一种基于执行轨迹监测的微服务故障诊断方法

发布时间：2018-01-16 23:02

本文关键词：一种基于执行轨迹监测的微服务故障诊断方法　出处：《软件学报》2017年06期 　论文类型：期刊论文

【摘要】：微服务正逐步成为互联网应用所采用的设计架构,如何有效检测故障并定位问题原因,是保障微服务性能与可靠性的关键技术之一.当前的方法通常监测系统度量,根据领域知识人工设定报警规则,难以自动检测故障并细粒度定位问题原因.针对该问题,提出一种基于执行轨迹监测的微服务故障诊断方法.首先,利用动态插桩监测服务组件的请求处理流,进而利用调用树对请求处理的执行轨迹进行刻画;然后,针对影响执行轨迹的系统故障,利用树编辑距离来评估请求处理的异常程度,通过分析执行轨迹差异来定位引发故障的方法调用;最后,针对性能异常,采用主成分分析抽取引起系统性能异常波动的关键方法调用.实验结果表明:该方法可以准确刻画请求处理的执行轨迹,以方法为粒度,准确定位系统故障以及性能异常的问题原因.
[Abstract]:Micro-service is gradually becoming the design framework used in Internet applications, how to effectively detect failures and locate the cause of the problem. It is one of the key technologies to ensure the performance and reliability of microservices. The current methods usually monitor system metrics and manually set alarm rules according to domain knowledge. It is difficult to detect the fault automatically and locate the problem of fine granularity. In view of this problem, a fault diagnosis method of micro-service based on execution track monitoring is proposed. Firstly, the request processing flow of the service component is monitored by dynamic piling. Then, the execution track of request processing is described by call tree. Then, aiming at the system fault which affects the execution trajectory, the tree edit distance is used to evaluate the abnormal degree of the request processing, and the method call that causes the fault is located by analyzing the difference of the execution trajectory. Finally, the principal component analysis (PCA) is used to extract the key method which causes the abnormal performance fluctuation of the system. The experimental results show that the method can accurately describe the execution trajectory of request processing, and take the method as the granularity. Accurately locate system failures and cause problems with abnormal performance.
【作者单位】：中国科学院软件研究所;中国科学院大学;广西大学计算机与电子信息学院;中科软科技股份有限公司;
【基金】：国家自然科学基金(61402450,61363003,61572480) 北京市自然科学基金(4154088) CCF-启明星辰“鸿雁”科研资助计划(CCF-Venustech RP2016007) 国家科技支撑计划(2015BAH55F02)~~
【分类号】：TP277
【正文快照】： 互联网应用的动态性和复杂性不断增加,传统的软件架构已经难以适应用户需求的快速变化.微服务(microservices)[1,2]将复杂的软件系统拆分成功能单一、可独立开发部署的服务组件,通过轻量级通信机制使得这些组件协同配合,从而形成一种高内聚低耦合的系统架构.SOA[3]和微服务一

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