Web application troubleshooting: Difference between revisions

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== Database level ==
== Database level ==
* 確認資料庫連線有建立？
* 確認資料庫 SQL 查詢語法是否正確？或者逾時？ [https://dev.mysql.com/doc/refman/5.7/en/error-log.html MySQL :: MySQL 5.7 Reference Manual :: 5.4.2 The Error Log]


== Web server level ==
== Web server level ==


* [https://httpd.apache.org/docs/2.4/logs.html Log Files - Apache HTTP Server Version 2.4]
* [https://httpd.apache.org/docs/2.4/logs.html Log Files - Apache HTTP Server Version 2.4] on {{Win}} & {{Linux}}
* [https://docs.nginx.com/nginx/admin-guide/monitoring/logging/ Configuring Logging | NGINX Plus]
* [https://docs.nginx.com/nginx/admin-guide/monitoring/logging/ Configuring Logging | NGINX Plus] on {{Win}} & {{Linux}}
* [https://docs.microsoft.com/zh-tw/windows/win32/http/iis-logging IIS 記錄 - Win32 apps | Microsoft Docs] on {{Win}}
 
Example command: This command is used to view the last few lines of the Nginx server's error log file.
<pre>
sudo tail /var/log/nginx/error.log
</pre>
 
* sudo: Execute with administrator privileges
* tail: Display the end portion of a file
* /var/log/nginx/error.log: Default path for Nginx error log file
 
You can add -f parameter to monitor the log file in real-time:


== OS level ==
== OS level ==
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{{Template:Troubleshooting}}
{{Template:Troubleshooting}}


[[Category:Programming]]
[[Category: Programming]]
[[Category: Linux]]

Latest revision as of 13:47, 20 January 2025

網站應用程式技術問題排除

Web script level[edit]

Database level[edit]

Web server level[edit]

Example command: This command is used to view the last few lines of the Nginx server's error log file. 

sudo tail /var/log/nginx/error.log
  • sudo: Execute with administrator privileges
  • tail: Display the end portion of a file
  • /var/log/nginx/error.log: Default path for Nginx error log file

You can add -f parameter to monitor the log file in real-time:

OS level[edit]

  • Win   系統管理工具 (Administrative Tools) -> 事件檢視器 (Event Viewer)
  • Linux  


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