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Deploying to Kubernetes

Deploying KrakenD in Kubernetes requires a straightforward configuration.

Create a Dockerfile that includes the configuration of the service. That should be as simple as:

FROM devopsfaith/krakend
COPY krakend.json /etc/krakend/krakend.json

If you use flexible-configuration you might want to add a previous generation of the krakend.json file using a multi-step Docker.

From here you need to create a NodePort and send all the traffic to KrakenD.

Deployment definition YAML

The KrakenD deployment definition, in a file called deployment-definition.yaml:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: krakend-deployment
spec:
  selector:
    matchLabels:
      app: krakend
  replicas: 2
  template:
    metadata:
      labels:
        app: krakend
    spec:
      containers:
      - name: krakend
        image: YOUR-KRAKEND-IMAGE:1.0.0
        ports:
        - containerPort: 8080
        imagePullPolicy: Never
        command: [ "/usr/bin/krakend" ]
        args: [ "run", "-d", "-c", "/etc/krakend/krakend.json", "-p", "8080" ]
        env:
        - name: KRAKEND_PORT
          value: "8080"

Service definition yaml

The KrakenD service definition, in a file called service-definition.yaml:

apiVersion: v1
kind: Service
metadata:
  name: krakend-service
spec:
  type: NodePort
  ports:
  - name: http
    port: 8000
    targetPort: 8080
    protocol: TCP
  selector:
    app: krakend

Registering the service

Using the kubectl command:

Register deployment 
$kubectl create -f deployment-definition.yaml 
Register service 
$kubectl create -f service-definition.yaml 

For a more step by step process see this blog entry.

Helm Chart

For an example of a Helm Chart, see Mikescandy contribution

Unresolved issues?

The documentation is only a piece of the help you can get! Whether you are looking for Open Source or Enterprise support, see more support channels that can help you.

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