Function app not logging to App insight

Question

Hi,

We have created a Function app with private endpoint and vnet integration.
But now Function app does not send logs to application insight.
The network setup is hub and spoke withe Azure firewall in the hub. So the dedicated subnet is using route table to the hub.

Information and what we have tested:

• Added VnetRouteAllEnabled to app settings.
• Added Application insight and Azure monitor FW rules in Azure Firewall.
• We can se logs in application filesystem.
• We don't se any logs in Azure firewall from function app regarding logs or monitor. We can se our function/code requests in Firewall logs.
• Application Insight is connected to Function app.
• If we disable vnet integration (Outbound) the application insight is getting logs.
• All RBAC roles is correct for log analytic, func app, app insight etc.
• No NSG is blocking traffic.

Thanks in advanced.

Best regards

Bengan

Answer 1

I'm pretty sure I've had to add this value for it to work in the app settings - I know it's for storage in the docs but seemed to light everything up when using private endpoints for the Functions.

WEBSITE_CONTENTOVERVNET = 1

If that works, feel free to mark as the accepted answer so others can know too!