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- W2971315908 abstract "Cloud is getting ubiquitous and scales up rapidly. It is critical to effectively detect and efficiently repair system anomalies for a robust cloud. Many efforts have been made to facilitate analysis of system problems with the readily-available and massive cloud logs. However, most tools can still not automatically recognize failures related to a specific cloud operating system task. To diagnose execution failures of a cloud, it is inevitable to monitor corresponding system tasks. In this paper, we propose a lightweight approach to identify cloud behaviors related to failed executions of the cloud operating system for failure diagnosis, by exploiting logs of ERROR logging level in a cloud. Instead of working on execution sequences extracted from logs for all system tasks, we focus on automated recognition of exception logs generated by a system task. These logs are critical snippets of execution traces for failure diagnosis of a cloud. In our work, exception logs are extracted and associated with the respective system task. Efforts can be reduced by comparing patterns of new error cloud behaviors with cloud behaviors met before. With experiments on OpenStack, a popular open source cloud operating system, we demonstrate that our work is effective and efficient for execution failure diagnosis of a cloud. Our approach can also be used as a complementary method for log-based troubleshooting tools concentrating on execution sequences." @default.
- W2971315908 created "2019-09-05" @default.
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- W2971315908 date "2019-07-01" @default.
- W2971315908 modified "2023-10-13" @default.
- W2971315908 title "An Approach to Cloud Execution Failure Diagnosis Based on Exception Logs in OpenStack" @default.
- W2971315908 cites W2598269246 @default.
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- W2971315908 doi "https://doi.org/10.1109/cloud.2019.00031" @default.
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