I have a Kubernetes project with several applications running in pods, PostgresSQL DB running in Google CloudSQL. Following this manual I've made all things and stopped on the Step 6. I've crated Deployment configuration for proxy rules, deployed it to the Kubernetes project, but this pod doesn't start. I can't find where I've went wrong.

Here is my configuration:

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: postgres-proxy
labels:
  app: postgres-proxy
spec:
template:
  metadata:
    labels:
      app: postgres-proxy
  spec:
    containers:
      - name: app
        image: postgres-rules
        ports:
          - containerPort: 80
      # The following environment variables will contain the database host,
      # user and password to connect to the PostgreSQL instance.
      env:
        - name: POSTGRES_DB_HOST
          value: 127.0.0.1:5432
        # [START cloudsql_secrets]
        - name: POSTGRES_DB_USER
          valueFrom:
            secretKeyRef:
              name: cloudsql-db-credentials
              key: username
        - name: POSTGRES_DB_PASSWORD
          valueFrom:
            secretKeyRef:
              name: cloudsql-db-credentials
              key: password
        # [END cloudsql_secrets]
    # Change <INSTANCE_CONNECTION_NAME> here to include your GCP
    # project, the region of your Cloud SQL instance and the name
    # of your Cloud SQL instance. The format is
    # $PROJECT:$REGION:$INSTANCE
    # [START proxy_container]
    - name: cloudsql-proxy
      image: gcr.io/cloudsql-docker/gce-proxy:1.11
      command: ["/cloud_sql_proxy",
                "-instances=pr-business-kubernetes:us-west1:postgresql-data1=tcp:5432",
                "-credential_file=/secrets/cloudsql/credentials.json"]
      volumeMounts:
        - name: cloudsql-instance-credentials
          mountPath: /secrets/cloudsql
          readOnly: true
    # [END proxy_container]
  # [START volumes]
  volumes:
    - name: cloudsql-instance-credentials
      secret:
        secretName: cloudsql-instance-credentials
  # [END volumes]

And all that I see in the end is:

Any help, please)