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=============================================
Manage databases and users on Trove instances
=============================================
Assume that you installed Trove service and uploaded images with datastore of
your choice. This section shows how to manage users and databases in a MySQL
5.7 instance.
.. warning::
Currently, the Database and User API is only supported by mysql datastore.
For others, the recommended way is to get root password (``POST
/v1.0/{project_id}/instances/{instance_id}/root``) and communicate with the
database service directly for database and user management.
Manage root user
~~~~~~~~~~~~~~~~
For all the datastores, the user could enable root and get root password for
further database operations.
.. code-block:: console
$ openstack database root enable f22ce0d9-8c9c-403a-8599-2269761a66de
+----------+--------------------------------------+
| Field | Value |
+----------+--------------------------------------+
| name | root |
| password | I5nPpBj1qf1eGR1idQorj1szppXGpYyYNj4h |
+----------+--------------------------------------+
If needed, ``openstack database root disable <instance_id>`` command could
disable the root user.
Database and User management via Trove API
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Trove provides API to manage users and databases for mysql datastore.
.. code-block:: console
$ openstack database user list db-instance
+------+------+-----------+
| Name | Host | Databases |
+------+------+-----------+
| test | % | testdb |
+------+------+-----------+
$ openstack database user create db-instance newuser userpass --databases testdb
$ openstack database user list db-instance
+---------+------+-----------+
| Name | Host | Databases |
+---------+------+-----------+
| newuser | % | testdb |
| test | % | testdb |
+---------+------+-----------+
$ mysql -h 172.24.4.199 -u newuser -p testdb
Enter password:
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| testdb |
+--------------------+
2 rows in set (0.00 sec)
$ openstack database db create db-instance newdb
$ openstack database db list db-instance
+--------+
| Name |
+--------+
| newdb |
| sys |
| testdb |
+--------+
$ mysql -h 172.24.4.199 -u newuser -p newdb
Enter password:
ERROR 1044 (42000): Access denied for user 'newuser'@'%' to database 'newdb'
Manage access to databases
~~~~~~~~~~~~~~~~~~~~~~~~~~
With Trove API you can grant and revoke database access rights for existing
users.
.. code-block:: console
$ openstack database user grant access db-instance newuser newdb
$ openstack database user show access db-instance newuser
+--------+
| Name |
+--------+
| newdb |
| testdb |
+--------+
$ mysql -h IP_ADDRESS -u newuser -p newdb
Enter password:
$ openstack database user show access db-instance test
+--------+
| Name |
+--------+
| testdb |
+--------+
$ mysql -h IP_ADDRESS -u test -p newdb
Enter password:
ERROR 1044 (42000): Access denied for user 'test'@'%' to database 'newdb'
$ openstack database user revoke access db-instance newuser newdb
$ mysql -h IP_ADDRESS -u newuser -p newdb
Enter password:
ERROR 1044 (42000): Access denied for user 'newuser'@'%' to database 'newdb'
Delete databases
~~~~~~~~~~~~~~~~
Lastly, Trove provides API for deleting databases.
.. code-block:: console
$ openstack database db list db-instance
+--------+
| Name |
+--------+
| newdb |
| sys |
| testdb |
+--------+
$ openstack database db delete db-instance testdb
$ openstack database db list db-instance
+--------+
| Name |
+--------+
| newdb |
| sys |
+--------+
$ mysql -h IP_ADDRESS -u test -p testdb
Enter password:
ERROR 1049 (42000): Unknown database 'testdb'
|
