Upgrading from MariaDB 10.3 to MariaDB 10.4

How to Upgrade

For Windows, see Upgrading MariaDB on Windows instead.

For MariaDB Galera Cluster, see Upgrading from MariaDB 10.3 to MariaDB 10.4 with Galera Cluster instead.

Before you upgrade, it would be best to take a backup of your database. This is always a good idea to do before an upgrade. We would recommend mariadb-backup.

The suggested upgrade procedure is:

1. Modify the repository configuration, so the system's package manager installs MariaDB 10.4. For example,

• On Debian, Ubuntu, and other similar Linux distributions, see Updating the MariaDB APT repository to a New Major Release for more information.

• On RHEL, CentOS, Fedora, and other similar Linux distributions, see Updating the MariaDB YUM repository to a New Major Release for more information.

• On SLES, OpenSUSE, and other similar Linux distributions, see Updating the MariaDB ZYpp repository to a New Major Release for more information.

1. Stop MariaDB.

2. Uninstall the old version of MariaDB.

• On Debian, Ubuntu, and other similar Linux distributions, execute the following:sudo apt-get remove mariadb-server

• On RHEL, CentOS, Fedora, and other similar Linux distributions, execute the following:sudo yum remove MariaDB-server

• On SLES, OpenSUSE, and other similar Linux distributions, execute the following:sudo zypper remove MariaDB-server

1. Install the new version of MariaDB.

• On Debian, Ubuntu, and other similar Linux distributions, see Installing MariaDB Packages with APT for more information.

• On RHEL, CentOS, Fedora, and other similar Linux distributions, see Installing MariaDB Packages with YUM for more information.

• On SLES, OpenSUSE, and other similar Linux distributions, see Installing MariaDB Packages with ZYpp for more information.

1. Make any desired changes to configuration options in option files, such as my.cnf. This includes removing any options that are no longer supported.

2. Start MariaDB.

3. Run mysql_upgrade.

• mysql_upgrade does two things:

  1. Ensures that the system tables in the [mysq](../../../../reference/sql-statements-and-structure/sql-statements/administrative-sql-statements/system-tables/the-mysql-database-tables/README.md)l database are fully compatible with the new version.

  2. Does a very quick check of all tables and marks them as compatible with the new version of MariaDB .

Incompatible Changes Between 10.3 and 10.4

On most servers upgrading from 10.3 should be painless. However, there are some things that have changed which could affect an upgrade:

Options That Have Changed Default Values

Option	Old default value	New default value
Option	Old default value	New default value
slave_transaction_retry_errors	1213,1205	1158,1159,1160,1161,1205,1213,1429,2013,12701
wsrep_debug	OFF	NONE
wsrep_load_data_splitting	ON	OFF

Options That Have Been Removed or Renamed

The following options should be removed or renamed if you use them in your option files:

Option	Reason
Option	Reason

Authentication and TLS

• See Authentication from MariaDB 10.4 for an overview of the changes.

• The unix_socket authentication plugin is now default on Unix-like systems.

• TLSv1.0 is disabled by default in MariaDB 10.4. See tls_version and TLS Protocol Versions.

Major New Features To Consider

You might consider using the following major new features in MariaDB 10.4:

• Galera has been upgraded from Galera 3 to Galera 4.

• System-versioning extended with support for application-time periods.

• User password expiry

• Account Locking

• See also System Variables Added in MariaDB 10.4.

See Also

• The features in MariaDB 10.4

• Upgrading from MariaDB 10.3 to MariaDB 10.4 with Galera Cluster

• Upgrading from MariaDB 10.2 to MariaDB 10.3

• Upgrading from MariaDB 10.1 to MariaDB 10.2

• Upgrading from MariaDB 10.0 to MariaDB 10.1

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