| disk_image | Instance disk image | string | true | |
| machine_type | Instance machine type | string | true | |
| name | Instance name | string | true | |
| project_name | The project name used by metadata_startup_script | string | false | |
| ssh_public_key | Public SSH key to be added to authorized_keys | string | true | |
| subnetwork | The name or self_link of the subnetwork to attach this instance network interface to. | string | true | |
| writeConnectionSecretToRef | The secret which the cloud resource connection will be written to | writeConnectionSecretToRef | false | |
| zone | Instance availability zone | string | true | |