@RequestMapping(method = {RequestMethod.GET, RequestMethod.HEAD}, value = "/ping")
  @Operation(summary = "Check Rest service status ",
      description = "Check whether gemfire REST service is up and running!")
  @ApiResponses({@ApiResponse(responseCode = "200", description = "OK"),
      @ApiResponse(responseCode = "500", description = "if GemFire throws an error or exception")})
  public ResponseEntity<?> ping() {
    return new ResponseEntity<>(HttpStatus.OK);
  }
Ping is not secured so that it may not be used to determine a valid username/password
geode-web-api/src/main/java/org/apache/geode/rest/internal/web/controllers/CommonCrudController.java