2V0-71.23 questions and answers

A rolling upgrade is a method of upgrading a Kubernetes cluster without downtime by gradually replacing nodes or components with newer versions. A rolling upgrade ensures that there is no disruption to the availability and functionality of the cluster during the upgrade process. A rolling upgrade can be performed manually or using tools such as kubeadm or kops 5.
The other options are incorrect because: In-place upgrade of each node is a method of upgrading a Kubernetes cluster by stopping each node or component and updating it to the newer version. This method can cause downtime and disruption to the cluster during the upgrade process.
Use canary upgrade is not a valid method of upgrading a Kubernetes cluster. A canary upgrade is a technique for deploying new versions of applications or services by gradually exposing them to a subset of users or traffic before rolling them out to everyone 6. It is not applicable to cluster upgrades. Deploy a new cluster with upgraded Kubernetes release is not a method of upgrading a Kubernetes cluster, but rather creating a new one. This method canbe costly and time-consuming, as it requires migrating all the resources and configurations from the old cluster to the new one.
References:
Upgrade A Cluster, Canary deployments

A Deployment is a Kubernetes object that allows you to perform a rolling update without disrupting services. A Deployment manages a ReplicaSet or a Pod and provides declarative updates for them. You can describe the desired state of your application using a Deployment, and it will change the actual state to the desired state at acontrolled rate. A Deployment also allows you to roll back to a previous version if something goes wrong during the update 14.
The other options are incorrect because: A ReplicaSet is a Kubernetes object that ensures that a specified number of pod replicas are running at any given time. It does not provide any mechanism for updating or rolling back pods 15.
A Service is a Kubernetes object that defines a logical set of pods and a policy to access them. It does not provide any mechanism for updating or rolling back pods 16.
A Container is not a Kubernetes object, but rather a component of a Pod. A Pod is the smallest deployable unit of computing in Kubernetes. A Pod can contain one or more containers that share storage and network resources. A Pod does not provide any mechanism for updating or rolling back itself or its containers 17.
References:
Deployments, ReplicaSets, Services, Pods

VMware Aria Operations for Applications (formerly VMware Tanzu Observability) is a SaaS solution that collects and analyzes traces, metrics, and logs from various sources, including Tanzu Kubernetes Grid clusters, applications, and services. It provides a single source of truth for actionable insights into the performance, availability, and behavior of the entire application stack. It also enables users to create dashboards, alerts, and reports based on the collected data.
The other options are incorrect because: Watches defined infrastructure systems to keep track of health of resources is a description of VMware Tanzu Mission Control, which is another SaaS solution that provides centralized management and governance for Tanzu Kubernetes Grid clusters across multiple platforms.
Automates the remediation of Kubernetes platform resources based on collected data is a description of VMware Tanzu Service Mesh, which is a service thatcreates an enterprise-class service mesh for consistent control and security for microservices, end users, and data.
Tracks metrics, logs, and alerts based on specified thresholds is a partial description of VMware Aria Operations for Applications, but it does not mention the trace analysis and the single source of truth features.
References:
VMware Tanzu for Kubernetes Operations Getting Started, VMware Aria Operations for Applications Documentation

VMware Tanzu Mission Control and Tanzu CLI package plugin are two methods that can be used to install Fluent Bit on a VMware Tanzu Kubernetes Grid cluster. VMware Tanzu Mission Control is a centralized management platform for Kubernetes clusters across different environments. It allows users to install Fluent Bit on any attached cluster from the web console or the CLI, and configure the output plugins for log forwarding. Tanzu CLI package plugin is a command-line tool that enables users to interact with VMware Tanzu packages and services. It allows users to install Fluent Bit from a package repository on any standalone management or workload cluster, and configure the output plugins for log forwarding.
References:
Install Fluent Bit for Log Forwarding - VMware Docs, Implement Log Forwarding with Fluent
Bit - VMware Docs

The statement that correctly describes the Cluster API is that it is a specialized toolset to bring declarative, Kubernetes-style APIs to cluster creation, configuration, and management in theKubernetes ecosystem.
Cluster API is a Kubernetes sub-project that provides declarative APIs and tooling to simplify provisioning, upgrading, and operating multiple Kubernetes clusters 5. Cluster API uses a set of custom resource definitions (CRDs) to represent clusters, machines, and other objects. Cluster API also relies on providers to implement the logic for interacting with different infrastructure platforms 5.
References:
Introduction - The Cluster API Book

The Kubernetes project that vSphere with Tanzu Supervisor Cluster uses to automate the lifecycle management of Tanzu Kubernetes Grid Clusters is Cluster API. Cluster API is a Kubernetes project that provides declarative APIs for cluster creation, configuration, and management. Cluster API uses a set of custom resource definitions (CRDs) to represent clusters, machines, and other objects. Cluster API also relies on providers to implement the logic for interacting with different infrastructure platforms 5. vSphere with Tanzu Supervisor Cluster uses Cluster API to deploy and manage Kubernetes clusters on vSphere 7 across multiple vCenter Server instances and/or multiple data centers via Tanzu Mission Control6.
References:
Taking Kubernetes to the People: How Cluster API Promotes Self ... - VMware, kubernetes-
sigs/cluster-api - GitHub

The Scheduler is the Kubernetes component that is responsible for workload creation. The Scheduler is responsible for assigning pods to nodes based on various factors, such as resource availability, node affinity, taints and tolerations, and pod priority. The Scheduler watches for newly created pods that have no node assigned, and selects a suitable node for them to run on. The Scheduler then informs the API server of its decision, and the API server binds the pod to the node.
References:
Scheduling | Kubernetes,
Kubernetes Components | Kubernetes

A Container Storage Interface (CSI) in VMware Tanzu Kubernetes Grid is a plug-in that allows providers to expose storage as persistent storage for Kubernetes clusters. CSI is a standard interface that defines an abstraction layer for container orchestrators to work with storageproviders 3. VMware Tanzu Kubernetes Grid supports StorageClass objects for different storage types, provisioned by Kubernetes internal ("in-tree") or external ("out-of-tree") plug-ins. Two of the supported storage types are vSphere Cloud Native Storage (CNS) and Amazon EBS, which use the vSphere CSI driver and the AWS EBS CSI driver respectively 4.
References:
Tanzu Kubernetes Storage Class Example - VMware Docs, Deploying and Managing Cloud Native Storage (CNS) on vSphere - VMware Docs

The command that can be used to upgrade a VMware Tanzu Kubernetes Cluster that is managed by VMware Tanzu Mission Control is tmc cluster upgrade [version] <clustername>. This command allows you to upgrade a managed cluster to a newer version of Kubernetes that is supported by Tanzu Mission Control5. The version flag is optional and specifies the target version of Kubernetes. If not specified, the command upgrades the cluster to the latest available version 5. The clustername argument is required and specifies the name of the cluster to upgrade 5.
References:
Upgrade Kubernetes on Your Cluster - VMware Docs

A VM class in VMware vSphere with Tanzu specifies the CPU, memory, and resource reservations for a VM10. vSphere with Tanzu offers several preconfigured VM classes which you can use as is, edit, or delete. You can also create custom VM classes in your vCenter Server instance and it will be available to all Supervisor Clusters and the namespaces created in these clusters 11.
When you create or edit a VM class, you can configure the following attributes: Name: A unique DNS compliant name that identifies the VM class. vCPU Count: The number of virtual CPUs (vCPUs) for a VM. This is a VM hardware configuration.
CPU Resource Reservation: The guaranteed minimum CPU resource allocation for a VM. This value is expressed in percentage (%). Memory: The memory configured for a VM in MB, GB, or TB. This is a VM hardware configuration.
Memory Resource Reservation: The guaranteed minimum memory resource allocation for a VM. This value is expressed in percentage (%). Storage: The storage configured for a VM in MB, GB, or TB. This is a VM hardware configuration.
The other options are incorrect because: Network is not an attribute that can be configured in a VM class. Network configuration is done at the namespace level by using network policies 12. Operating system is not an attribute that can be configured in a VM class. Operating system configuration is done at the image level by using content libraries.
PCI devices are not an attribute that can be configured in a VM class. PCI devices are not supported by vSphere with Tanzu.
References:
VM Classes, Create a Custom VM Class, Network Policies, [Content Libraries]