Information
Enable connection_throttling on PostgreSQL Servers.
Rationale:
Enabling connection_throttling helps the PostgreSQL Database to Set the verbosity of logged messages which in turn generates query and error logs with respect to concurrent connections, that could lead to a successful Denial of Service (DoS) attack by exhausting connection resources. A system can also fail or be degraded by an overload of legitimate users. Query and error logs can be used to identify, troubleshoot, and repair configuration errors and sub-optimal performance.
Solution
From Azure Console
Login to Azure Portal using https://portal.azure.com
Go to Azure Database for PostgreSQL server
For each database, click on Server parameters
Search for connection_throttling.
Click ON and save.
Using Azure Command Line Interface 2.0
Use the below command to update connection_throttling configuration.
az postgres server configuration set --resource-group <resourceGroupName> --server-name <serverName> --name connection_throttling --value on