Sure Pass Exam CKS PDF

1. For Dockerfile: Fix the image version & user name in Dockerfile2. For mydeployment.yaml : Fix security contexts

Explanation[desk@cli] $ vim /home/cert_masters/Dockerfile

FROM ubuntu:latest # Remove this

FROM ubuntu:18.04 # Add this

USER root                                                                            # Remove this

USER nobody                                                                          # Add this

RUN apt get install -y lsof=4.72 wget=1.17.1 nginx=4.2

ENV ENVIRONMENT=testing

USER root                                                                            # Remove this

USER nobody                                                                          # Add this

CMD ["nginx -d"]

Text Description automatically generated

[desk@cli] $ vim /home/cert_masters/mydeployment.yaml

apiVersion: apps/v1

kind: Deployment

metadata:

creationTimestamp: null

labels:

app: kafka

name: kafka

spec:

replicas: 1

selector:

matchLabels:

app: kafka

strategy: {}

template:

metadata:

creationTimestamp: null

labels:

app: kafka

spec:

containers:

- image: bitnami/kafka

name: kafka

volumeMounts:

- name: kafka-vol

mountPath: /var/lib/kafka

securityContext:

{"capabilities":{"add":["NET_ADMIN"],"drop":["all"]},"privileged": True,"readOnlyRootFilesystem": False, "runAsUser": 65535} # Delete This

{"capabilities":{"add":["NET_ADMIN"],"drop":["all"]},"privileged": False,"readOnlyRootFilesystem": True, "runAsUser": 65535} # Add This

resources: {}

volumes:

- name: kafka-vol

emptyDir: {}

status: {}

Pictorial View:[desk@cli] $ vim /home/cert_masters/mydeployment.yaml

Text Description automatically generated

[desk@cli] $ k create sa backend-qa -n qasa/backend-qa created[desk@cli] $ k get role,rolebinding -n qaNo resources found in qa namespace.[desk@cli] $ k create role backend -n qa --resource pods,namespaces,configmaps --verb list# No access to secret[desk@cli] $ k create rolebinding backend -n qa --role backend --serviceaccount qa:backend-qa[desk@cli] $ vim /home/cert_masters/frontend-pod.yaml

• uk.co.certification.simulator.questionpool.PList@59574970

[desk@cli] $ k apply -f /home/cert_masters/frontend-pod.yamlpod created

[desk@cli] $ k create sa backend-qa -n qaserviceaccount/backend-qa created[desk@cli] $ k get role,rolebinding -n qaNo resources found in qa namespace.[desk@cli] $ k create role backend -n qa --resource pods,namespaces,configmaps --verb listrole.rbac.authorization.k8s.io/backend created[desk@cli] $ k create rolebinding backend -n qa --role backend --serviceaccount qa:backend-qarolebinding.rbac.authorization.k8s.io/backend created[desk@cli] $ vim /home/cert_masters/frontend-pod.yaml

apiVersion: v1

kind: Pod

metadata:

 name: frontend

spec:

 serviceAccountName: backend-qa # Add this

  image: nginx

  name: frontend

[desk@cli] $ k apply -f /home/cert_masters/frontend-pod.yamlpod/frontend created

Text Description automatically generated

Text Description automatically generated