Which SQL O&M features does Cloud DBA provide?

The parameter innodb_log_buffer_size is used to set the size of the InnoDB log buffer, primarily to improve I
/O performance for writing logs. What is the default size in a 16-core, 64GB GaussDB (for MySQL) instance?

Which of the following methods cannot be used to view a table's fragmentation rate?

Which methods can be used to find fragmented tables in GaussDB (for MySQL)?

Which Huawei Cloud service is used to control external access operations to virtual machines?