How to filter Host.Function.Console logs between user-generated and platform-generated?

Question

Our azure functions are outputting an excessive amount of logs, especially ones with Properties.Category == 'Host.Function.Console'. The vast majority of these are platform-generated, with the entire content of the message being things like:

=> AzureFunctions_FunctionName:*** AzureFunctions_InvocationId:***

or

FROM "Position" AS p

I know I can set the logLevel of Function.* or Host.* higher than Information to filter these out, but then I believe I would also lose the custom logs we manually write in our code which are put in the same category.

What's the correct way to filter these logs so that we aren't sending excessive amounts of data to application insights?

Answer 1

Andrew Yang Thanks for posting your question in Microsoft Q&A. Currently, you can only adjust log level settings in host.json or category as you described above and check out Configure log levels for more info. Unfortunately, there is no option to customize user-generated vs platform-generated logs, and this is good feedback to post it in Azure Functions feedback (others can upvote it too). Also, I will pass feedback internally with our product team.

We have Solutions with high volume of telemetry that describes few alternatives and worth to take a look. I hope this helps and let me know if any questions.

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