text: create table t1(a serial) engine=innoDB;
  set global innodb_encrypt_tables=ON;
  show variables like 'innodb_encrypt%';
  Variable_name	Value
  innodb_encrypt_log	ON
  innodb_encrypt_tables	ON
  innodb_encrypt_temporary_tables	OFF
  innodb_encryption_rotate_key_age	2
  innodb_encryption_rotation_iops	100
  innodb_encryption_threads	4
  select count(*) from information_schema.innodb_tablespaces_encryption where current_key_version <> 1;
  count(*)
  0
  set global debug_key_management_version=10;
  select count(*) from information_schema.innodb_tablespaces_encryption where current_key_version <> 10;
  count(*)
  0
  SET GLOBAL debug_dbug = '+d,ib_log';
  SET GLOBAL innodb_log_checkpoint_now = 1;
  SET GLOBAL innodb_flush_log_at_trx_commit = 1;
  INSERT INTO t1 VALUES(NULL);
  # restart
  set global innodb_encrypt_tables=OFF;
  set global debug_key_management_version=1;
  select * from t1;
  a
  1
  drop table t1;
  