应用程序抛出异常，说明web.config已被修改，但事实并非如此 [英] App throws exception that web.config was modified but it's not
问题描述
我的asp.net网站表单网站在azure应用程序服务上遇到了奇怪的问题.
I'm facing strange problem on azure app service with my asp.net web forms site.
有例外:
ConfigurationErrorsExceptionSystem.Configuration.BaseConfigurationRecord in EvaluateOne
The configuration file has been changed by another program. (D:\home\site\wwwroot\web.config)
ConfigurationErrorsException: The configuration file has been changed by another program. (D:\home\site\wwwroot\web.config)
Module "System.Configuration.BaseConfigurationRecord", line 72, col 0, in EvaluateOne
System.Object EvaluateOne(System.String[], System.Configuration.SectionInput, Boolean, System.Configuration.FactoryRecord, System.Configuration.SectionRecord, System.Object)
Module "System.Configuration.BaseConfigurationRecord", line 515, col 0, in Evaluate
Boolean Evaluate(System.Configuration.FactoryRecord, System.Configuration.SectionRecord, System.Object, Boolean, Boolean, System.Object ByRef, System.Object ByRef)
Module "System.Configuration.BaseConfigurationRecord", line 666, col 0, in GetSectionRecursive
Void GetSectionRecursive(System.String, Boolean, Boolean, Boolean, Boolean, System.Object ByRef, System.Object ByRef)
Module "System.Configuration.BaseConfigurationRecord", line 0, col 0, in GetSection
System.Object GetSection(System.String)
Module "System.Web.Configuration.RuntimeConfig", line 0, col 0, in GetSectionObject
System.Object GetSectionObject(System.String)
Module "System.Web.Configuration.RuntimeConfig", line 19, col 0, in GetSection
System.Object GetSection(System.String, System.Type, ResultsIndex)
Module "System.Web.Configuration.RuntimeConfig", line 0, col 0, in get_Authorization
System.Web.Configuration.AuthorizationSection get_Authorization()
Module "System.Web.Security.UrlAuthorizationModule", line 153, col 0, in OnEnter
Void OnEnter(System.Object, System.EventArgs)
Module "System.Web.HttpApplication+SyncEventExecutionStep", line 65, col 0, in System.Web.HttpApplication.IExecutionStep.Execute
Void System.Web.HttpApplication.IExecutionStep.Execute()
Module "System.Web.HttpApplication", line 21, col 0, in ExecuteStep
System.Exception ExecuteStep(IExecutionStep, Boolean ByRef)
在部署应用程序10-15分钟后会抛出带有异常的YSOD.应用程序没有重新启动，只是显示了YSOD.
YSOD with Exception is throw after 10-15minutes application deploy.App is not restarting it's just showing YSOD.
但是没有人编辑过web.config.修改日期没有改变，内容也没有改变-与win merge相比，文件是相同的(部署后一整天会抛出异常).
But no one edited web.config. Date modified didn't change and nor did the content - compared with win merge and files are identical (one straight after deploy with one that throws exception).
手动保存web.config文件(不进行任何更改)或重新部署应用程序后，问题将在接下来的10-15分钟内解决.
After manually saving web.config (without any changes) file or re deploying app problem is resolved for next 10-15 minutes.
@ Edit1
也尝试过
- 将其部署为另一个应用程序服务-不起作用
- 不在本地运行 azure(可以正常工作，因此似乎与azure应用程序服务相关联 主机).
- deploy it as another app service - not working
- run it locally not on azure (working so it seems to be connected with azure app service host).
@ Edit2
从6.6.2017起，我们在日志中遇到了第一个错误，并且不时发生(我说每周一次.但这是在流量非常低的测试环境中)，直到两天前(2017年6月27日).然后它爆炸并一直发生.
We got first error in logs from 6.6.2017 and it occured from time to time (i'd say once a week. But it's test environment with very low traffic) till two days ago (27.06.2017). Then It just exploded and happens all the time.
@ Edit3
我从符号服务器下载了源文件并对其进行了调试.
I Downloaded source files from symbol server and debugged it.
从方法GetStreamVersion返回的当前版本很奇怪.上次写入时间是创建时间之前的10分钟. (也许在应用崩溃之前，它以某种方式与10-15连接?)
Current version returned from method GetStreamVersion is strange. Last write time is 10 minutes before creation time. (maybe it's somehow connected with 10-15 before app crashes?)
上一个与当前版本比较的版本是正常的.在上次写入之前创建.
Where Last version which is compared with current version is normal. Created before last write.
不知道为什么要修改创建时间.我用powershell在kudu上再次检查了它，一切似乎都还不错(值与lastVersion中的相同).
No idea why creation time is modified. I double checked it on kudu with powershell and everything seems to be ok (values are the same as in lastVersion).
currentVersion:
currentVersion:
- CreatedTime:{6/29/2017 10:28:30 AM
- LastWriteTime:{6/29/2017 10:17:18 AM}
lastVersion:
lastVersion:
- CreatedTime:{6/28/2017 8:50:11 AM}
- LastWriteTime:{6/29/2017 10:17:18 AM}
使用kudu进行web.config的时间:
Times taken with kudu for web.config:
- CreationTime:6/28/2017 8:50:11 AM
- LastWriteTime:6/29/2017 10:17:18 AM
- LastAccessTime:6/28/2017 8:50:11 AM
推荐答案
从Azure团队收到的响应:
Received response from the Azure team:
设置WEBSITE_DYNAMIC_CACHE_FCN_MODE = 1首先尝试，根据问题行为，它应该可以解决该问题.如果此设置无法修复，则需要执行WEBSITE_DYNAMIC_CACHE = 0
Setting WEBSITE_DYNAMIC_CACHE_FCN_MODE = 1 try it first, as per issue behavior it should address the issue. If this setting does not heal we need to go for WEBSITE_DYNAMIC_CACHE = 0
旁注:
设置WEBSITE_DYNAMIC_CACHE_FCN_MODE = 1不应导致 性能影响.设置WEBSITE_DYNAMIC_CACHE = 0可能会稍微 如果网站内容的大小是 巨大.
Setting WEBSITE_DYNAMIC_CACHE_FCN_MODE = 1 should not lead to performance impact. Setting WEBSITE_DYNAMIC_CACHE = 0 may slightly impact the performance during initial loads if website content size is huge.
他们仍在调查为什么突然出现此问题.
They are still investigating why this problem occurred all the sudden.
这篇关于应用程序抛出异常，说明web.config已被修改，但事实并非如此的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
