Deploy Podinfo

Podinfo is a microservice to demonstrate best practices of running a microservice in a Kubernetes cluster. In this chapter Podinfo is used a deployment unit and deployed with FluxV2 kustomization controller.

Prerequisites

  • FluxV2 installed in a Kubernetes cluster
  • A septate configuration git repository, the repository from the installation section is sufficient

Adding Git repository as flux source

First, the flux configuration repository must be cloned to the local computer.

git clone git@github.com:zonedbit/flux-conf-playground.git

git checkout flux-conf

cd flux-conf-playground

In the next step a CRD is created, this is a representing the git repository which should be deployed to Kubernetes cluster.

flux create source git podinfo \
  --url=https://github.com/stefanprodan/podinfo \
  --branch=master \
  --interval=30s \
  --export > ./clusters/green/podinfo-source.yaml

After running this command a CRD is created, and can be pushed to the git repository.

git add -A && git commit -m "Add podinfo GitRepository"
git push

A moment later the git repository should appear as a new CRD and pointing to the GitHub repository of Podinfo

kubectl get gitrepositories.source.toolkit.fluxcd.io --all-namespaces

NAMESPACE     NAME          URL                                                      READY   STATUS                                                                 AGE
flux-system   podinfo       https://github.com/stefanprodan/podinfo                  True    Fetched revision: master/627d5c4bb67b77185f37e31d734b085019ff2951      51m
flux-system   flux-system   ssh://git@github.com/zonedbit/flux-conf-playground.git   True    Fetched revision: flux-conf/70d9f421bb9347101c52dd20580fcbeddd2a218a   65m

Deploy Podinfo via kustomization

Now the Podinfo microservie will be deployed to the Kubernetes cluster. Therefor the flux cli is used to create a kustomization CRD. Pushing the Podinfo kustomization CRD to the git repository, leads to the deployment of the Podinfo microservice.

flux create kustomization podinfo \
  --source=podinfo \
  --path="./kustomize" \
  --prune=true \
  --validation=client \
  --interval=5m \
  --export > ./clusters/green/podinfo-kustomization.yaml

git add -A && git commit -m "Add podinfo Kustomization"
git push

By creating a port-forward it is possible to access Podinfo in a Browser via http://127.0.0.1:8080

kubectl port-forward service/podinfo 8080:9898

URLs