ASP.NET Core
A set of technologies in the .NET Framework for building web applications and XML web services.
4,199 questions
How should I find out why my website crashed?
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melon NG
291
Reputation points
My website made by asp.net core 5 is running on IIS now.
Yesterday night it crashed. When I access it, it reports 503 service unavailable.
I used the Nlog in it before. However, the logger doesn't log any error about it.
Here are the last log of it:
021-09-14 23:19:39.2178||DEBUG|Test.Program|init main
2021-09-14 23:19:40.1917|50|WARN|Microsoft.AspNetCore.DataProtection.Repositories.EphemeralXmlRepository|Using an in-memory repository. Keys will not be persisted to storage.
2021-09-14 23:19:40.2015|59|WARN|Microsoft.AspNetCore.DataProtection.KeyManagement.XmlKeyManager|Neither user profile nor HKLM registry available. Using an ephemeral key repository. Protected data will be unavailable when application exits.
2021-09-14 23:19:40.2301|35|WARN|Microsoft.AspNetCore.DataProtection.KeyManagement.XmlKeyManager|No XML encryptor configured. Key {78953b87-af35-4aa6-9f6e-31663e449b1b} may be persisted to storage in unencrypted form.
2021-09-14 23:19:47.9667||DEBUG|Test.Program|init main
2021-09-14 23:19:48.9293|50|WARN|Microsoft.AspNetCore.DataProtection.Repositories.EphemeralXmlRepository|Using an in-memory repository. Keys will not be persisted to storage.
2021-09-14 23:19:48.9293|59|WARN|Microsoft.AspNetCore.DataProtection.KeyManagement.XmlKeyManager|Neither user profile nor HKLM registry available. Using an ephemeral key repository. Protected data will be unavailable when application exits.
2021-09-14 23:19:48.9680|35|WARN|Microsoft.AspNetCore.DataProtection.KeyManagement.XmlKeyManager|No XML encryptor configured. Key {e5bb0b45-e316-4f47-a24b-ba38f92b7afd} may be persisted to storage in unencrypted form.
2021-09-14 23:19:49.1207|100|INFO|System.Net.Http.HttpClient.Default.LogicalHandler|Start processing HTTP request POST http://localhost:44368/api/LogSpider/
2021-09-14 23:19:49.1207|100|INFO|System.Net.Http.HttpClient.Default.ClientHandler|Sending HTTP request POST http://localhost:44368/api/LogSpider/
2021-09-14 23:19:49.2140|101|INFO|System.Net.Http.HttpClient.Default.ClientHandler|Received HTTP response headers after 88.6991ms - 200
2021-09-14 23:19:49.2140|101|INFO|System.Net.Http.HttpClient.Default.LogicalHandler|End processing HTTP request after 99.1324ms - 200
2021-09-14 23:20:00.9567||DEBUG|Test.Program|init main
2021-09-14 23:20:02.0055|50|WARN|Microsoft.AspNetCore.DataProtection.Repositories.EphemeralXmlRepository|Using an in-memory repository. Keys will not be persisted to storage.
2021-09-14 23:20:02.0155|59|WARN|Microsoft.AspNetCore.DataProtection.KeyManagement.XmlKeyManager|Neither user profile nor HKLM registry available. Using an ephemeral key repository. Protected data will be unavailable when application exits.
2021-09-14 23:20:02.0490|35|WARN|Microsoft.AspNetCore.DataProtection.KeyManagement.XmlKeyManager|No XML encryptor configured. Key {2ba78927-d245-467c-93d3-2f1e9f0ba52f} may be persisted to storage in unencrypted form.
2021-09-14 23:20:07.8718||DEBUG|Test.Program|init main
2021-09-14 23:20:08.8467|50|WARN|Microsoft.AspNetCore.DataProtection.Repositories.EphemeralXmlRepository|Using an in-memory repository. Keys will not be persisted to storage.
2021-09-14 23:20:08.8560|59|WARN|Microsoft.AspNetCore.DataProtection.KeyManagement.XmlKeyManager|Neither user profile nor HKLM registry available. Using an ephemeral key repository. Protected data will be unavailable when application exits.
2021-09-14 23:20:08.8852|35|WARN|Microsoft.AspNetCore.DataProtection.KeyManagement.XmlKeyManager|No XML encryptor configured. Key {c6e1996d-8f52-4548-85ce-5354c7f5a668} may be persisted to storage in unencrypted form.
It seems the website automatically restart several times before it finally crashed.
I ran the website locally on my computer without any error.
And also, I have deployed this site with localhost hostname on the server computer with the same Physical Path before(I added a new site on IIS for this while not just adding a hostname on the same site). The localhost site runs well.
I tried to stop and restart the site while the error was still here.
What's more, other sites on the server running well.
Finally, I stop the server on IIS and restart it, now the site runs well without the 503 error code.
I want to find out the reason why my website crashes. Could you please tell me how can I find it? Thank you.
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Brando Zhang-MSFT 2,961 Reputation points Microsoft Vendor2021-09-15T05:35:06.83+00:00 Hi @melon NG ,
I want to find out the reason why my website crashes. Could you please tell me how can I find it? Thank you.
I suggest you could try to check your server's event viewer firstly. You could check its application log to see if there is any error thrown by the application pool. Besides, I suggest you could try to check the system to check the w3wp and find why it is stopped.
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melon NG 291 Reputation points
2021-09-15T05:44:39.243+00:00 I did what you said and found out this error:
Level Date and Time Source Event ID Task Category
Error 9/14/2021 11:20:14 PM Application Error 1000 (100) "Faulting application name: w3wp.exe, version: 8.5.9600.16384, time stamp: 0x5215df96
Faulting module name: unknown, version: 0.0.0.0, time stamp: 0x00000000
Exception code: 0xc00000fd
Fault offset: 0x00007ffa232874de
Faulting process id: 0xc3c
Faulting application start time: 0x01d7a97c001608cc
Faulting application path: c:\windows\system32\inetsrv\w3wp.exe
Faulting module path: unknown
Report Id: 422caf8d-156f-11ec-80d3-bec94d5df64c
Faulting package full name:
Faulting package-relative application ID: "However, I still can hardly know what cause it crashed.
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Brando Zhang-MSFT 2,961 Reputation points Microsoft Vendor
2021-09-15T07:56:40.613+00:00 Hi @melon NG , this is an error which doesn't say which module caused this error, is there any other information or warning which is related with WAS?
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melon NG 291 Reputation points
2021-09-18T07:41:30.717+00:00 Today the problem comes again. I found that the application pool has stopped the site automatically. This is why it causes the 503 error. However, why the application pool stoped?
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Brando Zhang-MSFT 2,961 Reputation points Microsoft Vendor
2021-09-22T06:21:04.103+00:00 Hi melonNG-6986, as far as I know, the application pool stopped will be logged into the event viewer normally, I suggest you could check the event viewer logs again. Besides, I suggest you could follow this article to troubleshoot this issue.
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melon NG 291 Reputation points
2021-09-22T06:25:10.22+00:00 Thank you so much
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