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首页> 外文期刊>The Journal of Systems and Software >Metric selection and anomaly detection for cloud operations using log and metric correlation analysis
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Metric selection and anomaly detection for cloud operations using log and metric correlation analysis

机译:使用日志和度量相关分析对云操作进行度量选择和异常检测

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摘要

Cloud computing systems provide the facilities to make application services resilient against failures of individual computing resources. However, resiliency is typically limited by a cloud consumer’s use and operation of cloud resources. In particular, system operations have been reported as one of the leading causes of system-wide outages. This applies specifically to DevOps operations, such as backup, redeployment, upgrade, customized scaling, and migration – which are executed at much higher frequencies now than a decade ago. We address this problem by proposing a novel approach to detect errors in the execution of these kinds of operations, in particular for rolling upgrade operations. Our regression-based approach leverages the correlation between operations’ activity logs and the effect of operation activities on cloud resources. First, we present a metric selection approach based on regression analysis. Second, the output of a regression model of selected metrics is used to derive assertion specifications, which can be used for runtime verification of running operations. We have conducted a set of experiments with different configurations of an upgrade operation on Amazon Web Services, with and without randomly injected faults to demonstrate the utility of our new approach.
机译:云计算系统提供了使应用程序服务抵御单个计算资源故障的功能。但是,弹性通常受云消费者对云资源的使用和操作的限制。特别是,据报告系统操作是系统范围内中断的主要原因之一。这特别适用于DevOps操作,例如备份,重新部署,升级,自定义扩展和迁移,这些操作现在的执行频率比十年前要高得多。我们通过提出一种新颖的方法来检测此类操作的执行中的错误,特别是对于滚动升级操作,来解决此问题。我们基于回归的方法利用了运营活动日志与运营活动对云资源的影响之间的相关性。首先,我们提出一种基于回归分析的指标选择方法。其次,所选指标的回归模型的输出用于导出断言规范,该规范可用于运行操作的运行时验证。我们对Amazon Web Services上的升级操作的不同配置进行了一组实验,无论是否随机注入故障,以证明我们新方法的实用性。

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