Lab Optional - Use kubectl to view vK8s Output

F5 Distributed Cloud App Stack provides the ability to manage your vK8s namespace via command line with kubectl

In this lab, we will learn perform the following:

  • Review kubectl commands and see the output

Core Concepts

Virtual Kubernetes vK8s
F5 Distributed Cloud Services support a Kubernetes compatible API for centralized orchestration of applications across a fleet of sites (customer sites or F5 Distributed Cloud Regional Edge). This API is “Kubernetes compatible” because not all Kubernetes APIs or resources are supported. However, for the API(s) that are supported, it is hundred percent compatible. We have implemented a distributed control plane within our global infrastructure to manage scheduling and scaling of applications across multiple (tens to hundreds of thousands of) sites, where each site in itself is also a managed physical K8s cluster.
Standard upstream kubectl CLI tool can be used on the vK8s API URL or the downloaded kubeconfig file can be used to access the vK8s APIs.

For more core concepts, please review F5 Distributed Cloud documentation

Commands to run via cli to Access Virtual K8s

Run the following commands and view the outputs. Why are there different outputs before and after increasing the replicas?
View Nodes

kubectl get nodes

kubectl get nodes -o wide

View pods

kubectl get pods

kubectl get pods -o wide

kubectl describe pod <podname>

View deployment and service

kubectl get deployment <user>-workload

kubectl get svc <user>-workload

View all resources in your namespace
kubectl get all
View output of the pod in yaml format
kubectl get pods <podname> -o yaml
View output of the deployment in yaml format
kubectl get deployment <user>-workload -o yaml
View output of the service in yaml format
kubectl get svc <user>-workload -o yaml
Save the output of the deployment in yaml format
kubectl get deployment <username>-workload -o yaml > agility.yaml
View the saved yaml deployment

find the file in the current directory: ls -larth

view the file: cat agility.yaml