Linux Foundation Certified Kubernetes Administrator Exam Practice Test

Score: 5%

Task

Monitor the logs of pod bar and:

* Extract log lines corresponding to error file-not-found

* Write them to /opt/KUTR00101/bar

Score:7%

Task

Create a new PersistentVolumeClaim

* Name: pv-volume

* Class: csi-hostpath-sc

* Capacity: 10Mi

Create a new Pod which mounts the PersistentVolumeClaim as a volume:

* Name: web-server

* Image: nginx

* Mount path: /usr/share/nginx/html

Configure the new Pod to have ReadWriteOnce access on the volume.

Finally, using kubectl edit or kubectl patch expand the PersistentVolumeClaim to a capacity of 70Mi and record that change.

Score: 4%

Task

Create a persistent volume with name app-data , of capacity 1Gi and access mode ReadOnlyMany. The type of volume is hostPath and its location is /srv/app-data .

Score: 4%

Task

Create a pod named kucc8 with a single app container for each of the following images running inside (there may be between 1 and 4 images specified): nginx + redis + memcached .

Score: 7%

Task

Create a new NetworkPolicy named allow-port-from-namespace in the existing namespace echo. Ensure that the new NetworkPolicy allows Pods in namespace my-app to connect to port 9000 of Pods in namespace echo.

Further ensure that the new NetworkPolicy:

* does not allow access to Pods, which don't listen on port 9000

* does not allow access from Pods, which are not in namespace my-app

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 --i

For this item, you will have to ssh to the nodes ik8s-master-0 and ik8s-node-0 and complete all tasks on these nodes. Ensure that you return to the base node (hostname: node-1) when you have completed this item.

Context

As an administrator of a small development team, you have been asked to set up a Kubernetes cluster to test the viability of a new application.

Task You must use kubeadm to perform this task. Any kubeadm invocations will require the use of the --ignore-preflight-errors=all option.

Configure the node ik8s-master-O as a master node. .

Join the node ik8s-node-o to the cluster.