[Koha] [Important] Update your MySQL|MariaDB configuration to avoid data loss

[Jon Knight]

On Tue, 1 Aug 2017, Bortel, Gary wrote:
> For a multi-tenant installation with multiple MySQL databases...
>
> "The Solution" 
> (https://wiki.koha-community.org/wiki/DBMS_auto_increment_fix) 
> recommends adding "init-file=/var/lib/mysql/init-file_kohadev.sql" in 
> the my.cnf MySQL configuration file, then creating the appropriately 
> configured "init-file_kohadev.sql" file. Where there are multiple Koha 
> databases, should one add multiple "init-file=..." statements to my.cnf 
> as well as multiple init-file_kohadev.sql files? Or will MySQL only 
> accept one init-file directive in which case the .sql file would include 
> multiple blocks of code...one for each database?

I'd say that its up to you really - both will work.  If you use just one 
"init-file_kohadev.sql" file you'll just have to repeat all the SQL, just 
changing the database in the "use" line. If you've got lots of Koha 
instances that file is going to be quite long.

Personally for tidiness and ease of maintenance I'd probably opt for one 
init file per Koha database, as those would be clearer and could then be 
maintained more easily using normal Linux command line tools and a few 
Perl scripts.  I assume people hosting lots of tenants are probably 
using tools like Ansible to set up provisioning of a new Koha instance so 
these files would be created from a template and just one line 
added/removed from the my.conf file.

Jon