Why are the logs for the Windows App Service application logs unavailable between October 31 at 14:15 UTC and 19:20 UTC, despite being accessible before and after this period? This gap in logs appears to have prevented Auto-Heal from functioning.

Question

Why are the logs for the Windows App Service application logs unavailable between October 31 at 14:15 UTC and 19:20 UTC, despite being accessible before and after this period? This gap in logs appears to have prevented Auto-Heal from functioning.

Answer 1

Hi @Poovarasan Annadurai
Thanks for the question and using MS Q&A platform.
There are a few common reasons why logs may be unavailable or incomplete for a specific time period:

Log retention policy: By default, Azure App Service retains logs for a maximum of 12 hours. If your logs are older than this, they may have been automatically deleted.
more information about log retention: Manage audit log retention policies | Microsoft Learn

Log streaming configuration: If you are using a log streaming service such as Azure Log Analytics or Azure Event Hubs, there may be issues with the configuration that are preventing logs from being collected during the specified time period.

Service outage: It's possible that there was a service outage or other issue with Azure App Service during the specified time period that prevented logs from being collected or stored.

Auto-Heal Configuration: If Auto-Heal rules were not set up correctly, they might not trigger as expected due to the absence of relevant log data. This could happen if the conditions for triggering Auto-Heal were not met due to missing logs.

Diagnostic Settings: In Azure, if diagnostic settings for the App Service were not properly configured or were inadvertently changed, this could lead to gaps in logging. Ensuring that all necessary logs (application logs, HTTP logs, etc.) are enabled is crucial for continuous logging.

I hope this information is helpful.
If the answer is helpful, please click "Accept Answer" and kindly upvote it.