graph LR
    style ucloud fill:#FFD2FC
    style cron fill:#FFF696
    style infrastructure fill:#BDF0FF
    subgraph ucloud[ucloud]
        ucloud-cli[CLI]-->ucloud-api[API]
        ucloud-api-->ucloud-scheduler[Scheduler]
        ucloud-api-->ucloud-imagescanner[Image Scanner]
        ucloud-api-->ucloud-host[Host]
        ucloud-scheduler-->ucloud-host

        ucloud-host-->need-networking{VM need Networking}
        need-networking-->|Yes| networking-scripts
        need-networking-->|No| VM[Virtual Machine]
        need-networking-->|SLAAC?| radvd
        networking-scripts-->VM
        networking-scripts--Create Networks Devices-->networking-scripts
        subgraph cron[Cron Jobs]
            ucloud-imagescanner
            ucloud-filescanner[File Scanner]
            ucloud-filescanner--Track User files-->ucloud-filescanner
        end
 subgraph infrastructure[Infrastructure]
    radvd
    etcd
    networking-scripts[Networking Scripts]
    ucloud-imagescanner-->image-store
    image-store{Image Store}
    image-store-->|CEPH| ceph
    image-store-->|FILE| file-system
    ceph[CEPH]
    file-system[File System]
    end
subgraph virtual-machine[Virtual Machine]
  VM
  VM-->ucloud-init

end

subgraph metadata-group[Metadata Server]
metadata-->ucloud-init
ucloud-init<-->metadata
end
end