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1. SIMULATION

Create and configure the service front-end-service so it's accessible through NodePort and routes to the existing pod named front-end.

2. SIMULATION

A Kubernetes worker node, named wk8s-node-0 is in state NotReady. Investigate why this is the case, and perform any appropriate steps to bring the node to a Ready state, ensuring that any changes are made permanent.

You can ssh to the failed node using: [student@node-1] $ | ssh Wk8s-node-0

You can assume elevated privileges on the node with the following command: [student@w8ks-node-0] $ | sudo Ci

3. SIMULATION





Task

Create a new Ingress resource as follows:

. Name: echo

. Namespace : sound-repeater

. Exposing Service echoserver-service on

http://example.org/echo using Service port 8080

The availability of Service

echoserver-service can be checked

i

using the following command, which should return 200:

[candidate@cka000024] $ curl -o /de v/null -s -w "%{http_code}n" http://example.org/echo

4. SIMULATION

Get list of all the pods showing name and namespace with a jsonpath expression.

5. SIMULATION

List all the pods sorted by name

6. SIMULATION

Create a file:

/opt/KUCC00302/kucc00302.txt that lists all pods that implement service baz in namespace development.

The format of the file should be one pod name per line.

7. SIMULATION

You must connect to the correct host.

Failure to do so may result in a zero score.

[candidate@base] $ ssh Cka000051

Context

You manage a WordPress application. Some Pods are not starting because resource requests are too

high. Your task Is to prepare a Linux system for Kubernetes. Docker is already installed, but you need

to configure it for kubeadm .

Task

Complete these tasks to prepare the system for Kubernetes:

Set up cri-dockerd :

. Install the Debian package

~/cri-dockerd_0.3.9.3-0.ubuntu-jammy_am

d64.deb

Debian packages are installed using

dpkg.

. Enable and start the cri-docker service

Configure these system parameters:

. Set net.bridge.bridge-nf-call-iptables to 1

8. SIMULATION

List “nginx-dev” and “nginx-prod” pod and delete those pods

9. SIMULATION

Configure the kubelet systemd- managed service, on the node labelled with name=wk8s-node-1, to launch a pod containing a single container of Image httpd named webtool automatically. Any spec files required should be placed in the /etc/kubernetes/manifests directory on the node.

You can ssh to the appropriate node using:

[student@node-1] $ ssh wk8s-node-1

You can assume elevated privileges on the node with the following command:

[student@wk8s-node-1] $ | sudo Ci

10. SIMULATION

Score: 7%





Task

First, create a snapshot of the existing etcd instance running at https://127.0.0.1:2379, saving the snapshot to /srv/data/etcd-snapshot.db.





Next, restore an existing, previous snapshot located at /var/lib/backup/etcd-snapshot-previo us.db

11. 2 https://web.k8s.local

12. SIMULATION

Create a Kubernetes secret as follows:

Name: super-secret

password: bob

Create a pod named pod-secrets-via-file, using the redis Image, which mounts a secret named super-secret at /secrets.

Create a second pod named pod-secrets-via-env, using the redis Image, which exports password as CONFIDENTIAL

13. SIMULATION

Get IP address of the pod C “nginx-dev”

14. SIMULATION

You must connect to the correct host.

Failure to do so may result in a zero score.

[candidate@base] $ ssh Cka000060

Task

Install Argo CD in the cluster by performing the following tasks:

Add the official Argo CD Helm repository with the name argo

The Argo CD CRDs have already been pre-installed in the cluster

Generate a template of the Argo CD Helm chart version 7.7.3 for the argocd namespace and save it to ~/argo-helm.yaml . Configure the chart to not install CRDs.

15. SIMULATION

List the nginx pod with custom columns POD_NAME and POD_STATUS

16. SIMULATION

Create a deployment as follows:

Name: nginx-app

Using container nginx with version 1.11.10-alpine

The deployment should contain 3 replicas

Next, deploy the application with new version 1.11.13-alpine, by performing a rolling update.

Finally, rollback that update to the previous version 1.11.10-alpine.

17. SIMULATION

Create a pod as follows:

Name: mongo

Using Image: mongo

In a new Kubernetes namespace named: my-website

18. SIMULATION

Score:7%





Context

An existing Pod needs to be integrated into the Kubernetes built-in logging architecture (e. g. kubectl logs). Adding a streaming sidecar container is a good and common way to accomplish this requirement.

Task

Add a sidecar container named sidecar, using the busybox Image, to the existing Pod big-corp-app.

The new sidecar container has to run the following command:

/bin/sh -c tail -n+1 -f /va r/log/big-corp-app.log

Use a Volume, mounted at /var/log, to make the log file big-corp-app.log available to the sidecar container.

19. SIMULATION

Given a partially-functioning Kubernetes cluster, identify symptoms of failure on the cluster. Determine the node, the failing service, and take actions to bring up the failed service and restore the health of the cluster. Ensure that any changes are made permanently. You can ssh to the relevant I nodes (bk8s-master-0 or bk8s-node-0) using:

[student@node-1] $ ssh

You can assume elevated privileges on any node in the cluster with the following command:

[student@nodename] $ | sudo Ci

20. SIMULATION

You must connect to the correct host.

Failure to do so may result in a zero score.

[candidate@base] $ ssh Cka000022

Task

Reconfigure the existing Deployment front-end in namespace spline-reticulator to expose port 80/tcp of the existing container nginx .

Create a new Service named front-end-svc exposing the container port 80/tcp .

Configure the new Service to also expose the individual Pods via a NodePort .

21. SIMULATION

Schedule a pod as follows:

Name: nginx-kusc00101

Image: nginx

Node selector: disk=ssd