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Exam of 19 pages for the course CKAD at CKAD (CKAD Review)
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CKAD ReviewWhat are three URL's for YAML examples for Liveness Probes, Readiness Probes and
multi-container pods? - answerhttps://kubernetes.io/docs/tasks/configure-pod-
container/configure-liveness-readiness-startup-probes/#define-a-liveness-http-request,
https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-
startup-probes/#define-readiness-probes, and https://kubernetes.io/docs/tasks/access-
application-cluster/communicate-containers-same-pod-shared-volume/#creating-a-pod-
that-runs-two-containers.
What is the command to deploy a new nginx webserver? – answer kubectl create
deployment nginx --image=nginx
What is the YAML to add a Liveness Probe on port 80? – answer apiVersion: v1
kind: Pod
metadata:
labels:
test: liveness
name: liveness-http
spec:
containers:
- name: liveness
image: registry.k8s.io/liveness
args:
- /server
livenessProbe:
httpGet:
path: /healthz
port: 80
httpHeaders:
- name: Custom-Header
value: Awesome
initialDelaySeconds: 3
periodSeconds: 3
What is the YAML to add a ReadinessProbe on port 8080? - answerapiVersion: v1
kind: Pod
metadata:
name: goproxy
labels:
app: goproxy
spec:
,containers:
- name: goproxy
image: registry.k8s.io/goproxy:0.1
ports:
- containerPort: 8080
readinessProbe:
tcpSocket:
port: 8080
initialDelaySeconds: 5
periodSeconds: 10
livenessProbe:
tcpSocket:
port: 8080
initialDelaySeconds: 15
periodSeconds: 20
What is the command to test LivenessProbes and Readiness Probes? - answerkubectl
describe pod & kubectl logs
What is the command to output the container logs? - answerkubectl logs
What is the command to user a YAML file to create a pod? - answerkubectl apply -f <file
containing pod info>
What is the YAML to determine resource requirements for a pod? - answerapiVersion:
v1
kind: Pod
metadata:
name: frontend
spec:
containers:
- name: app
image: images.my-company.example/app:v4
resources:
requests:
memory: "64Mi"
cpu: "250m"
limits:
memory: "128Mi"
cpu: "500m"
- name: log-aggregator
image: images.my-company.example/log-aggregator:v6
resources:
requests:
memory: "64Mi"
cpu: "250m"
, limits:
memory: "128Mi"
cpu: "500m"
What is the YAML to create pods with labels? - answerkubectl run --image= --
labels==,=,...
What is the command to delete pods with a specific selector value? - answerkubectl
delete pods -l =
Replace <selector-key> and <selector-value> with the actual key and value of the
selector you want to use. This command will delete all pods that match the specified
selector.
What is the command to create a cronjob in Kubernetes? - answerkubectl create
cronjob --image= --schedule= --
What are some approved URL's to review using persistent and ephemeral volumes? -
answerhttps://kubernetes.io/docs/concepts/storage/persistent-volumes/
https://kubernetes.io/docs/concepts/storage/volumes/#emptydir
https://kubernetes.io/docs/tasks/configure-pod-container/configure-persistent-volume-
storage/
https://kubernetes.io/docs/tasks/configure-pod-container/configure-volume-storage/
https://kubernetes.io/docs/tasks/configure-pod-container/configure-pod-initialization/
https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/
What is the command to create deployments? - answerkubectl create deployment --
image=
Replace <deployment-name> with the desired name for your deployment, and <image-
name> with the name of the Docker image you want to use. This command will create a
new deployment with the specified name and image.
What is the command to update deployments? - answerkubectl set image deployment/
=
Replace <deployment-name> with the name of the deployment you want to update,
<container-name> with the name of the container you want to update, and <new-
image> with the name of the new Docker image you want to use. This command will
update the specified container's image in the specified deployment.
What is the command to troubleshoot deployments? - answerkubectl command kubectl
describe deployment <deployment-name>
What are URL's for YAML examples to create a ConfigMap in Kubernetes? -
answerhttps://kubernetes.io/docs/tasks/configure-pod-container/configure-pod-
configmap/
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