The cloud-provider-gcp module is responsible for interacting with the Google cloud resources. It allows the node manager module to use GCP resources for provisioning nodes for the specified node group (a group of nodes that are acted upon as if they were a single entity).

The cloud-provider-gcp module:

  • Manages GCP resources using the cloud-controller-manager (CCM) module:
    • The CCM module creates network routes for the PodNetwork network on the GCP side;
    • The CCM module creates LoadBalancers for Kubernetes Service objects that have the LoadBalancer type;
    • The CCM module updates the metadata of the cluster nodes according to the configuration parameters and deletes nodes that are no longer in GCP;
  • Provisions disks in GCP using the CSI storage component;
  • Enables the necessary CNI plugin (using the simple bridge);
  • Registers with the node-manager module so that GCPInstanceClasses can be used when creating the NodeGroup.