I analyze js code in TeamCity and found 2 solution
- Kill build by process id :
yourTeamCityUrl/ajax.html?comment=%somment%&kill=%buildQueueId%&operationKind=2&_readd=&submit=Stop
- Kill build by build id:
yourTeamCityUrl/ajax.html?comment=%comment%&submit=Stop&buildId=%active_build%&kill&operationKind=1
only need to add &operationKind=1