High availability: Galera cluster, Patroni cluster and HAProxy proxy

1 h 10 min Rocky Linux 9 Versions MariaDB Galera 10.11 à 11.8, Patroni 3 / 4, HAProxy 2.8+

Objective

Understand how a database service survives the loss of a server, operate the two architectures most widely used in companies (Galera for MariaDB, Patroni for PostgreSQL), and know how to step in when everything has stopped.

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