server-deployer

Server Deployer Pipeline

Prepares a PVC from Fedora Cloud URL source and installs additional dependencies with virt-customize. Then it creates a VM from this PVC and deploys a flaskr server application in this VM.

Prerequisites

• KubeVirt v0.36.0
• Tekton Pipelines v0.11.0

Pipeline Description

  modify-data-object --- disk-virt-customize --- create-vm-from-manifest --- execute-in-vm
                                                           |
                                         generate-ssh-keys--

1. modify-data-object task imports a PVC from Fedora Cloud URL source. The name of the PVC is generated.
2. disk-virt-customize task runs virt-customize commands on the PVC that install git, vim, pip and flask python framework.
3. generate-ssh-keys task generates two secrets with private and public keys. The name of the secrets are generated. The task itself runs in parallel with 1. and 2. tasks.
4. create-vm-from-manifest task creates a VM called flasker-vm-* from the prepared PVC with a public key attached.
5. execute-in-vm task starts a VM and makes SSH connection to it.
   • clones flask repository
   • initializes flaskr application
   • deploys the server on port 5000

How to run

kubectl apply -f server-deployer-pipeline.yaml
kubectl create -f server-deployer-pipelinerun.yaml

Interact with the deployed app

To expose and interact with the deployed application run the following snippet and visit http://localhost:8001/api/v1/namespaces/${VM_NAMESPACE}/services/flaskr/proxy/.

VM name and namespace can be found in the PipelineRun's results once it has finished.

virtctl expose vm ${VM_NAME} --name=flaskr --port 5000
kubectl proxy -p 8001