kubernetes-create-deployment.js

// npm i @kubernetes/client-node

const Extensions_v1beta1Api = require('@kubernetes/client-node/dist/api').Extensions_v1beta1Api;

const ENDPOINT = 'https://x.x.x.x'; //  (IP CAN BE FOUND FROM RESPONSE OF GKE getCluster API)
const USERNAME = 'admin'; // (THIS CAN BE FOUND FROM RESPONSE OF GKE getCluster API)
const PASSWORD = ''; // THIS CAN BE FOUND FROM RESPONSE OF GKE getCluster API
const BASE64_ENCODED_CA = ''; // THIS CAN BE FOUND FROM RESPONSE OF GKE getCluster API
const BASE64_ENCODED_CERT = ''; // THIS CAN BE FOUND FROM RESPONSE OF GKE getCluster API

function nginxDeployment() {
  return {
    metadata: {
      name: 'nginx-deployment',
      labels: {
        app: 'nginx'
      }
    },
    spec: {
      replicas: 2,
      selector: {
        matchLabels: {
          app: 'nginx'
        }
      },
      template: {
        metadata: {
          labels: {
            app: 'nginx'
          }
        },
        spec: {
          containers: [
            {
              name: 'nginx',
              image: 'nginx:1.7.9',
              ports: [
                {
                  containerPort: 80
                }
              ]
            }
          ]
        }
      }
    }
  };
}

(async () => {
  // since the underneath http client is request, check https://github.com/request/request#tlsssl-protocol for more information.
  const authentication = {
    'applyToRequest': (opts) => {
      opts.auth = {
        username: USERNAME, password: PASSWORD
      };
      opts.ca = Buffer.from(BASE64_ENCODED_CA, 'base64');
      opts.key = Buffer.from(BASE64_ENCODED_CERT, 'base64');
    }
  };
  
  const extensionsV1beta1Api = new Extensions_v1beta1Api(ENDPOINT)
  extensionsV1beta1Api.setDefaultAuthentication(authentication);

  const createDeploymentRes = await extensionsV1beta1Api.createNamespacedDeployment('default', nginxDeployment())
  console.log(createDeploymentRes.response.body);  
})()