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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Services and Networking | 20% | - Provide and troubleshoot access to applications via services - Demonstrate basic understanding of NetworkPolicies - Use Ingress rules to expose applications |
| Topic 2: Application Design and Build | 20% | - Define, build and modify container images - Understand multi-container Pod design patterns (e.g., sidecar, init and others) - Choose and use the right workload resource (Deployment, DaemonSet, CronJob, etc.) - Utilize persistent and ephemeral volumes |
| Topic 3: Application Environment, Configuration and Security | 25% | - SecurityContexts - ServiceAccounts - Understand authentication, authorization and admission control - Understanding and defining resource requirements, limits and quotas - ConfigMaps and Secrets - Discover and use resources that extend Kubernetes (CRD, Operators) |
| Topic 4: Application Deployment | 20% | - Use the Helm package manager to deploy existing packages - Use Kubernetes primitives to implement common deployment strategies (e.g., blue/green or canary) - Kustomize - Understand Deployments and how to perform rolling updates |
| Topic 5: Application Observability and Maintenance | 15% | - Utilize container logs - Use built-in CLI tools to monitor Kubernetes applications - Debugging in Kubernetes - Implement probes and health checks - Understand API deprecation policies |
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NEW QUESTION # 235
Exhibit:
Context
A container within the poller pod is hard-coded to connect the nginxsvc service on port 90 . As this port changes to 5050 an additional container needs to be added to the poller pod which adapts the container to connect to this new port. This should be realized as an ambassador container within the pod.
Task
* Update the nginxsvc service to serve on port 5050.
* Add an HAproxy container named haproxy bound to port 90 to the poller pod and deploy the enhanced pod. Use the image haproxy and inject the configuration located at /opt/KDMC00101/haproxy.cfg, with a ConfigMap named haproxy-config, mounted into the container so that haproxy.cfg is available at /usr/local/etc/haproxy/haproxy.cfg. Ensure that you update the args of the poller container to connect to localhost instead of nginxsvc so that the connection is correctly proxied to the new service endpoint. You must not modify the port of the endpoint in poller's args . The spec file used to create the initial poller pod is available in /opt/KDMC00101/poller.yaml
Answer: A
NEW QUESTION # 236 
Task:
1) Create a secret named app-secret in the default namespace containing the following single key-value pair:
Key3: value1
2) Create a Pod named ngnix secret in the default namespace.Specify a single container using the nginx:stable image.
Add an environment variable named BEST_VARIABLE consuming the value of the secret key3.
Answer:
Explanation:
See the solution below.
Explanation:
Solution:
NEW QUESTION # 237 
Context
Developers occasionally need to submit pods that run periodically.
Task
Follow the steps below to create a pod that will start at a predetermined time and]which runs to completion only once each time it is started:
* Create a YAML formatted Kubernetes manifest /opt/KDPD00301/periodic.yaml that runs the following shell command: date in a single busybox container. The command should run every minute and must complete within 22 seconds or be terminated oy Kubernetes. The Cronjob namp and container name should both be hello
* Create the resource in the above manifest and verify that the job executes successfully at least once See the solution below.
Answer:
Explanation:
Solution:
NEW QUESTION # 238
You are tasked with deploying a complex application using Helm. The application consists of multiple microservices, each with its own deployment and service. To simplify the deployment and management of these microservices, you need to implement a mecnanism that allows you to automatically create and manage namespaces based on the name of the Helm release.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create a Custom Helm Chart:
- Begin by creating a custom Helm chart named 'my-app-chart' to manage the application's multiple microservices.
2. Implement a Namespace Creation Function:
- Within the 'my-app-chafltemplatesr directory, create a file named 'namespace-yamr and define the namespace creation function.
- This function uses the Helm release name to dynamically generate a namespace with the format '-namespace' 3. Add the Namespace to the Chan: - Modify the 'my-app-chart/templates/service.yamr and 'my-app-chart/templates/deployment_yamr for each microservice to ensure the deployments and services reside within the dynamically created namespace:
4. Deploy the Chart with Different Releases: - Use tne following command to deploy tne chart with different releases, each creating a separate namespace: bash nelm install release1 my-app-chart helm install release2 my-app-chart - This will create namespaces release1-namespace' and release2-namespace , each containing the deployments and services of the respective releases. 5. Manage and Clean Up: - To manage and clean up the deployments and namespaces, you can use regular Helm commands within the context or each namespace: bash kubectl --namespace release1 -namespace get pods helm delete release1 kubectl delete namespace release1-namespace - This approach provides a structured and automated method for managing multiple microservices within separate namespaces using Helm releases.,
NEW QUESTION # 239
Context
An existing web application must be exposed externally.
You must connect to the correct host . Failure to do so may result in a zero score.
[candidate@base] $ ssh ckad00025
An application externally using the URL external.sterling-bengal.local . Any requests starting with / must be routed to the application web-app.
To test the web application's external reachability, run
[candidate@ckad00025]
$ curl http://external.sterling-bengal.local/
or open this URL in the remote desktop's browser.
Answer:
Explanation:
See the Explanation below for complete solution.
Explanation:
ssh ckad00025
You need to expose the existing app "web-app" externally at:
* Host: external.sterling-bengal.local
* Path: / (and anything starting with /) # route to web-app
In CKAD labs, this is almost always done with an Ingress pointing to the Service web-app.
1) Find where web-app Service lives (namespace + port)
kubectl get svc -A | grep -w web-app
You'll get something like:
<NAMESPACE> web-app ClusterIP ... <PORT>/TCP
Set the namespace:
NS=<NAMESPACE>
Check the service port(s):
kubectl -n $NS get svc web-app -o yaml
Note the service port number (commonly 80).
Also verify it has endpoints (so it actually routes to pods):
kubectl -n $NS get endpoints web-app -o wide
If endpoints are empty, the Service selector doesn't match pods - tell me and I'll give the exact fix. But usually it's fine.
2) Create the Ingress to route / to web-app
Create a manifest (use the service port you saw; I'll assume 80 below):
cat <<'EOF' > web-app-ingress.yaml
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: web-app-ingress
spec:
rules:
- host: external.sterling-bengal.local
http:
paths:
- path: /
pathType: Prefix
backend:
service:
name: web-app
port:
number: 80
EOF
Apply it:
kubectl -n $NS apply -f web-app-ingress.yaml
Verify:
kubectl -n $NS get ingress web-app-ingress
kubectl -n $NS describe ingress web-app-ingress
If your Service port is not 80, change number: 80 to the correct value and re-apply.
3) Test external reachability (as instructed)
Run exactly:
curl
-i http://external.sterling-bengal.local/
If curl still fails (quick checks)
A) Is there an ingress controller running?
kubectl get pods -A | egrep -i 'ingress|nginx'
kubectl get svc -A | egrep -i 'ingress|nginx'
B) Does Ingress show an address?
kubectl -n $NS get ingress web-app-ingress -o wide
C) Do we have endpoints?
kubectl -n $NS get endpoints web-app -o wide
NEW QUESTION # 240
......
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