Background
In a PAAS model, it is simple to deploy and get an app running, but what is actually more important is familiarity with the administrative tools / UI they offer, especially when things go wrong when in Production!
We recently had an issue where an Azure App Service hosted app suddenly was not able to load - HTTP 500.30 error.
One of the first steps was obviously looking into the Event Log Viewer, but in an App Service, where can we find them?
Solution #1 - Portal
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In the Azure App Service page, click on Diagnose and solve problems tab
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In the Diagnose and solve problems tab, click on Diagnostic Tools option
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In the Diagnostic Tools tab, click on Application Event Logs and you should be able to see the list of events.
Solution #2 - Kudu
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In the Azure App Service page, click on Advanced Tools and then Go in the tab
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In the Kudu page, click on Tools in the menu bar, followed by Diagnostic dump
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It should auto or prompt for a download of a dump-xx zip file
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Inside of this zip file, there is an eventlog.xml which is the App Service events logs.
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