@POST
  @Path("{hostName}")
  @Produces("text/plain")
  @ApiOperation(value = "Creates a host")
  @ApiImplicitParams({
    @ApiImplicitParam(dataType = HOST_REQUEST_TYPE, paramType = PARAM_TYPE_BODY)
  })
  @ApiResponses({
    @ApiResponse(code = HttpStatus.SC_CREATED, message = MSG_SUCCESSFUL_OPERATION),
    @ApiResponse(code = HttpStatus.SC_ACCEPTED, message = MSG_REQUEST_ACCEPTED),
    @ApiResponse(code = HttpStatus.SC_BAD_REQUEST, message = MSG_INVALID_ARGUMENTS),
    @ApiResponse(code = HttpStatus.SC_NOT_FOUND, message = MSG_CLUSTER_NOT_FOUND),
    @ApiResponse(code = HttpStatus.SC_CONFLICT, message = HOST_ALREADY_EXISTS),
    @ApiResponse(code = HttpStatus.SC_UNAUTHORIZED, message = MSG_NOT_AUTHENTICATED),
    @ApiResponse(code = HttpStatus.SC_FORBIDDEN, message = MSG_PERMISSION_DENIED),
    @ApiResponse(code = HttpStatus.SC_INTERNAL_SERVER_ERROR, message = MSG_SERVER_ERROR),
  })
  public Response createHost(String body, @Context HttpHeaders headers, @Context UriInfo ui,
    @ApiParam(value = "host name", required = true) @PathParam("hostName") String hostName
  ) {
    return handleRequest(headers, body, ui, Request.Type.POST,
        createHostResource(m_clusterName, hostName));
  }
Handles POST /clusters/{clusterID}/hosts/{hostID}
Create a specific host.

@param body     http body
@param headers  http headers
@param ui       uri info
@param hostName host name

@return host resource representation
ambari-server/src/main/java/org/apache/ambari/server/api/services/HostService.java