TPVM Upgrade Workflow States

This topic describes all the upgrade states in a TPVM upgrade workflow.


TPVM Upgrade State	Next State	Case	Description
TPVM Upgrade Workflow Started	Device Validation	Normal Upgrade Node Replacement	Initial start state for the TPVM upgrade workflow.
Device Validation	Success: TPVM Config Validation Failure: TPVM Upgrade Workflow Finished	Normal Upgrade Node Replacement	Ensure that the provided device IP has an associated TPVM configurations in the XCO DB, and the device‘s TPVM IP is one of the XCO peer node IPs.
TPVM Config Validation	-Normal Upgrade: Success: TPVM Upgrade Failure: TPVM Upgrade Workflow Finished -Node Replacement: Success: TPVM Configuration Failure: TPVM Upgrade Workflow Finished	Normal Upgrade Node Replacement	Read TPVM config and operational data from the device and determine if it is a normal TPVM Upgrade or a faulty node replacement. If TPVM config and operational data are present on the device and TPVM IP is one of the XCO peers, then it is a normal TPVM upgrade. If there is no TPVM config present on the device, then it is a node replacement. If TPVM config and operational data are present on the device and TPVM IP does not match one of the XCO peers, then validation for a normal TPVM upgrade was unsuccessful. The Detailed Status column in the tpvm-upgrade show command output shows the nature of the issue and possible remedy.
TPVM Configuration	Success: TPVM Installation Failure: TPVM Upgrade Workflow Finished	Node Replacement	Device running-config is programmed using TPVM config data from XCO DB.
TPVM Installation	Success: XCO Deploy Peer and Rejoin Failure: TPVM Upgrade Workflow Finished	Node Replacement	TPVM install and start is invoked on the device.
TPVM Upgrade	Success: XCO Deploy Peer and Rejoin Failure: TPVM Revert	Normal Upgrade	TPVM upgrade is invoked on the device.
TPVM Revert	Success: TPVM Upgrade Workflow Finished Failure: TPVM Upgrade Workflow Finished	Normal Upgrade	On failure of “Upgrading TPVM” or “Deploying XCO for Rejoin”, the TPVM revert state is invoked to rollback the TPVM upgrade failure.
XCO Deploy Peer and Rejoin	Success: TPVM Upgrade Workflow Finished Failure: TPVM Revert	Normal Upgrade Node Replacement	On active XCO node, re-deploying of XCO on the peer node for rejoin is invoked.
TPVM Upgrade Workflow Finished	N/A	Normal Upgrade Node Replacement	End state for the TPVM upgrade workflow.