CVM警报 - 超过98％磁盘的阈值|Nutanix社区

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棱镜对下属及其行动

CVM警报 - 超过98％磁盘的阈值超过

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CVM警报 - 超过98％磁盘的阈值超过

2年前
2020年4月24日

6个答复

2039观看次数

t

+2

Thegman

开拓者

24个答复

我的CVM之一是发出此警报：

CVM阈值超过98％的磁盘

我在任何地方都找不到在此警报上发布的任何内容……希望一些帮助理解这一点以及如何减轻它。

进行了完整的NCC检查，它恢复了干净，只有1个警告。

图标
最好的答案Thegman2020年5月4日，16:17

After an\u00a0evaluation of performance counters I\u2019m chalking this up to a false alert created by our monitoring system.\u00a0 \u00a0 It happens.. and its always a pain in the a** when it does because it creates wasted work cycles.\u00a0 \u00a0<\/p>
Thanks to those who provided some assistance in looking into this.<\/p>
\u00a0<\/p>","className":"post__content__best_answer"}">
查看原件

AHV

警报

磁盘io

One of my CVMs is throwing this alert:<\/p>
CVM threshold of 98 Percent Disk IO exceeded<\/p>
I can\u2019t find anything published on this alert anywhere\u2026\u00a0 would like some assistance understanding this and how to mitigate it..\u00a0\u00a0<\/p>
Ran a complete NCC check and it came back clean, just 1 warning.\u00a0\u00a0<\/p>
\u00a0<\/p>
\u00a0<\/p>","quoteUsername":"theGman","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

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6个答复

最古老的第一

新的先来最佳投票

UserLevel 6

+5

阿罗纳

Nutanix员工

433个答复

2年前
2020年4月30日

嘿，嘿！您是否正在使用报告警报的第三方监视系统？那是您看到的吗？还是在棱镜中报道？

Hey, hey! Are you using a third party monitoring system which reports that alert? Is that where you see this? Or is it reported in the Prism?<\/p>","quoteUsername":"Alona","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

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+2

Thegman

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开拓者

24个答复

2年前
2020年4月30日

嗨，Alona-是的，我们正在使用与Nutanix进行特定集成的第三方监测系统，该公司是Zenoss，并且与Nutanix Zenpack进行了集成。棱镜上没有警报。我不知道Zenoss与Nutanix在多大程度上生产了这种“ Zenpack”，或者他们如何得出结论，即CVM超过98％的磁盘IO…如果它基于吞吐量，我可以更好地理解它，因为磁盘本身很高多变的。

Hi Alona - yes we are using a 3rd party monitoring system with a specific integration with Nutanix, the company is Zenoss and the integration is done with the Nutanix Zenpack.\u00a0 \u00a0There isn\u2019t an alert in prism showing this.\u00a0 \u00a0I have no idea to what extent Zenoss worked with Nutanix to produce this \u201cZenpack\u201d or how they are arriving at conclusion that the CVM exceeded 98% disk IO\u2026\u00a0I could understand it better if it was based on throughput since disk IO itself is highly variable.\u00a0\u00a0<\/p>","quoteUsername":"theGman","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

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阿罗纳

Nutanix员工

433个答复

2年前
2020年5月1日

这就是我的想法，但需要您先确认:)

这不是Nutanix警报，因此您看不到它作为NCC健康检查报告的一部分。

阈值可从Zenoss控制台配置。以下是一个潜在的位置（我绝不是Zenoss的专家，但它可能会为您提供首先看待的启动）。

让我知道是否有帮助。

That\u2019s what I thought but needed you to confirm first:)<\/p>
This is not a Nutanix alert hence you do not see it coming up as part of NCC health check report.<\/p>
The thresholds are configurable from Zenoss console. Below is a potential location (in no way I am an expert in Zenoss but it might give you a kick start in terms of where to look first).<\/p>
$\"//www.jhbzcj.com/next/prism-for-infra-and-it-ops-26/\"$ <\/figure>
Let me know if that helps, please.<\/p>","quoteUsername":"Alona","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

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+2

Thegman

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24个答复

2年前
2020年5月1日

嗨，Alona-我在这里做什么，删除警报或将阈值从98％更改为100％？I think the point here is that the alert was triggered indicating a 98% disk IO for the CVM, in a cluster that is for the most part not highly consolidated, although that doesn’t mean much because it only takes a couple of heavy hitters to be disruptive in a shared infrastructure.

我认为这里更相关的是Nutanix的指导，即A）CVS的高IO是正常的，不必担心，或者b）这是一个异常，需要调查集群内的操作。

根据Zenoss文档，这款Nutanix Zenpack与Nutanix Engineering一起“据说”。因此，一方面，我们有一个警报是由这种集成触发的，另一方面它没有在Nutanix Prism中触发。也许这种断开连接只不过是一个错误的警报？非常可能..如果我退休的几年来，我从监视系统中获得了一美元。:)

谢谢

Hi Alona - what would I do here, remove the alert or change the threshold from 98% to 100%?\u00a0 I think the point here is that the alert was triggered indicating a 98% disk IO for the CVM, in a cluster that is for the most part not highly consolidated, although that doesn\u2019t mean much because it only takes a couple of heavy hitters to be disruptive in a shared infrastructure.\u00a0 \u00a0<\/p>
I think what is more pertinent here is guidance from Nutanix that either A) high IO from the CVS is normal and not to worry about, or B) this is an anomaly\u00a0that requires investigation into operations within the cluster.\u00a0\u00a0<\/p>
This Nutanix Zenpack, per Zenoss documentation,\u00a0was \u201csupposedly\u201d developed in conjunction with Nutanix Engineering.\u00a0 \u00a0So on one hand we have an alert being triggered by this integration and on the other its not triggered in Nutanix prism.\u00a0 \u00a0Perhaps this disconnect is nothing more than a false alert?\u00a0 \u00a0Very possible.. If I had a dollar for every false alert from a monitoring system over the years I\u2019d retire.. :)\u00a0<\/p>
\u00a0<\/p>
Thanks<\/p>
\u00a0<\/p>
\u00a0<\/p>","quoteUsername":"theGman","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

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+4

杰里米

Nutanix员工

77个答复

2年前
2020年5月2日

@Thegman您是否同时看到相关的尖峰或延迟的增加？如果没有，我要么增加阈值或禁用警报。如果有延迟增加，警报似乎值得。

我将在使用指示的CVM选择主机后，在prism，“硬件仪表板”中的这些统计数据中查看。

至于缓解情况（如果有必要），我认为这确实是一个工作负载分配和在物理节点之间平衡的问题。CVM IO主要由本地VM生成。还有其他IO生成过程，例如DR复制，存储清理，后处理压缩等，但是它们要么平衡，要么将其本地化为VM所在的节点。

如果您想在多个CVM上扩展单个大VM的磁盘工作量，则可以使用音量组而不是标准VM磁盘来完成。

我希望这些答案能帮助您的环境中的情况。如果需要，请随时澄清。

@theGman<\/user-mention>\u00a0do you see a correlating spike or increase in latency at the same time? If not, I would either increase the threshold or disable the alert. If there is a latency increase the alert seems worthwhile.<\/p>
I would be looking at these stats in Prism, on the Hardware dashboard, host performance tab in the lower panel after selecting the host with the indicated CVM.\u00a0<\/p>
As far as mitigating the situation (if warranted), I\u2019d think it\u2019s\u00a0really a question of workload distribution and balancing between the physical nodes. CVM IO is generated primarily by local VM\u2019s. There are other IO generating processes such as DR replication, storage clean-up, post-process compression and the like, but these would either be balanced or would be localized to the node where the VM resides.<\/p>
If you wanted\u00a0to spread the disk workload of a single large VM across multiple CVMs, this can be done using volume groups rather than standard VM disks.<\/p>
I hope these answers help with the situation in your environment. Feel free to prod for clarification if needed.<\/p>","quoteUsername":"JeremyJ","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

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+2

Thegman

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开拓者

24个答复

2年前
2020年5月4日

回答

在对性能计数器进行评估之后，我将其归功于我们的监视系统创建的错误警报。它发生了..当它这样做时，它总是痛苦的，因为它会产生浪费的工作周期。

感谢那些为此提供一些帮助的人。

After an\u00a0evaluation of performance counters I\u2019m chalking this up to a false alert created by our monitoring system.\u00a0 \u00a0 It happens.. and its always a pain in the a** when it does because it creates wasted work cycles.\u00a0 \u00a0<\/p>
Thanks to those who provided some assistance in looking into this.<\/p>
\u00a0<\/p>","quoteUsername":"theGman","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

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