Upgrade and Maintenance
IONOS Cloud updates and patches your database cluster to achieve high standards of functionality and security. This includes minor patches for MariaDB and patches for the underlying operating system. Generally, these updates are unnoticeable and do not interrupt your operation. However, occasionally, IONOS restarts your MariaDB instance to allow the changes to take effect.
Prerequisites
Prepare for a downtime during the version upgrade.
Ensure the database cluster has enough available storage. While the upgrade is space-efficient (because it does not copy the data directory), some temporary data is written to the disk.
Currently, MariaDB only supports minor upgrades. IONOS replaces the mariadb
executable binaries with those from a newer version, followed by the execution of the mariadb-upgrade
command.
The process replicates data from the old version to the new version and the database switches to the new version. For more information about the upgrade process, refer to the MariaDB Documentation.
Any changes that could cause service interruptions, such as version upgrades, are performed during a one-hour weekly maintenance window, which may result in brief connection interruptions. We recommend reconnecting to resume and complete any transactions that may have been affected during the maintenance window. For more information about how to configure maintenance windows for MariaDB, see Set Up a MariaDB Cluster.
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