VMware 5V0-23.20 - VMware vSphere with Tanzu Specialist

Tanzu Kubernetes Cluster is a Kubernetes cluster deployed by developers using a YAML specification file. It uses resources from hosts across vSphere clusters to form a Kubernetes cluster on vSphere. It also enables vSphere High Availability and Distributed Resource Scheduler, which allows for load balancing and high availability of resources in the cluster. It does not remove the Kubernetes API for use by DevOps teams.

For some parts of your application (for example, frontends) you may want to expose a Service onto an external IP address, that's outside of your cluster.

Kubernetes ServiceTypes allow you to specify what kind of Service you want. The default is ClusterIP.

https://docs.vmware.com/en/VMware-vSphere/7.0/vmware-vsphere-with-tanzu/GUID-1238AFD8-232C-4EFC-BD54-796CB9F8C45F.html

Resource Name Description

configmaps The total number of ConfigMaps that can exist in the namespace.

persistentvolumeclaims The total number of PersistentVolumeClaims that can exist in the namespace.

pods The total number of Pods in a non-terminal state that can exist in the namespace. A pod is in a terminal state if .status.phase in (Failed, Succeeded) is true.

replicationcontrollers The total number of ReplicationControllers that can exist in the namespace.

resourcequotas The total number of ResourceQuotas that can exist in the namespace.

services The total number of Services that can exist in the namespace.

services.loadbalancers The total number of Services of type LoadBalancer that can exist in the namespace.

services.nodeports The total number of Services of type NodePort that can exist in the namespace.

secrets The total number of Secrets that can exist in the namespace.

The Cloud Native Storage server resides in vCenter Server:

• Provisions and manages life cycle operations for container volumes

• Creates First Class Disks (FCDs) to support the container volumes

• First Class Disks exist as .vmdk and -flat.vmdk files on a vSphere datastore •

Integrates with storage policy based management (SPBM) for the placement of disks

A First Class Disk (FCD) is also called an improved virtual disk. It is a named virtual disk that is unassociated with a VM. These disks reside on a VMFS, NFS, or vSAN datastore and support container volumes.

Storage policy based management (SPBM) is a vCenter Server service that supports provisioning of persistent volumes according to specified storage requirements. After provisioning, the service monitors compliance of the volume with the required policy characteristics.

https://docs.docker.com/docker-hub/repos/

Graphical user interface, text, application Description automatically generated

• Registry Service: Developers can store and manage Docker and OCI images using Harbor. Harbor is an open-source container image registry that secures images with role-based access control.

Procedure

Login to Harbor Registry with the vSphere Docker Credential Helper.

docker-credential-vsphere login --user username@domain.com

Note:While providing --user username is acceptable for login, you should use the UserPrincipalName (UPN) syntax ( --user username@domain.com) to login and use docker push commands.

Tag the image that you want to push to the project in Harbor Registry with same name as the namespace, where you want to use it:

docker tag [:TAG] //[:TAG]

For example:

docker tag hello-world:latest 10.179.145.77/tkgs-cluster-ns/hello-world:latest

docker images

REPOSITORY TAG IMAGE ID CREATED SIZE

10.179.145.77/tkgs-cluster-ns/hello-world latest bf756fb1ae65 10 months ago 13.3kB

hello-world latest bf756fb1ae65 10 months ago 13.3kB

To push an image to a project in Harbor, run the following command:Syntax:

docker push //

For example:

docker push 10.179.145.77/tkgs-cluster-ns/hello-world:latest

Expected result.

The push refers to repository [10.179.145.77/tkgs-cluster-ns/hello-world]

9c27e219663c: Pushed

latest: digest: sha256:90659bf80b44ce6be8234e6ff90a1ac34acbeb826903b02cfa0da11c82cbc042 size: 525