Hola Oscar,
Venga chicos, un saludo y gracias anticipadas.
Y como me ha picado la curiosidad y aprovechando que ahora está de moda, le he preguntado a ChatGPT cómo lo haría "él", primero sin especificarlo, y luego aclarando que debería ir sin pérdida de servicio:
Describe the procedure for migrating a MySQL 5.1 replica with one master and
one slave to a MariaDB Galera.
Migrating a MySQL 5.1 replica with one master and one slave to a MariaDB Galera cluster involves the following steps:
Verify compatibility: Before starting the migration, ensure that your application is compatible with MariaDB Galera. This is important because Galera has some limitations and differences from standard MySQL, so it may require some application-level changes.
Upgrade MySQL to MariaDB: Upgrade MySQL 5.1 to MariaDB on both the master and the slave. This is necessary because Galera requires MariaDB instead of MySQL.
Install MariaDB Galera: Install MariaDB Galera on all nodes of the cluster. Ensure that the Galera version matches the MariaDB version.
Configure the Galera cluster: Modify the configuration files on all the nodes of the cluster to enable Galera replication. Specify the IP addresses of all the nodes in the wsrep_cluster_address parameter.
Prepare the MySQL master: Stop the MySQL master and take a backup of the database. This backup will be used to populate the Galera cluster.
Prepare the Galera nodes: Stop the MariaDB Galera on all nodes and clean up the existing database files. Restore the database backup from the MySQL master to one of the nodes of the cluster.
Bootstrap the cluster: Start the MariaDB Galera on the node where the database has been restored. This will create a new Galera cluster. Once the cluster is formed, start the Galera on the other nodes and join them to the cluster.
Replicate the data: After the cluster is formed, data from the original MySQL master can be replicated to the Galera cluster using standard MySQL replication tools.
Verify the replication: Once the data replication is complete, verify the replication by comparing the data in the original MySQL master with the data in the Galera cluster.
Update the application: Update the application to use the new Galera cluster instead of the original MySQL master-slave setup.
By following these steps, you can successfully migrate a MySQL 5.1 replica with one master and one slave to a MariaDB Galera cluster.
openia@kishpa.com
Describe the procedure for migrating a MySQL 5.1 Replication with one master and one slave to a MariaDB Galera without outage.
Migrating a MySQL 5.1 Replication with one master and one slave to a MariaDB
Galera without an outage involves the following steps:
Verify compatibility: Before starting the migration, ensure that your application is compatible with MariaDB Galera. This is important because Galera has some limitations and differences from standard MySQL, so it may require some application-level changes.
Install and configure MariaDB Galera: Install MariaDB Galera on all nodes of the cluster. Ensure that the Galera version matches the MariaDB version. Modify the configuration files on all the nodes of the cluster to enable Galera replication. Specify the IP addresses of all the nodes in the wsrep_cluster_address parameter.
Prepare the Galera nodes: Stop the MariaDB Galera on all nodes and clean up the existing database files. Take a backup of the database on the MySQL slave server.
Restore database backup to one node: Restore the database backup from the MySQL slave to one of the nodes of the Galera cluster.
Bootstrap the cluster: Start the MariaDB Galera on the node where the database has been restored. This will create a new Galera cluster. Once the cluster is formed, start the Galera on the other nodes and join them to the cluster.
Set up replication from the MySQL master to the Galera cluster: Configure the MySQL master to replicate data to the Galera cluster. This can be done by adding the Galera node as a slave in MySQL.
Verify the replication: Once the data replication is complete, verify the replication by comparing the data in the original MySQL master with the data in the Galera cluster.
Update the application: Update the application to use the new Galera cluster instead of the original MySQL master-slave setup.
By following these steps, you can successfully migrate a MySQL 5.1 Replication with one master and one slave to a MariaDB Galera without any outage. The application can continue to use the old MySQL master-slave setup during the migration, and the data will be replicated in the background to the new Galera cluster. Once the replication is complete, the application can be switched over to the new Galera cluster.
Por tanto, mi aproximación no parece ir desencaminada... :-D Mucha suerte, maestro!
PS.- Por cierto, veo que ClawsMail ya te setea el "All" en los mensajes salientes?
A reveure!!
Enric
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