Retrieving invocation details for failed Azure Function with App Insights

Question

I recently configured Application Insights on a few of my Azure functions which has been great and now I can see when and how often my function is failing. I've been logging some of the important data within the function that I've been able to see when I check the monitor tab on just the function like this,

Function View

Part of the reason we configured App Insights is because we can only see a limited number of responses in this standard function view. I'm looking here to find Invocation details and Log information but can't seem to locate it. Am I looking in the wrong place?

App Insights View

Answer 1

You can find data generated by function invocations in the following tables:

• traces - Logs created by the runtime and by function code.
• requests - One for each function invocation.
• exceptions - Any exceptions thrown by the runtime.
• customMetrics - Count of successful and failing invocations, success rate, duration.
• customEvents - Events tracked by the runtime, for example: HTTP requests that trigger a function.
• performanceCounters - Info about the performance of the servers that the functions are running on.

https://docs.microsoft.com/en-us/azure/azure-functions/functions-monitoring#query-telemetry-data

So you can try to explore "requests" and "customEvents" tables.

Answer 2

I'm looking here to find Invocation details and Log information but can't seem to locate it.

You could open your function insights and click the server request to open the operation details.

When your function is failed, it would show failed request details as your invocation details.

Also you could click the Exception below the Custom Data to get the detailed log information and you could click “…” to get the total information.

You could compare it with log information in azure function.

Note: The invocation information in App Insights is different form with Function log information.So you may miss some information.