问题

Cerberus组件在做什么

  • 2021年5月14日
  • 1回复
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t

我们注意到最近在测试集群中，所有操作都需要很长时间才能完成。这似乎是由于持久的“ Cerberus”任务被类型的“无负荷”执行。有谁知道“ Cerberus”在做什么或如何加快速度？每当我们杀死Cerberus任务时，所有其他排队的“非Cerberus”任务就会开始执行。

We noticed that recently in our test cluster all operations take very long to complete. This seems to be due to long lasting \u201ccerberus\u201d tasks being executed with a type \u201cuncharge\u201d. Does anyone know what \u201ccerberus\u201d is doing or how I could speed it up? Whenever we kill the cerberus tasks manually all other queued \u2018non cerberus\u2019 tasks start to execute.<\/p>","quoteUsername":"thirdeyenick","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

1回复

t

实际上，我们不知道Cerberus组件在做什么。CERBERUS任务将在APLOS_ENGINE流程中执行。我在PC CVM上的/home/nutanix/bin中找到了一个名为“ cerberus_util”的脚本，可用于删除“流氓费用”（根据文件中的最高评论）。我认为Cerbeus可能必须通过配额或计费做点事？最后，慢速Cerberus任务正在阻止我们所有其他任务（例如VM创建，更新，删除等）。

但是，我们还注意到这些Cerberus任务是由PC CVM上通过CRON（/var/spool/crontabs/nutanix）执行的常规（每5分钟）NCC检查创建的。我们现在禁用了这些检查，并且几天没有运行Cerberus任务。

我想实际上清空所有费用（因为这只是一个测试集群），因为我认为卡桑德拉DB中的某些东西（存储了费用的地方）可能是错误的，但我不知道如何。

如果没有更多的想法，我们将需要在某个阶段重新安装PC CVM。

We actually don\u2019t know exactly what the cerberus component is doing. The cerberus tasks get executed in the aplos_engine processes. I found a script called \u201ccerberus_util\u201d in \/home\/nutanix\/bin on the PC CVM which can be used to remove \u201crogue charges\u201d (according to the top comment in the file). I think cerbeus might have to do something with quotas or maybe billing? In the end the slow cerberus tasks are blocking all our other tasks (like VM creation, updating, deletion, etc).<\/p>

However, we also noticed that these cerberus tasks are created by the regular (every 5 min) ncc checks executed via cron (\/var\/spool\/crontabs\/nutanix) on the PC CVM. We disabled those checks for now and had no cerberus tasks running for some days now.<\/p>

I would like to empty all charges actually (as this is only a testing cluster) as I think something in the cassandra DB (where the charges are stored) might be wrong, but I don\u2019t know how.<\/p>

If there are no more ideas, we will need to reinstall the PC CVM at some stage.<\/p>","quoteUsername":"thirdeyenick","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

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