apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: kafka
  namespace: kafka
spec:
  selector:
    matchLabels:
      app: kafka
  serviceName: "broker"
  replicas: 1
  updateStrategy:
    type: RollingUpdate
  podManagementPolicy: Parallel
  template:
    metadata:
      labels:
        app: kafka
    spec:
      terminationGracePeriodSeconds: 30
      initContainers:
      - name: init-config
        image: solsson/kafka-initutils@sha256:2cdb90ea514194d541c7b869ac15d2d530ca64889f56e270161fe4e5c3d076ea
        env:
        - name: NODE_NAME
          valueFrom:
            fieldRef:
              fieldPath: spec.nodeName
        - name: POD_NAME
          valueFrom:
            fieldRef:
              fieldPath: metadata.name
        - name: POD_NAMESPACE
          valueFrom:
            fieldRef:
              fieldPath: metadata.namespace
        command: ['/bin/bash', '/etc/kafka-configmap/init.sh']
        volumeMounts:
        - name: configmap
          mountPath: /etc/kafka-configmap
        - name: config
          mountPath: /etc/kafka
        - name: extensions
          mountPath: /opt/kafka/libs/extensions
      containers:
      - name: broker
        image: solsson/kafka:2.1.0@sha256:ac3f06d87d45c7be727863f31e79fbfdcb9c610b51ba9cf03c75a95d602f15e1
        env:
        - name: CLASSPATH
          value: /opt/kafka/libs/extensions/*
        - name: KAFKA_LOG4J_OPTS
          value: -Dlog4j.configuration=file:/etc/kafka/log4j.properties
        - name: JMX_PORT
          value: "5555"
        - name: KAFKA_HEAP_OPTS
          value: -Xms512m -Xmx800m
        ports:
        - name: inside
          containerPort: 9092
        - name: outside
          containerPort: 9094
        - name: jmx
          containerPort: 5555
        command:
        - ./bin/kafka-server-start.sh
        - /etc/kafka/server.properties
        lifecycle:
          preStop:
            exec:
             command: ["sh", "-ce", "kill -s TERM 1; while $(kill -0 1 2>/dev/null); do sleep 1; done"]
        resources:
          requests:
            cpu: 100m
            memory: 100Mi
          limits:
            # This limit was intentionally set low as a reminder that
            # the entire Yolean/kubernetes-kafka is meant to be tweaked
            # before you run production workloads
            memory: 600Mi
        readinessProbe:
          tcpSocket:
            port: 9092
          timeoutSeconds: 1
        volumeMounts:
        - name: config
          mountPath: /etc/kafka
        - name: data
          mountPath: /var/lib/kafka/data
        - name: extensions
          mountPath: /opt/kafka/libs/extensions
      volumes:
      - name: configmap
        configMap:
          name: broker-config
      - name: config
        emptyDir: {}
      - name: extensions
        emptyDir: {}
  volumeClaimTemplates:
  - metadata:
      name: data
    spec:
      accessModes: [ "ReadWriteOnce" ]
      storageClassName: kafka-broker
      resources:
        requests:
          storage: 10Gi
