Support for instance templates when creating a new compute engine instance

[gcooney]

Unless I'm misreading the code and docs, it looks like the library doesn't support passing in an instance template when creating a new VM. Any interest in a PR to add it?

[JamesTheTerry]

I would very much like this feature as well.

[stephenplusplus]

Yes, a PR would be great!

[edgarmarkosov]

When this will be available? Is there any other way to create instance from the instance template?

[JamesTheTerry]

@edgarmarkosov Indeed there is! The following example uses a token that can be generated when this code is run within another Compute Instance. It was derived from these docs.

var createInstance = () => {
  const instanceName = 'instance-number-1';
  const zoneString = 'us-central1-c';
  const projectID = 'some-project-id';
  const instanceTemplate = 'secret-x-project';

  return new Promise(resolve => {
    console.log('Creating:', instanceName)
    axios({
      method: 'get',
      url: 'http://metadata.google.internal/computeMetadata/v1/instance/service-accounts/default/token',
      headers: {
        'Metadata-Flavor': 'Google'
      }
    })
    .then(res => {
      const token = res.data.access_token;

      axios({
        method: 'post',
        url: `https://www.googleapis.com/compute/v1/projects/${projectID}/zones/${zoneString}/instances?sourceInstanceTemplate=https://www.googleapis.com/compute/v1/projects/${projectID}/global/instanceTemplates/${instanceTemplate}`,
        headers: {
          'Authorization': `Bearer ${token}`
        },
        data: {
          "name": instanceName
        }
      })
      .then(res => {
        console.log(res)
        console.log('\n\n')
        console.log(res.data)
        console.log(`${instanceName} has been created from the ${instanceTemplate}`)
        resolve(res.data)
      })
      .catch(err => {
        console.log(err)
        reject(err);
      })
    })
    .catch(err => {
      console.log(err)
      reject(err);
    })
  });
}

[stephenplusplus]

This is untested, but I believe you can try just this, where vm is our library's "VM" object:

const projectID = 'some-project-id';
const instanceTemplate = 'secret-x-project';

vm.request({
  method: 'POST',
  uri: '',
  qs: {
    sourceInstanceTemplate: `https://www.googleapis.com/compute/v1/projects/${projectID}/global/instanceTemplates/${instanceTemplate}`
  },
  json: {
    name: instanceName,
  }
}, (err, resp) => {
  // ...
});

[Alw3ys]

Any updates, will this ever be implemented?