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arXiv 2102.12877cs.LGcs.SE
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TELESTO:一种用于云服务异常分类的图神经网络模型

TELESTO: A Graph Neural Network Model for Anomaly Classification in Cloud Services

TU Berlin(柏林工业大学)

Dominik Scheinert, Alexander Acker

摘要:

大型IT系统的部署、操作和维护变得越来越复杂,当出现问题时,会使人类专家面临极大的压力。因此,机器学习(ML)和人工智能(AI)被应用于IT系统的运行和维护-概括为AIOps。一个特定的方向旨在识别重复发生的异常类型,以实现补救自动化。然而,由于IT系统的特定属性,特别是其频繁的变化(例如软件更新,重新配置或硬件现代化),识别重复发生的异常类型是具有挑战性的。当前的方法主要假设所提供的数据的静态维度。我们提出了一种方法,是不变的给定数据的维数变化。资源度量数据,如CPU利用率,分配的内存和其他建模为多变量时间序列。时间和空间特征的提取以及随后的异常分类是通过利用TELESTO,我们的新的图形卷积神经网络(GCNN)架构实现的。实验评估是在托管两个应用程序的真实云测试平台部署中进行的。在cassandra数据库节点上注入异常的分类结果表明,TELESTO优于替代GCNN,并实现了85.1%的整体分类准确率。其他节点的分类结果显示准确率值在85%和60%之间。

英文摘要:

Deployment, operation and maintenance of large IT systems becomes increasingly complex and puts human experts under extreme stress when problems occur. Therefore, utilization of machine learning (ML) and artificial intelligence (AI) is applied on IT system operation and maintenance - summarized in the term AIOps. One specific direction aims at the recognition of re-occurring anomaly types to enable remediation automation. However, due to IT system specific properties, especially their frequent changes (e.g. software updates, reconfiguration or hardware modernization), recognition of reoccurring anomaly types is challenging. Current methods mainly assume a static dimensionality of provided data. We propose a method that is invariant to dimensionality changes of given data. Resource metric data such as CPU utilization, allocated memory and others are modelled as multivariate time series. The extraction of temporal and spatial features together with the subsequent anomaly classification is realized by utilizing TELESTO, our novel graph convolutional neural network (GCNN) architecture. The experimental evaluation is conducted in a real-world cloud testbed deployment that is hosting two applications. Classification results of injected anomalies on a cassandra database node show that TELESTO outperforms the alternative GCNNs and achieves an overall classification accuracy of 85.1%. Classification results for the other nodes show accuracy values between 85% and 60%.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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