线上出故障了！我慌得一匹！教大家如何应对在线故障！

超、凢脫俗 2022-04-13 11:57 83阅读 0赞

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70]

> 本文作者：飒然Hang  
> 原文地址：[http://www.rowkey.me/blog/2018/11/22/online-debug][http_www.rowkey.me_blog_2018_11_22_online-debug]

线上运行的Java应用突然没有响应、响应缓慢，进程突然消失，遇到这些情况应该如何应对呢？

今天教大家如何应对在线故障！

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 1]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 2]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 3]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 4]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 5]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 6]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 7]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 8]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 9]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 10]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 11]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 12]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 13]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 14]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 15]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 16]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 17]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 18]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 19]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 20]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 21]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 22]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 23]

**热门内容：**

1、[无人不冤，有情皆孽][Link 1]

2、[【双11狂欢背后】微服务注册中心如何承载大型系统的千万级访问？][11]

3、[Redis热点Key发现及常见解决方案！][Redis_Key]

4、[Docker的6年之痒！][Docker_6]

5、[Kafka如何做到1秒处理1500万条消息？][Kafka_1_1500]

6、[Redis敢在线上做Keys正则匹配操作！你可以离职了！][Redis_Keys]

7、[【面试必问】支撑百万并发的"IO多路复用"技术你了解吗？][IO]

![在这里插入图片描述][20190602133102112.png]

[【视频福利】2T免费学习视频，搜索或扫描上述二维码关注微信公众号：Java后端技术（ID: JavaITWork）回复：**1024**，即可免费获取！内含SSM、Spring全家桶、微服务、MySQL、MyCat、集群、分布式、中间件、Linux、网络、多线程，Jenkins、Nexus、Docker、ELK等等免费学习视频，持续更新！][2T_Java_ID_ JavaITWork_1024_SSM_Spring_MySQL_MyCat_Linux_Jenkins_Nexus_Docker_ELK]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70]: /images/20220413/f0cbb8dbe9ee440499029db841be8a56.png
[http_www.rowkey.me_blog_2018_11_22_online-debug]: http://www.rowkey.me/blog/2018/11/22/online-debug
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 1]: /images/20220413/1d57846d0dc34fa7bdabf289036537e9.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 2]: /images/20220413/a72c7d126ed74de6bf20e482db28f10c.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 3]: /images/20220413/72264b7e1d4e4e519935e2298530a2ba.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 4]: /images/20220413/27facea4c47846b191301dfbffe9493b.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 5]: /images/20220413/da1678b8dbba41ce889af40e7271fcf0.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 6]: /images/20220413/761bba8d51da4d7c87215b02953dc5e5.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 7]: /images/20220413/f1644daed90043e8acf9655124bd0484.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 8]: /images/20220413/f5d8397684504583ab15c75a3dab4e77.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 9]: /images/20220413/46d847b56e5940d688ab4b50ec406ef9.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 10]: /images/20220413/86c5282cd8994de7a278f07ca913ec73.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 11]: /images/20220413/ea20c75f0f7048d087c3b2b82e1bff36.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 12]: /images/20220413/24da5d22b9e244ef9801350d2c4172a0.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 13]: /images/20220413/8abb5aa8a67847ef980822ef9da8bd9c.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 14]: /images/20220413/17680aac4a5643158e9b721cabe4cf08.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 15]: /images/20220413/ed064a826cfa4d0997057b4e63063a98.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 16]: /images/20220413/e3e4b8b36e4d44e9b369ef493cde29e0.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 17]: /images/20220413/615d300c13584aada9615155a5cba4be.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 18]: /images/20220413/4cc13433e6214cc7a8f797694de66866.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 19]: /images/20220413/f11470850e6a4b5cb51be0397e870e76.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 20]: /images/20220413/7cdf1608b18f465d96f5f9bf875c0198.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 21]: /images/20220413/cf0c260ee3634a4da2d398ba088efbbe.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 22]: /images/20220413/3b7d5babef2b4832bb0f8c5448226b4a.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA4NzA1MTg_size_16_color_FFFFFF_t_70 23]: /images/20220413/e8dcdbd8523148eea8e3b9e55cc9e7f7.png
[Link 1]: https://mp.weixin.qq.com/s?__biz=MzUxOTAxODc2Mg==&mid=2247483748&idx=1&sn=e88275c5b5146744b3bf824742301503&scene=21#wechat_redirect
[11]: http://mp.weixin.qq.com/s?__biz=MzI1NDQ3MjQxNA==&mid=2247487682&idx=1&sn=2588b097d256736e28883bfe0b12c092&chksm=e9c5e973deb26065d37c2a733dda64f75fa4e209fc9930af0db0dc5f295dd9269a3ed3dec82d&scene=21#wechat_redirect
[Redis_Key]: http://mp.weixin.qq.com/s?__biz=MzI1NDQ3MjQxNA==&mid=2247487673&idx=1&sn=f7429aeedb3b5fd567b17357eb2b0cad&chksm=e9c5e908deb2601e5daef18db1b4a1a4c176346e3c986435258fe30a4c86f602695d38bfe5f3&scene=21#wechat_redirect
[Docker_6]: http://mp.weixin.qq.com/s?__biz=MzI1NDQ3MjQxNA==&mid=2247487649&idx=1&sn=4c2940610a58b39567f1179fcedb9052&chksm=e9c5e910deb2600626d5f34e9e03ae593439560441bc9ce477982178d33aaf59f46b000b0c81&scene=21#wechat_redirect
[Kafka_1_1500]: http://mp.weixin.qq.com/s?__biz=MzI1NDQ3MjQxNA==&mid=2247487645&idx=1&sn=b93d527d063d7204d56516e166c5c8fd&chksm=e9c5e92cdeb2603a5217b42aaf98315a80036cd8f0853ce3b9a408087cd2cfe906be1988e8b7&scene=21#wechat_redirect
[Redis_Keys]: http://mp.weixin.qq.com/s?__biz=MzI1NDQ3MjQxNA==&mid=2247487584&idx=1&sn=8090ebf84323636639164485acc21b85&chksm=e9c5e9d1deb260c7d74b1b41f150b95d9ea3463a80315fc2350ad10dae7c9a65c05af5f7aea4&scene=21#wechat_redirect
[IO]: http://mp.weixin.qq.com/s?__biz=MzI1NDQ3MjQxNA==&mid=2247487566&idx=1&sn=08b67ec95756fd9366987fa793a70db4&chksm=e9c5e9ffdeb260e92a388c7b90e17724ce73b82b2743f26a82e8e7ffe40a376261c0978ddbbd&scene=21#wechat_redirect
[20190602133102112.png]: /images/20220413/0d2b12be3bd54a8d99932f691a2656fc.png
[2T_Java_ID_ JavaITWork_1024_SSM_Spring_MySQL_MyCat_Linux_Jenkins_Nexus_Docker_ELK]: http://mp.weixin.qq.com/s?__biz=MzI1NDQ3MjQxNA==&mid=100005643&idx=1&sn=ed08bcf127fc549202ff273abeeb3d1a&chksm=69c5eeba5eb267ac550ed247d72d6c43e11551f25fe80f8ea6a3146682ce2266dad880ce48de#rd