So I’m in the process of (re-) setting up my homelab and unsure about how to handle databases. Many images require a database, which the docker-compose usually provides inside the stack.
Now my question, shall I have 1 database container which is accessed by all containers? Or shall I have a separate container for each service?
For critical services, which shall have as few dependencies as possible I’m already using sqlite or a similar solution.
Also on a sidenote: I have two docker hosts, can I let the containers of 1 hypervisors use the same internal docker network?
No one said a single DB. You can have multiple DBs in a single container, and then use something like databacker/mysql-backup container which solves the complexity of multiple db backups for mariaDB and MySQL
Yes, terminology… I mean single instance. And although you can create pg_dumps of separate databases, a true (online) backup of separate databases is difficult. Tools like pgbackrest or barman don’t support it. (I mainly focus on Postgres)
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Backup / restore gets complicated if you have multiple apps in 1 dB
No one said a single DB. You can have multiple DBs in a single container, and then use something like databacker/mysql-backup container which solves the complexity of multiple db backups for mariaDB and MySQL
Yes, terminology… I mean single instance. And although you can create pg_dumps of separate databases, a true (online) backup of separate databases is difficult. Tools like pgbackrest or barman don’t support it. (I mainly focus on Postgres)