Enforcing storage engine¶
Percona Server for MySQL has implemented variable which can be used for enforcing the use of a specific storage engine.
When this variable is specified and a user tries to create a table using an
explicit storage engine that is not the specified enforced engine, the user
will get either an error if the NO_ENGINE_SUBSTITUTION SQL mode is enabled
or a warning if NO_ENGINE_SUBSTITUTION is disabled and the table
will be created anyway using the enforced engine (this is consistent with the
default MySQL way of creating the default storage engine if other engines
are not available unless NO_ENGINE_SUBSTITUTION is set).
In case user tries to enable enforce_storage_engine with engine that isn’t available, system will not start.
Note
If you’re using enforce_storage_engine, you must either disable
it before doing mysql_upgrade or perform mysql_upgrade with server
started with --skip-grants-tables.
Version specific information¶
- Percona Server for MySQL 8.0.13-4: The feature was ported from Percona Server for MySQL 5.7.
System variables¶
enforce_storage_engine¶
| Option | Description |
|---|---|
| Command Line: | Yes |
| Config file | Yes |
| Scope: | Global |
| Dynamic: | No |
| Data type | String |
| Default value | NULL |
This variable is not case sensitive.
Example¶
Adding following option to my.cnf will start the server with InnoDB as enforced storage engine.
enforce_storage_engine=InnoDB