Last night, at around 22:00 GMT, we experienced a number of application shutdowns on our production portal. The shutdowns according to the event logs (see below) are all attributed to changes in the hosting environment - changes to the Bin, App_Code, App_Browsers, App_GlobalResources folders, the Global.asax file or because of the hosting environment.
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04/11/2010 22:01:59 Application Shutting Down Shutdown Details: The AppDomain shut down because of the hosting env ...
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Shutdown Details: The AppDomain shut down because of the hosting environment.
Server Name: XXXXXX
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04/11/2010 22:04:15 Application Shutting Down Shutdown Details: The AppDomain shut down because of a change to the ...
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Shutdown Details: The AppDomain shut down because of a change to the Bin folder or files contained in it.
Server Name: YYYYYY
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04/11/2010 22:04:19 Application Shutting Down Shutdown Details: The AppDomain shut down because of a change to the ...
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Shutdown Details: The AppDomain shut down because of a change to the App_Code folder or files contained in it.
Server Name: YYYYYY
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04/11/2010 22:06:45 Application Shutting Down Shutdown Details: The AppDomain shut down because of a change to the ...
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Shutdown Details: The AppDomain shut down because of a change to the App_Code folder or files contained in it.
Server Name: XXXXXX
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04/11/2010 22:11:04 Application Shutting Down Shutdown Details: The AppDomain shut down because of a change to the ...
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Shutdown Details: The AppDomain shut down because of a change to the App_Browsers folder or files contained in it.
Server Name: XXXXXX
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04/11/2010 22:13:05 Application Shutting Down Shutdown Details: The AppDomain shut down because of the hosting env ...
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Shutdown Details: The AppDomain shut down because of the hosting environment.
Server Name: YYYYYY
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04/11/2010 22:18:07 Application Shutting Down Shutdown Details: The AppDomain shut down because of a change to the ...
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Shutdown Details: The AppDomain shut down because of a change to the App_GlobalResources folder or files contained in it.
Server Name: YYYYYY
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04/11/2010 22:28:08 Application Shutting Down Shutdown Details: The AppDomain shut down because of the hosting env ...
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Shutdown Details: The AppDomain shut down because of the hosting environment.
Server Name: YYYYYY
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04/11/2010 22:28:19 Application Shutting Down Shutdown Details: The AppDomain shut down because of a change to Glo ...
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Shutdown Details: The AppDomain shut down because of a change to Global.asax.
Server Name: YYYYYY
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04/11/2010 22:32:07 Application Shutting Down Shutdown Details: The AppDomain shut down because of a change to the ...
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Shutdown Details: The AppDomain shut down because of a change to the App_GlobalResources folder or files contained in it.
Server Name: YYYYYY
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There were no admin or host users logged in at the time and only our operations staff have access to these folders and none of them were logged in or working at this time.
We have checked each of the folders - none of them have any files updated at the times shown in the logs, nor have any files been deleted.
We have checked scheduled back-ups but they all completed successfully at least 15 minutes before we experienced these problems.
We have checked the anti-virus software, but don't believe that this has touched these folders.
The only scheduled jobs that are active on this portal are:
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DotNetNuke.Entities.Users.PurgeUsersOnline, DOTNETNUKE
DotNetNuke.Services.Log.SiteLog.PurgeSiteLog, DOTNETNUKE
DotNetNuke.Services.Scheduling.PurgeScheduleHistory, DOTNETNUKE
DotNetNuke.Services.Log.EventLog.PurgeLogBuffer, DOTNETNUKE
DotNetNuke.Services.Cache.PurgeCache, DOTNETNUKE
DotNetNuke.Modules.Events.EventNotification, DotNetNuke.Modules.Events
I don't think any of these could affect these folders could they?
FYI, Our set-up comprises of two web servers pointing at a single file server
We also saw a number of shutdowns very similar to these last week albeit at a much earlier time (approx 18:30 rather than 22:00).
Can you give us any other suggestions as to how these folders could have been updated and hence the shutdowns could have happened?
Could there be something else causing these shutdown's, possibly even generating these event logs, that we haven't considered?
Any help you could provide would be most appreciated.