wasm-pong/k8s-deployment.yml

---
# TODO: Breaks if the pong-server is restarted => 499
# https://serverfault.com/questions/833466/nginx-failing-once-a-week-responds-with-499-until-nignx-reload
apiVersion: v1
kind: Service
metadata:
  name: nginx-service
spec:
  selector:
    wasm.pong.io/name: nginx
  type: LoadBalancer
  ports:
    - name: nginx-port
      protocol: TCP
      port: 80
      targetPort: http-svc
    - name: nginx-sec-port
      protocol: TCP
      port: 443
      targetPort: https-svc
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
  labels:
    wasm.pong.io/name: nginx
spec:
  replicas: 3
  selector:
    matchLabels:
      wasm.pong.io/name: nginx
  template:
    metadata:
      name: nginx
      labels:
        wasm.pong.io/name: nginx
    spec:
      containers:
        - name: client
          image: docker-registry:443/wasm-pong/nginx
          env:
            - name: API_SERVER
              value: pong-server-service
          ports:
            - containerPort: 80
              name: http-svc
            - containerPort: 443
              name: https-svc
---
apiVersion: v1
kind: Service
metadata:
  name: kafka-zookeeper-service
spec:
  selector:
    wasm.pong.io/name: kafka-zookeeper
  ports:
    - name: kafka-zookeeper-service-port
      protocol: TCP
      port: 2181
      targetPort: zookeeper-svc
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: kafka-zookeeper-deployment
  labels:
    wasm.pong.io/name: kafka-zookeeper
spec:
  replicas: 3
  selector:
    matchLabels:
      wasm.pong.io/name: kafka-zookeeper
  template:
    metadata:
      name: kafka-zookeeper
      labels:
        wasm.pong.io/name: kafka-zookeeper
    spec:
      containers:
      - name: kafka-zookeeper
        image: bitnami/zookeeper:latest
        env:
        - name: ALLOW_ANONYMOUS_LOGIN
          value: "yes"
        ports:
        - containerPort: 2181
          name: zookeeper-svc
---
apiVersion: v1
kind: Service
metadata:
  name: kafka-service
spec:
  selector:
    wasm.pong.io/name: kafka
  ports:
    - name: kafka-service-port
      protocol: TCP
      port: 9092
      targetPort: bootstrap-svc
    - name: kafka-topic-service-port
      protocol: TCP
      port: 7243
      targetPort: topic-svc
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: kafka-deployment
  labels:
    wasm.pong.io/name: kafka
spec:
  replicas: 3
  selector:
    matchLabels:
      wasm.pong.io/name: kafka
  template:
    metadata:
      labels:
        wasm.pong.io/name: kafka
    spec:
      containers:
      - name: kafka
        image: docker-registry:443/wasm-pong/kafka
        ports:
        - containerPort: 9092
          name: bootstrap-svc
        - containerPort: 7243
          name: topic-svc
        env:
        - name: KAFKA_CFG_INTER_BROKER_LISTENER_NAME
          # TODO: This will not work with multiple replicas
          value: LOCAL
        - name: KAFKA_CFG_LISTENERS
          value: LOCAL://localhost:9093,K8S://:9092
        - name: KAFKA_CFG_ADVERTISED_LISTENERS
          value: LOCAL://localhost:9093,K8S://kafka-service:9092
        - name: KAFKA_CFG_LISTENER_SECURITY_PROTOCOL_MAP
          value: LOCAL:PLAINTEXT,K8S:PLAINTEXT
        - name: KAFKA_CFG_ZOOKEEPER_CONNECT
          value: kafka-zookeeper-service:2181
        - name: ALLOW_PLAINTEXT_LISTENER
          value: "yes"
        livenessProbe:
          exec:
            command:
            - "/opt/bitnami/kafka/bin/kafka-topics.sh"
            - "--bootstrap-server localhost:9093"
            - "--describe"
          initialDelaySeconds: 10
          periodSeconds: 30
---
apiVersion: v1
kind: Service
metadata:
  name: pong-server-service
spec:
  selector:
    wasm.pong.io/name: pong-server
  ports:
    - name: pong-server-port
      protocol: TCP
      port: 4000
      targetPort: http-svc
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: pong-server-deployment
  labels:
    wasm.pong.io/name: pong-server
spec:
  replicas: 1
  selector:
    matchLabels:
      wasm.pong.io/name: pong-server
  template:
    metadata:
      labels:
        wasm.pong.io/name: pong-server
    spec:
    # https://stackoverflow.com/a/53852500/14388607
      initContainers:
      - name: wait-for-kafka
        image: darthcabs/tiny-tools:1
        args:
        - /bin/bash
        - -c
        - >
          set -x;
          while [[ "$(curl -s -o /dev/null -w ''%{http_code}'' http://kafka-service:7243/health_check)" != "200" ]]; do 
            echo '.'
            sleep 15;
          done
      containers:
      - name: client
        image: docker-registry:443/wasm-pong/pong-server
        env:
        - name: KAFKA_HOST
          value: 'kafka-service:9092'
        - name: KAFKA_TOPIC_MANAGER_HOST
          value: 'kafka-service:7243'
        - name: RUST_BACKTRACE
          value: '1'
        ports:
        - containerPort: 4000
          name: http-svc
---