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Debugging OpenStack Problems using a State Graph Approach, with Yong Xiang from Tsinghua University
Yong Xiang is a PhD student at Tsinghua University. This episode is a
recording of his talk during APSys 2016, the
Asia-Pacific Workshop on Systems, on Aug. 5, based on Debugging OpenStack
Problems Using a State Graph Approach, written with co-authors Hu Li,
Sen Wang, Charley Peter Chen, and Wei Xu, which was awarded “best
paper” at the conference. A preprint of the paper is also available at arxiv.org.
Slides
from the talk are available. It is probably easier to follow the talk if
you have the slides available, but it is certainly not necessary.
This is a very practical paper that seeks ways to make it easier for
non-experts to troubleshoot and debug an OpenStack deployment. Its
abstract is:
It is hard to operate and debug systems like OpenStack that integrate
many independently developed modules with multiple levels of
abstractions. A major challenge is to navigate through the complex
dependencies and relationships of the states in different modules or
subsystems, to ensure the correctness and consistency of these states. We
present a system that captures the runtime states and events from the
entire OpenStack-Ceph stack, and automatically organizes these data into
a graph that we call system operation state graph (SOSG). With SOSG we
can use intuitive graph traversal techniques to solve problems like
reasoning about the state of a virtual machine. Also, using a graph-based
anomaly detection, we can automatically discover hidden problems in
OpenStack. We have a scalable implementation of SOSG, and evaluate the
approach on a 125-node production OpenStack cluster, finding a number of
interesting problems.
The first question at the end of the talk comes from me, with an answer
assisted by the paper's coauthor Wei Xu, and the second one from Sorav Bansal.
OVS Orbit is produced by Ben Pfaff. The
intro music in this episode is Drive,
featuring cdk and DarrylJ, copyright 2013, 2016 by Alex. The bumper music is
Yeah Ant
featuring Wired Ant and Javolenus, copyright 2013 by Speck. The outro
music is Space
Bazooka featuring Doxen Zsigmond, copyright 2013 by Kirkoid. All content is licensed under a Creative Commons Attribution 3.0
Unported (CC BY 3.0) license.
View all episodes
By Ben Pfaff
5
11 ratings
Yong Xiang is a PhD student at Tsinghua University. This episode is a
recording of his talk during APSys 2016, the
Asia-Pacific Workshop on Systems, on Aug. 5, based on Debugging OpenStack
Problems Using a State Graph Approach, written with co-authors Hu Li,
Sen Wang, Charley Peter Chen, and Wei Xu, which was awarded “best
paper” at the conference. A preprint of the paper is also available at arxiv.org.
Slides
from the talk are available. It is probably easier to follow the talk if
you have the slides available, but it is certainly not necessary.
This is a very practical paper that seeks ways to make it easier for
non-experts to troubleshoot and debug an OpenStack deployment. Its
abstract is:
It is hard to operate and debug systems like OpenStack that integrate
many independently developed modules with multiple levels of
abstractions. A major challenge is to navigate through the complex
dependencies and relationships of the states in different modules or
subsystems, to ensure the correctness and consistency of these states. We
present a system that captures the runtime states and events from the
entire OpenStack-Ceph stack, and automatically organizes these data into
a graph that we call system operation state graph (SOSG). With SOSG we
can use intuitive graph traversal techniques to solve problems like
reasoning about the state of a virtual machine. Also, using a graph-based
anomaly detection, we can automatically discover hidden problems in
OpenStack. We have a scalable implementation of SOSG, and evaluate the
approach on a 125-node production OpenStack cluster, finding a number of
interesting problems.
The first question at the end of the talk comes from me, with an answer
assisted by the paper's coauthor Wei Xu, and the second one from Sorav Bansal.
OVS Orbit is produced by Ben Pfaff. The
intro music in this episode is Drive,
featuring cdk and DarrylJ, copyright 2013, 2016 by Alex. The bumper music is
Yeah Ant
featuring Wired Ant and Javolenus, copyright 2013 by Speck. The outro
music is Space
Bazooka featuring Doxen Zsigmond, copyright 2013 by Kirkoid. All content is licensed under a Creative Commons Attribution 3.0
Unported (CC BY 3.0) license.