Если вы используете AzureChina, возможно включить его.
if your mysql is only master node, you need ask request to enable it by azure customer service center, create ticket to them.
if your mysql has replica node, the binlog parameter should be enabled by default.
проверить, работает ли он:
mysql> show variables like '%log_bin%';
+---------------------------------+------------------------------+
| Variable_name | Value |
+---------------------------------+------------------------------+
| log_bin | ON |
| log_bin_basename | c:\work\binlogs\mysql-bin |
| log_bin_index | c:\mysqldata\mysql-bin.index |
| log_bin_trust_function_creators | OFF |
| log_bin_use_v1_row_events | OFF |
| sql_log_bin | ON |
+---------------------------------+------------------------------+