Upgrade datastore

You can upgrade the datastore version of the database instance. When you perform an upgrade, the system automatically manages data and configuration files of your database.

To perform datastore upgrade, you need:

  • A Trove database instance to be upgrade.

  • A guest image with the target datastore version.

This guide shows you how to upgrade MySQL datastore from 5.7.29 to 5.7.30 for a database instance.

Warning

Datastore upgrade could cause downtime of the database service.

Upgrading datastore

  1. Check datastore versions in the system

    In my environment, both datastore version 5.7.29 and 5.7.30 are defined for MySQL.

    $ openstack datastore list
    +--------------------------------------+-------+
    | ID                                   | Name  |
    +--------------------------------------+-------+
    | 50bed39d-6788-4a0d-8d74-321012bb6b55 | mysql |
    +--------------------------------------+-------+
    $ openstack datastore version list mysql
    +--------------------------------------+--------+
    | ID                                   | Name   |
    +--------------------------------------+--------+
    | 70c68d0a-27e1-4fbd-bd3b-f29d42ce1a7d | 5.7.29 |
    | cf91aa9a-2192-4ec4-b7ce-5cac3b1e7dbe | 5.7.30 |
    +--------------------------------------+--------+
    
  2. Create a new instance with datastore version 5.7.29

    Make sure the instance status is HEALTHY before upgrading.

    $ openstack database instance create test-mysql-upgrade \
      --flavor d2 \
      --size 1 \
      --nic net-id=$netid \
      --datastore mysql --datastore_version 5.7.29 \
      --databases testdb --users user:password
    $ openstack database instance list
    +--------------------------------------+--------------------+-----------+-------------------+---------+-----------------------------------------------+-----------+------+-----------+---------+
    | ID                                   | Name               | Datastore | Datastore Version | Status  | Addresses                                     | Flavor ID | Size | Region    | Role    |
    +--------------------------------------+--------------------+-----------+-------------------+---------+-----------------------------------------------+-----------+------+-----------+---------+
    | 32eb56b0-d10d-43e9-b59e-1e4b0979e5dd | test-mysql-upgrade | mysql     | 5.7.29            | HEALTHY | [{'address': '10.0.0.54', 'type': 'private'}] | d2        |    1 | RegionOne |         |
    +--------------------------------------+--------------------+-----------+-------------------+---------+-----------------------------------------------+-----------+------+-----------+---------+
    

    Check the MySQL version by connecting with the database:

    $ ip=10.0.0.54
    $ mysql -u user -ppassword -h $ip testdb
    mysql> SELECT @@GLOBAL.innodb_version;
    +-------------------------+
    | @@GLOBAL.innodb_version |
    +-------------------------+
    | 5.7.29                  |
    +-------------------------+
    
  3. Run upgrade

    Use openstack database instance upgrade command to upgrade the datastore of the instance.

    $ openstack database instance upgrade 32eb56b0-d10d-43e9-b59e-1e4b0979e5dd cf91aa9a-2192-4ec4-b7ce-5cac3b1e7dbe
    
  4. Wait until status changes from UPGRADE to HEALTHY

    Use openstack database instance list to check the current status.

    $ openstack database instance list
    +--------------------------------------+--------------------+-----------+-------------------+---------+-----------------------------------------------+-----------+------+-----------+---------+
    | ID                                   | Name               | Datastore | Datastore Version | Status  | Addresses                                     | Flavor ID | Size | Region    | Role    |
    +--------------------------------------+--------------------+-----------+-------------------+---------+-----------------------------------------------+-----------+------+-----------+---------+
    | 32eb56b0-d10d-43e9-b59e-1e4b0979e5dd | test-mysql-upgrade | mysql     | 5.7.30            | UPGRADE | [{'address': '10.0.0.54', 'type': 'private'}] | d2        |    1 | RegionOne |         |
    +--------------------------------------+--------------------+-----------+-------------------+---------+-----------------------------------------------+-----------+------+-----------+---------+
    $ openstack database instance list
    +--------------------------------------+--------------------+-----------+-------------------+---------+-----------------------------------------------+-----------+------+-----------+---------+
    | ID                                   | Name               | Datastore | Datastore Version | Status  | Addresses                                     | Flavor ID | Size | Region    | Role    |
    +--------------------------------------+--------------------+-----------+-------------------+---------+-----------------------------------------------+-----------+------+-----------+---------+
    | 32eb56b0-d10d-43e9-b59e-1e4b0979e5dd | test-mysql-upgrade | mysql     | 5.7.30            | HEALTHY | [{'address': '10.0.0.54', 'type': 'private'}] | d2        |    1 | RegionOne |         |
    +--------------------------------------+--------------------+-----------+-------------------+---------+-----------------------------------------------+-----------+------+-----------+---------+
    

    Check the MySQL version again:

    $ mysql -u user -ppassword -h $ip testdb
    mysql> SELECT @@GLOBAL.innodb_version;
    +-------------------------+
    | @@GLOBAL.innodb_version |
    +-------------------------+
    | 5.7.30                  |
    +-------------------------+