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[#]: collector: (lujun9972)
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[#]: translator: (geekpi)
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[#]: reviewer: ( )
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[#]: publisher: ( )
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[#]: url: ( )
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[#]: subject: (Undo releases Live Recorder 5.0 for Linux debugging)
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[#]: via: (https://www.networkworld.com/article/3405584/undo-releases-live-recorder-5-0-for-linux-debugging.html)
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[#]: author: (Sandra Henry-Stocker https://www.networkworld.com/author/Sandra-Henry_Stocker/)
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Undo releases Live Recorder 5.0 for Linux debugging
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======
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![André Gustavo Stumpf \(CC BY 2.0\)][1]
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Linux debugging has taken a giant step forward with the release of Live Recorder 5.0 from Undo. Just released on Wednesday, this product makes debugging on multi-process systems significantly easier. Based on flight recorder technology, it delves more deeply into processes to provide insight into what’s going on within each process. This includes memory, threads, program flow, service calls and more. To make this possible, Live Recorder 5.0's record, replay and debugging capabilities have been enhanced with the ability to:
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* Record the exact order in which processes altered shared memory variables. It is even possible to zero in on specific variables and skip backward to the last line of code in any process that altered the variable.
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* Expose potential defects by randomizing thread execution to help reveal race conditions, crashes and other multi-threading defects.
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* Record and replay the execution of individual Kubernetes and Docker containers to help resolve defects faster in microservices environments
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The Undo Live Recorder enables engineering teams to record and replay the execution of any software program -- no matter how complex -- and to diagnose and fix the root cause of any issue in test or production.
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Depending on your license, Live Recorder can be used on the command line with the **live-record** command that is somewhat similar to strace though, instead of printing system calls and signals, it creates an "Undo recording". Captured failings in recordings can then be debugged (far more effective than grappling with core dumps!). These recordings can also be can be shared with other members of the staff and can be replayed with the reversible debugger to further investigate the cause of the crash or other problem.
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The Undo Engine is supported on the following Linux distributions:
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* Red Hat Enterprise Linux 6.8, 6.9, 6.10, 7.4, 7.5, 7.6 and 8.0
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* Fedora 28, 29 and 30
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* SuSE Linux Enterprise Server 12.3, 12.4 and 15
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* Ubuntu 16.04 LTS, 18.04 LTS, 18.10 and 19.04
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Undo is a fast-growing, venture-backed technology start-up based in San Francisco and Cambridge, UK. They claim that the Live Recorder provides 100% certainty about the factors that led to any software failure -- even in the most complex software environments.
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Join the Network World communities on [Facebook][2] and [LinkedIn][3] to comment on topics that are top of mind.
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--------------------------------------------------------------------------------
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via: https://www.networkworld.com/article/3405584/undo-releases-live-recorder-5-0-for-linux-debugging.html
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作者：[Sandra Henry-Stocker][a]
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选题：[lujun9972][b]
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]: https://www.networkworld.com/author/Sandra-Henry_Stocker/
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[b]: https://github.com/lujun9972
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[1]: https://images.idgesg.net/images/article/2019/06/flight_data_recorder-100800552-large.jpg
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[2]: https://www.facebook.com/NetworkWorld/
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[3]: https://www.linkedin.com/company/network-world
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@ -0,0 +1,55 @@
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[#]: collector: (lujun9972)
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[#]: translator: (geekpi)
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[#]: reviewer: ( )
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[#]: publisher: ( )
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[#]: url: ( )
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[#]: subject: (Undo releases Live Recorder 5.0 for Linux debugging)
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[#]: via: (https://www.networkworld.com/article/3405584/undo-releases-live-recorder-5-0-for-linux-debugging.html)
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[#]: author: (Sandra Henry-Stocker https://www.networkworld.com/author/Sandra-Henry_Stocker/)
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Undo 发布用于 Linux 调试的 Live Recorder 5.0
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======
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![André Gustavo Stumpf \(CC BY 2.0\)][1]
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随着 Undo 发布 Live Recorder 5.0，Linux 调试迈出了一大步。该产品刚于周三发布，这使得在多进程系统上的调试变得更加容易。它基于软件飞行记录仪技术，它更加深入进程，以深入了解每个进程的情况。这包括内存、线程、程序流，服务调用等。为了实现这一目标，Live Recorder 5.0 的记录，重放和调试功能都得到了增强，能够：
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* 记录进程更改共享内存变量的确切顺序。甚至可以针对特定变量并在任何进程中跳转到最后修改该变量的一行
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* 通过随机化线程执行来暴露潜在缺陷，以帮助揭示竞态，崩溃和其他多线程缺陷。
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* 记录并重放单个 Kubernetes 和 Docker 容器的执行，以帮助在微服务环境中更快地解决缺陷
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Undo Live Recorder 使工程团队能够记录和重放任何软件程序的执行，而无论软件多么复杂。并且可以诊断和修复测试或生产中问题的根本原因。
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根据你的许可证，Live Recorder 可以在命令行中使用 **live-record**命令，但有点类似于 strace，它不会打印系统调用和信号，而是创建一个“Undo 录制”。然后你可以调试录制中捕获的失败（远比分析核心转储高效！）。这些录制也可以与其他工作人员共享，并可以使用可逆调试器进行重放，以进一步调查崩溃原因或其他问题。
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Undo 引擎支持以下 Linux 发行版：
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* Red Hat Enterprise Linux 6.8、6.9、6.10、7.4、7.5、7.6 和 8.0
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* Fedora 28、29 和 30
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* SuSE Linux Enterprise Server 12.3、12.4 和 15
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* Ubuntu 16.04 LTS、18.04 LTS、18.10 和 19.04
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Undo 是一家快速发展的，有风险投资支持的技术初创公司，它的总部位于旧金山和英国剑桥。他们称 Live Recorder 可以 100％ 确定导致任何软件故障的因素 - 即使在最复杂的软件环境中也是如此。
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在 [Facebook][2] 和 [LinkedIn][3] 上加入 Network World 社区，评论你想说的话题。
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--------------------------------------------------------------------------------
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via: https://www.networkworld.com/article/3405584/undo-releases-live-recorder-5-0-for-linux-debugging.html
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作者：[Sandra Henry-Stocker][a]
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选题：[lujun9972][b]
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译者：[geekpi](https://github.com/geekpi)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]: https://www.networkworld.com/author/Sandra-Henry_Stocker/
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[b]: https://github.com/lujun9972
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[1]: https://images.idgesg.net/images/article/2019/06/flight_data_recorder-100800552-large.jpg
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[2]: https://www.facebook.com/NetworkWorld/
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[3]: https://www.linkedin.com/company/network-world
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