Bluemix 中用于自动缩放的 REST API 没有定义 policyTriggers？

Question

我需要通过 REST API 配置自动缩放，或者至少确保从文件位置选择策略配置。我现在看到的唯一配置它的方法是通过 UI。在REST API 中，policyTriggers 没有定义，我也看不到通过任何基于文件的配置来配置它的方法。

Answer 1

似乎文档站点正在维护中，并且缺少 BlueMix Auto-scaling REST API 正在使用的许多信息元素定义。 PolicyTriggers 是一个 PolicyTrigger 数组，其中包括以下项（json 格式）： == ==

                policyTriggers   -  List<Trigger>    -  Required - Trigger setting for this policy, each trigger is defined as below 
                 metricType             -  String -  Required - enumerated type for this trigger, for Java application, they are: JVMHeapUsage, Memory, Throughput, ResponseTime. For other app, only Memory is available.
                 statWindow             -  int    -  Optional - interval to calculate statistics in seconds 
                 breachDuration         -  int    -  Optional - breach duration in seconds is divided by the periodicity of the metric to determine the number of data points that will result in a scaling event
                 lowerThreshold         -  int    -  Optional - lower threshold that will trigger a scaling event, usually scaling-in, for JVMHeapUsage and Memory it's percentage, for Throughput, it's request per second and for ResponseTime, it's milliseconds
                 upperThreshold         -  int    -  Optional - upper threshold that will trigger a scaling event, usually scaling-out. for JVMHeapUsage and Memory it's percentage, for Throughput, it's request per second and for ResponseTime, it's milliseconds
                 instanceStepCountDown  -  int    -  Optional - number of instances to reduce per scaling-in action
                 instanceStepCountUp    -  int    -  Optional - number of instances to increase per scaling-out action
                 stepDownCoolDownSecs   -  int    -  Optional - cool down period that prevent further scaling in action
                 stepUpCoolDownSecs     -  int    -  Optional - cool down period that prevent further scaling out  action 

创建策略的另一种方法是使用 Auto-scaling CLI(https://console.ng.bluemix.net/docs/cli/plugins/auto-scaling/index.html)，您可以打开保存的策略文件并查看 PolicyTriggers 的结构。