You can now use different types of logs in Azure to manage and troubleshoot Azure Load Balancer:
- Audit logs
View all operations being submitted to your Azure subscriptions and their status. Audit logs are enabled by default, and they can be viewed in the Azure portal.
- Alert event logs
View the alerts that are raised for load balancer. This log is only written if a load balancer alert event is raised.
- Health probe logs
Check for probe health status, how many instances are online in the load balancer back-end, and percentage of virtual machines receiving network traffic from the load balancer.
For more information, refer to:
Log analytics for Azure Load Balancer.