问题

如何获取虚拟机/主机/集群/等。散装空气污染指数的统计数字?

  • 2019年10月31日
  • 4回复
  • 1848的浏览量
米

你好,

有办法获得虚拟机/主机/集群/等。散装空气污染指数的统计数字?

我们知道/stats端点，但它们只允许获取单个实体的统计数据，所以如果集群中有数百个vm，这意味着对API有数百个单独的请求。我们真的不想仅仅通过投票统计就给集群带来太多压力。我们默认的轮询时间间隔是几分钟，所以使用投影=stats并不适合我们(因为我认为它提供了当前值)，我们需要知道轮询时间间隔的统计信息。

非常感谢您的时间。

最好的问候,

Marek

Hi,<\/p>

\u00a0<\/p>

is there a way how to get VM\/Host\/Cluster\/etc. statistics from API in bulk?<\/p>

\u00a0<\/p>

We know about the \/stats endpoints, but those only allow to get stats for single entity, so in case there are hundreds of VMs in cluster that would mean hundreds of separate requests to API. We don't really want to put lot of strain on the cluster just by polling stats. Our default polling interval is several minutes, so using projection=stats doesn't really work for us (as I believe it provides current value) and we'd need to know the stats for the time interval between our polls.<\/p>

\u00a0<\/p>

Thanks so much for your time.<\/p>

\u00a0<\/p>

Best regards,<\/p>

Marek<\/p>","quoteUsername":"MarekSWI","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

4回复

米
排名
Userlevel 3
徽章 ＋４

嗨Marek,

感谢您提出的问题。为了更好地理解你的问题，请将你的问题分为两部分:

  1. 在一个rest调用中多个实体的统计信息
  2. 在轮询间隔之间收集统计信息(在间隔之间是否将它们关联起来)?

你有没有检查过我们的nutanix.dev门户，它有通过rest api收集统计数据的例子。如果你还没有，这里是链接:

https://www.nutanix.dev/2019/01/16/getting-performance-stats-with-the-nutanix-api-v2-0/

https://www.nutanix.dev/2019/09/23/getting-vm-performance-metrics-via-api/

致以最亲切的问候

Hi Marek,<\/p>

thank you for posting your question. To better understand your question, \u00a0have two parts to your question:<\/p>

  1. stats for Multiple entities in a single rest call<\/li>\t
  2. Collecting stats between the polling intervals (are you going to co-relate\u00a0them between the intervals)?<\/li><\/ol>

    have you checked our nutanix.dev portal, which has examples for collecting stats via rest api. incase you haven\u2019t already, here\u2019s the link :
    \u00a0<\/p>

    https:\/\/www.nutanix.dev\/2019\/01\/16\/getting-performance-stats-with-the-nutanix-api-v2-0\/<\/a><\/p>

    https:\/\/www.nutanix.dev\/2019\/09\/23\/getting-vm-performance-metrics-via-api\/<\/a><\/p>

    Best regards<\/p>","quoteUsername":"Mutahir","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

米

你好,穆

谢谢你的快速反应。

我已经检查了所有可能的情况，但都没有成功。是的，我们需要在一个响应中拥有多个实体的数组的统计数据。理想情况下，我们希望在一个响应中有所有的统计数据，而不需要逐个指定它们。

1)广告
目前API V1仅以如下方式提供了虚拟机的统计信息:

https:// {{cluster_ip}}: 9440 / PrismGateway /服务/ rest / v1 / vm /{{vm_uuid}}/统计/ ?指标={{vm_metric}}&startTimeInUsecs={{startTimeInUsecs}}

在哪里{{vm_uuid}}只是一个特定的UUID标识符。

但我们需要统计数据所有实体作为散装一个请求和一个响应，不需要指定它们。至少我们需要能够在一个请求中指定一个实体数组，以获得一个包含大量统计信息的响应。

广告2)

我们需要在轮询间隔之间有统计数据，例如，由于异常和不必要的状态(峰值和下降)的检测。Nutanix API已经提供了我们需要的粒度，但每个实体只有一个请求，这会导致很大的性能开销。

致以最亲切的问候

Hi Mutahir,
\u00a0<\/p>

Thank you for the fast reaction.

I have checked everything what is possible with no success. Yes we need to have stats for an array of multiple entities as\u00a0bulk in one response.<\/strong> Ideally we would like to have all stats in one response without need to specify them one by one.

Ad 1)\u00a0
Currently the API V1 provides only e.g. VMs stats in this way:<\/p>

https:\/\/{{cluster_ip}}:9440\/PrismGateway\/services\/rest\/v1\/vms\/<\/a>{{vm_uuid}}<\/strong><\/a>\/stats\/?metrics={{vm_metric}}&startTimeInUsecs={{startTimeInUsecs}}

Where {{vm_uuid}}<\/strong><\/a>\u00a0<\/strong>is just one particular UUID identifier.

But we need to get stats for all entities as bulk<\/strong> with one request and one response\u00a0without need to specify them.\u00a0At least we need\u00a0to be able to specify an array of entities in one request to get one response containing the bulk of stats.<\/p>

Ad 2 )<\/p>

We need to have stats between the polling intervals e.g. due to a detection of anomalies and unwanted states (peaks and drops). The Nutanix API already provides the granularity that we need but only with one request per entity which causes big performance overhead.<\/p>

\u00a0<\/p>

Best regards
\u00a0<\/p>","quoteUsername":"MarekSWI","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

Alona
排名
Userlevel 6
徽章 ＋5

@MarekSWI

可能有一个更好的解决方案，但在类似的情况下，我必须做的是首先构建uuid数组，然后在循环中查询数组中每个uuid的统计信息，同时将统计信息记录到另一个数组中。

明白了吗?

@MarekSWI<\/user-mention>\u00a0<\/p>

There may a better solution out there but what I had to do in a similar situation was to build an array of UUIDs first, then query stats for each of UUIDs in the array in a loop while recording stats into another array.<\/p>

Does that make sense?<\/p>

\u00a0<\/p>","quoteUsername":"Alona","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

HITESH0801
排名
Userlevel 4
徽章 ＋5

@MarekSWI

这只是一个随机的想法，我们可以尝试在python或JS中使用多线程来调用多个API调用，从而减少执行时间。

希望这对你有帮助!
@MarekSWI<\/user-mention>\u00a0\u00a0

Just a random idea, we can try to use multi-threading either in python or JS to invoke multiple API calls so the execution time decreases.\u00a0
\u00a0<\/p>","quoteUsername":"HITESH0801","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

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