Latest Exam Prep

NO.21 List pod logs named “frontend” and search for the pattern “started” and write it to a file “/opt/error-logs”

NO.22 Score: 4%

Task
Schedule a pod as follows:
* Name: nginx-kusc00401
* Image: nginx
* Node selector: disk=ssd

NO.23 Delete the pod without any delay (force delete)

NO.24 Create a snapshot of theetcdinstance running at , saving thesnapshot to the file path
/srv/data/etcd-snapshot.db.
The following TLScertificates/key are suppliedfor connecting to the server withetcdctl:
* CA certificate:/opt/KUCM00302/ca.crt
* Client certificate:/opt/KUCM00302/etcd-client.crt
* Client key:Topt/KUCM00302/etcd-client.key

NO.25 Change the Image version back to 1.17.1 for the pod you just updated and observe the changes

NO.26 Verify certificate expiry date for ca certificate in /etc/kubernetes/pki

NO.27 Create a namespace called ‘development’ and a pod with image nginx called nginx on this namespace.

NO.28 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.

NO.29 Which one is the correct configuration?

NO.30 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.

NO.31 Set the node named ek8s-node-1 as unavailable and reschedule all the pods running on it.

NO.32 Check nodes which are ready and print it to a file /opt/nodestatus

NO.33 Create an nginx pod and list the pod with different levels of verbosity

NO.34 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.

NO.35 Create a pod as follows:
* Name:non-persistent-redis
* container Image:redis
* Volume with name:cache-control
* Mount path:/data/redis
The pod should launch in thestagingnamespace and the volumemust notbe persistent.

NO.36 Score: 13%

Task
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.

NO.37 Create a pod that having 3 containers in it? (Multi-Container)

NO.38 List the nginx pod with custom columns POD_NAME and POD_STATUS