Debezium GKE Setup

debezium-cm.yaml

apiVersion: v1
kind: ConfigMap
metadata:
  name: debezium
  labels:
    app: debezium
  namespace: debezium
data:
  application.properties: |-
      debezium.sink.type=pubsub
      debezium.sink.pubsub.project.id=acko-poc
      debezium.sink.pubsub.ordering.enabled=true
      debezium.source.connector.class=io.debezium.connector.postgresql.PostgresConnector
      debezium.source.offset.storage.file.filename=data/offsets.dat
      debezium.source.offset.flush.interval.ms=0
      debezium.source.database.hostname=localhost #as we are connecting via Cloud Proxy
      debezium.source.database.port= <Postgres Port> #generally 5432
      debezium.source.database.user= <user created> # in our case - debezium_user 
      debezium.source.database.password=<password while creating new user> #in our case "admin"
      debezium.source.database.dbname=<Database> #OurCase postgres
      debezium.source.database.server.name=<Database Server name> #In Our Case debezium-db
      debezium.source.table.include.list=public.actor #Table which needs to captured
      debezium.source.plugin.name=pgoutput

debezium-service.yaml

apiVersion: v1
kind: Service
metadata:
  name: debezium
  labels:
    name: debezium
  namespace: debezium
spec:
  type: ClusterIP
  ports:
    - port: 8080
      targetPort: 8080
      protocol: TCP
      name: http
  selector:
    name: debezium

debezium-statefulset.yaml

apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: debezium-gke
  labels:
    name: debezium
  namespace: debezium
spec:
  replicas: 1
  serviceName: debezium
  selector:
    matchLabels:
      name: debezium
  template:
    metadata:
      labels:
        name: debezium
        version: v1
    spec:
      serviceAccountName: <Service Name Created while creating Cluster>
      nodeSelector:
        iam.gke.io/gke-metadata-server-enabled: "true"
      containers:
        - name: debezium
          image: debezium/server:1.7.0.Final
          volumeMounts:
            - name: debezium-config-volume
              mountPath: /debezium/conf
            - name: debezium-data-volume
              mountPath: /debezium/data
        - name: cloud-sql-proxy
          image: gcr.io/cloudsql-docker/gce-proxy:1.17
          command:
            - "/cloud_sql_proxy"
            - "-instances=<ConnectionName from CloudSQL Page>=tcp:<Port>"
          securityContext:
            runAsNonRoot: true
      volumes:
        - name: debezium-config-volume
          configMap:
            name: debezium
  volumeClaimTemplates:
    - metadata:
        name: debezium-data-volume
      spec:
        accessModes: [ "ReadWriteOnce" ]
        resources:
          requests:
            storage: 10Gb

Seems to be related to your configuration, Please validate

My PG SQL version is 11, do you think this may be causing the issue ?

And also i just want to ask one more thing in the debezium-statefulset.yaml file at line no-20, which service account do we need to pass? the one which is using by GKE VM's?