 총 2시간 17문항
• 15분전에 입장하기
• 문제마다 weight가 다르니 쉬운 문제부터 풀기!!
• 66점부터 합격 (합격 메일로 통보)
• kubectl config use-context XXX로 cluster 변경해서 시험 진행

 

참고 강의)

https://trainingportal.linuxfoundation.org/learn/dashboard

Course: Certified Kubernetes Administrator (CKA) with Practice Tests | Udemy Business

 

 

CKA Tips!!

• Pod나 deployment 등을 만들 때 kubectl run 등과 같은 command 를 사용해서 만든다.

# Pod 생성 
$  kubectl run nginx --image=nginx --dry-run=client -o yaml
apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: nginx
  name: nginx
spec:
  containers:
  - image: nginx
    name: nginx
    resources: {}
  dnsPolicy: ClusterFirst
  restartPolicy: Always
status: {}

# Deployment 생성
$ kubectl create deployment deploy-nginx --imag
e=nginx --dry-run=client -o yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  creationTimestamp: null
  labels:
    app: deploy-nginx
  name: deploy-nginx
spec:
  replicas: 1
  selector:
    matchLabels:
      app: deploy-nginx
  strategy: {}
  template:
    metadata:
      creationTimestamp: null
      labels:
        app: deploy-nginx
    spec:
      containers:
      - image: nginx
        name: nginx
        resources: {}
status: {}

 

• Service 관련 명령

# Create a Service named redis-service of type ClusterIP to expose pod redis on port 6379
$ kubectl expose pod redis --port=6379 --name redis-service --dry-run=client -o yaml

$ kubectl create service clusterip redis --tcp=6379:6379 --dry-run=client -o yaml 

# Create a Service named nginx of type NodePort to expose pod nginx's port 80 on port 30080 on the nodes:
$ kubectl expose pod nginx --type=NodePort --port=80 --name=nginx-service --dry-run=client -o yaml

$ kubectl create service nodeport nginx --tcp=80:80 --node-port=30080 --dry-run=client -o yaml

• k8s 1.19 이상부터는 --replicas 옵션을 사용해서 deployement를 만들 수 있다.

kubectl create deployment --image=nginx nginx --replicas=4 --dry-run=client -o yaml > nginx-deployment.yaml