The Replica Pool API allows users to declaratively provision and manage groups of Google Compute Engine instances based on a common template.
curl \
-H "Authorization: Bearer $ACCESS_TOKEN" \
https://www.googleapis.com/replicapool/v1beta1/projects/{projectName}/zones/{zone}/poolscurl \
-H "Authorization: Bearer $ACCESS_TOKEN" \
https://www.googleapis.com/replicapool/v1beta1/projects/{projectName}/zones/{zone}/pools/{poolName}curl \
-H "Authorization: Bearer $ACCESS_TOKEN" \
https://www.googleapis.com/replicapool/v1beta1/projects/{projectName}/zones/{zone}/pools/{poolName}/replicas