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Deploying to Kubernetes

Document updated on Dec 11, 2021

Deploying KrakenD in Kubernetes requires a straightforward configuration.

Create a Dockerfile that includes the configuration of the service. Read how to generate a Docker artifact for detailed instructions. You could also use a ConfigMap, although the recommendation is to use immutable artifacts.

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

Run as user 1000
Whether you run KrakenD on Kubernetes, OpenShift, or any other platform with the capability to run the container as a specific user UID, make sure you use the UID 1000

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" ]
        securityContext:
          allowPrivilegeEscalation: false
          runAsNonRoot: true
          runAsUser: 1000
          readOnlyRootFilesystem: true
          capabilities:
            drop:
              - ALL
            add:
              - NET_BIND_SERVICE
        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

There is no official Helm chart for KrakenD. However, there is a Helm chart here tracking Krakend releases maintained by Equinix Metal.

Scarf

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.