Unable to update log level in host.json

Question

Steps to reproduce:

1. Set 'WEBSITE_RUN_FROM_PACKAGE' to 0 to allow host.json to be edited
2. Edit the host.json by changing the default log level from 'Informaion' to 'Trace'
3. Save the host.json
4. All the functions disappear and unavailable.

My expectation is that the functions should be available. If I set the 'WEBSITE_RUN_FROM_PACKAGE' back to 1, the functions are now available. However, the change I made to the log level in host.json is all gone.

Answer 1

MSFT confirmed that this was by-design. I found a work around by following the instructions under 'Override host.json values' on this post (https://learn.microsoft.com/en-us/azure/azure-functions/functions-host-json).