Scheduling

You evicted all of the pods from the BFIRE node using command kubectl drain BFIRE. Also, during the maintenance operation, the node is left in the cluster. What command informs Kubernetes to carry on scheduling fresh pods on this nodes?

• kubectl cordon BFIRE

• kubectl drain

• kubectl drain-all

• kubectl uncordon BFIRE

in terms of a multi-container Pod, what is a use case for an ambassador type container?

• Ambassador containers can extend the features of the main container, such as gathering connection details about other applications and allowing the main container access to these resources.

• Ambassador containers can create standardized container output, converting the output into an accepted format, allowing other container standardized access to these resources.

• Ambassador containers can create shared filesystems or volumes, allowing other containers in the Pod quick access to files and resources.

• Ambassador containers can create proxies or gateways to remote applications, which allows the main container to create network connections on localhost.

Apart from the IP address associated with the service, what else does the output of kubectl logs contain when run on a client pod named "dns-frontend"?

• The metrics for each pod and its associated containers.

• The standard output pod information.

• The namespace

• The service name.

Where does a sidecar container stream its application logs to?

• stdout

• log

• klog

• scarlog

What does the node problem detector do?

• Acts as a firewall for all worker nodes in a cluster.

• Acts as a firewall for the main node in a cluster.

• Collects node problems from various sources and reports them to the API Server.

• Reports potential issues with worker nodes to the master node.

Assume that you are applying RBAC's for a sub-admin on a Kubernetes deployment you administrate. The new admin only needs access to cluster resources and a few non-resource endpoints of your deployment. What role can you provide to the new admin?

• A ClusterReader

• A Role

• A ClusterRole

• A PodReader

While deploying container in production, how can you make it easy to track the running image version while still rolling back images properly?

• By avoiding :latest tag.

• By equating ImagePullPolicy to Never.

• By including the :latest tag.

• By equating ImagePullPolicy to Always.

You begin to notice strange behavior in a Pod that is running on a node. You believe that it's an issue with kubelet. How could you check if a node is down?

• Run the get nodes command and check if the status says Down.

• Run the get nodes command and check if the status says NotReady.

• Run the describe nodes command and check if the status says Down.

• Run the describe nodes command and check if the status says NotReady.

You are implementing a sidecar container to collect log data at the Pod level and then transport that data to a destination. As your application grows larger, it is becoming cumbersome to configure every PodSpec. What method could you use that providers the same benefit without the drawbacks of configuring each Pod?

• ElasticSearch

• Pod-level logging

• Cluster-level logging

• A DaemonSet

You have a Kubernetes cluster formed from three nodes and a Pod declaration with the following nodeAffinity. The Pod does not start every time on the node with label = value1. How can you fix this issue?

• Modify change nodeAffinity to NotIn.

• Increase the weight value to enforce rule execution and modify nodeAffinity operator to Exists.

• Set the weight value to 0 which change the overall affinity type to Required.

• Modify nodeAffinity type to requiredDuringSchedulingIgnoredDuringExecution.