PostgresDB 08006: Connection Failure

What is PostgresDB 08006: Connection Failure

Check if the PostgreSQL service is running:On Linux, run sudo service postgresql status or systemctl status postgresql.On Windows, open the Services management console (services.msc) and check the status of the PostgreSQL service.Verify network connectivity to the PostgreSQL server:Use ping <PostgreSQL_server_IP> to check network reachability.Use telnet <PostgreSQL_server_IP> 5432 or nc -zv <PostgreSQL_server_IP> 5432 to check if the port is open and accessible.Examine the PostgreSQL server logs for any errors or warnings that might indicate why connections are failing. The location of the log files varies but commonly can be found in /var/log/postgresql/ on Linux systems.Ensure that PostgreSQL is configured to accept connections from your IP address. Check the pg_hba.conf file for appropriate host entries that match your client's IP address or subnet.Make sure the PostgreSQL server is listening on the correct interface and port. Check the postgresql.conf file for the listen_addresses and port settings. You can also use netstat -tnlp | grep <port> (Linux) or netstat -an | find "<port>" (Windows) to verify if PostgreSQL is listening on the expected port.If you suspect a recent configuration change has caused the issue, consider rolling back the change if possible or reviewing the changes for errors.Restart the PostgreSQL service:On Linux, run sudo service postgresql restart or systemctl restart postgresql.On Windows, use the Services management console to restart the PostgreSQL service.