<p>I'm trying to create kubernetes cluster on google cloud platform through python (3.7) using google-cloud-container module.</p>

<p>Created kubernetes cluster through google cloud platform and was able to successfully retrieve details for that cluster using google-cloud container (python module). </p>

<p>I'm trying now to create kubernetes cluster through this module. I created a JSON file with required key values and passed it as parameter, but i'm getting errors. Would appreciate if provided a sample code for creating kubernetes cluster in google cloud platform. Thank you in advance. </p>

<pre class="lang-py prettyprint-override"><code>from google.oauth2 import service_account
from google.cloud import container_v1



class GoogleCloudKubernetesClient(object):

    def __init__(self, file, project_id, project_name, zone, cluster_id):
        credentials = service_account.Credentials.from_service_account_file(
            filename=file)
        self.client = container_v1.ClusterManagerClient(credentials=credentials)
        self.project_id = project_id
        self.zone = zone

    def create_cluster(self, cluster):
        print(cluster)
        response = self.client.create_cluster(self.project_id, self.zone, cluster=cluster)
        print(f"response for cluster creation: {response}")


def main():
    cluster_data = {
            "name": "test_cluster",
            "masterAuth": {
                "username": "admin",
                "clientCertificateConfig": {
                    "issueClientCertificate": True
                }
            },
            "loggingService": "logging.googleapis.com",
            "monitoringService": "monitoring.googleapis.com",
            "network": "projects/abhinav-215/global/networks/default",
            "addonsConfig": {
                "httpLoadBalancing": {},
                "horizontalPodAutoscaling": {},
                "kubernetesDashboard": {
                    "disabled": True
                },
                "istioConfig": {
                    "disabled": True
                }
            },
            "subnetwork": "projects/abhinav-215/regions/us-west1/subnetworks/default",
            "nodePools": [
                {
                    "name": "test-pool",
                    "config": {
                        "machineType": "n1-standard-1",
                        "diskSizeGb": 100,
                        "oauthScopes": [
                            "https://www.googleapis.com/auth/cloud-platform"
                        ],
                        "imageType": "COS",
                        "labels": {
                            "App": "web"
                        },
                        "serviceAccount": "abhinav@abhinav-215.iam.gserviceaccount.com",
                        "diskType": "pd-standard"
                    },
                    "initialNodeCount": 3,
                    "autoscaling": {},
                    "management": {
                        "autoUpgrade": True,
                        "autoRepair": True
                    },
                    "version": "1.11.8-gke.6"
                }
            ],
            "locations": [
                "us-west1-a",
                "us-west1-b",
                "us-west1-c"
            ],
            "resourceLabels": {
                "stage": "dev"
            },
            "networkPolicy": {},
            "ipAllocationPolicy": {},
            "masterAuthorizedNetworksConfig": {},
            "maintenancePolicy": {
                "window": {
                    "dailyMaintenanceWindow": {
                        "startTime": "02:00"
                    }
                }
            },
            "privateClusterConfig": {},
            "databaseEncryption": {
                "state": "DECRYPTED"
            },
            "initialClusterVersion": "1.11.8-gke.6",
            "location": "us-west1-a"
        }


    kube = GoogleCloudKubernetesClient(file='/opt/key.json', project_id='abhinav-215', zone='us-west1-a')

    kube.create_cluster(cluster_data)


if __name__ == '__main__':
    main()

Actual Output:
Traceback (most recent call last):
  File "/opt/matilda_linux/matilda_linux_logtest/matilda_discovery/matilda_discovery/test/google_auth.py", line 118, in &lt;module&gt;
    main()
  File "/opt/matilda_linux/matilda_linux_logtest/matilda_discovery/matilda_discovery/test/google_auth.py", line 113, in main
    kube.create_cluster(cluster_data)
  File "/opt/matilda_linux/matilda_linux_logtest/matilda_discovery/matilda_discovery/test/google_auth.py", line 31, in create_cluster
    response = self.client.create_cluster(self.project_id, self.zone, cluster=cluster)
  File "/opt/matilda_discovery/venv/lib/python3.6/site-packages/google/cloud/container_v1/gapic/cluster_manager_client.py", line 407, in create_cluster
    project_id=project_id, zone=zone, cluster=cluster, parent=parent
ValueError: Protocol message Cluster has no "masterAuth" field.
</code></pre>

Abhinav 
<p>Kind of late answer, but I had the same problem and figured it out. Worth writing for future viewers.</p>
<p>You should not write the field names in the cluster_data as they appear in the <a href="https://cloud.google.com/kubernetes-engine/docs/reference/rest/v1/projects.zones.clusters" rel="nofollow noreferrer">REST API</a>.
Instead you should translate them to how they would look by python convention, with words separated by underline instead of camelcase.
Thus, instead of writing masterAuth, you should write master_auth. You should make similar changes to the rest of your fields, and then the script should work.</p>
<p>P.S you aren't using the project_name and cluster_id params in GoogleCloudKubernetesClient.<strong>init</strong>. Not sure what they are, but you should probably remove them.</p>
