Developer guide

Operator SDK

Prerequisites

NiFiKop has been validated with :

• go version v1.15+.
• docker version 18.09+
• kubectl version v1.16+
• Helm version v3.4.2
• Operator sdk version v1.3.0

Initial setup

Checkout the project.

git clone https://github.com/Orange-OpenSource/nifikop.git

cd nifikop

Operator sdk

The full list of command is available here : https://sdk.operatorframework.io/docs/upgrading-sdk-version/v1.0.0/#cli-changes

Build NiFiKop

Local environment

If you prefer working directly with your local go environment you can simply uses :

make build

Run NiFiKop

We can quickly run NiFiKop in development mode (on your local host), then it will use your kubectl configuration file to connect to your kubernetes cluster.

There are several ways to execute your operator :

• Using your IDE directly
• Executing directly the Go binary
• deploying using the Helm charts

If you want to configure your development IDE, you need to give it environment variables so that it will uses to connect to kubernetes.

KUBECONFIG={path/to/your/kubeconfig}

WATCH_NAMESPACE={namespace_to_watch}

POD_NAME={name for operator pod}

LOG_LEVEL=Debug

OPERATOR_NAME=ide

Run the Operator Locally with the Go Binary

This method can be used to run the operator locally outside of the cluster. This method may be preferred during development as it facilitates faster deployment and testing.

Set the name of the operator in an environment variable

export OPERATOR_NAME=nifi-operator

Deploy the CRDs.

kubectl apply -f config/crd/bases/nifi.orange.com_nificlusters.yaml

kubectl apply -f config/crd/bases/nifi.orange.com_nifidataflows.yaml

kubectl apply -f config/crd/bases/nifi.orange.com_nifiparametercontexts.yaml

kubectl apply -f config/crd/bases/nifi.orange.com_nifiregistryclients.yaml

kubectl apply -f config/crd/bases/nifi.orange.com_nifiusers.yaml

And deploy the operator.

make run

This will run the operator in the default namespace using the default Kubernetes config file at $HOME/.kube/config.

Deploy using the Helm Charts

This section provides an instructions for running the operator Helm charts with an image that is built from the local branch.

Build the image from the current branch.

export DOCKER_REPO_BASE={your-docker-repo}

make docker-build

Push the image to docker hub (or to whichever repo you want to use)

$ make docker-push

info

The image tag is a combination of the version as defined in verion/version.go and the branch name.

Install the Helm chart.

helm install skeleton ./helm/nifikop \

--set image.tag=v0.4.3-release \

--namespace-{"nifikop"}

important

The image.repository and image.tag template variables have to match the names from the image that we pushed in the previous step.

info

We set the chart name to the branch, but it can be anything.

Lastly, verify that the operator is running.

$ kubectl get pods -n nifikop

NAME READY STATUS RESTARTS AGE

skeleton-nifikop-8946b89dc-4cfs9 1/1 Running 0 7m45s

Helm

The NiFiKop operator is released in the orange-incubator helm repository.

In order to package the chart you need to run the following command.

make helm-package