mapi-deploy.uml

@startuml
actor User
participant "machine API" as MAPI #yellow
participant "baremetal-operator" as BMO #green
participant ironic as Ironic #red
participant "ironic-python-agent" as IPA #red
entity Machine

User->MAPI: Scale up MachineSet
MAPI->BMO: Find available BareMetalHost
MAPI->BMO: Populate CustomDeploy & UserData
BMO->Ironic: Set RootDeviceHints
BMO->Ironic: Start automated cleaning (if needed)
IPA->Ironic: Heartbeat
Ironic->IPA: Get available clean steps
Ironic->IPA: Run step erase_devices_metadata
IPA->Machine: Erase partition tables asynchronously
IPA->Ironic: Heartbeat
Ironic->IPA: Get asynchronous step result
Ironic->BMO: Node is available
BMO->BMO: Check if RAID needs to be built
BMO->BMO: Check if firmware settings have changed
BMO->BMO: Check if firmware updates are needed
BMO->Ironic: Deploy with custom step install_coreos
IPA->Ironic: Heartbeat
Ironic->IPA: Get available deploy steps
Ironic->IPA: Execute install_coreos with given UserData
IPA->Machine: Detect root device from RootDeviceHints
IPA->Machine: Invoke coreos-installer with ignition from UserData
IPA->Machine: Configure boot using efibootmgr
IPA->Ironic: Heartbeat
Ironic->IPA: Get asynchronous step result
Ironic->Machine: Deconfigure IPA ramdisk
Ironic->Machine: Reboot into CoreOS
Ironic->BMO: Node is active
BMO->MAPI: Host is provisioned
MAPI->MAPI: Continues with provisioning
@enduml