MySQL Multi-Instances - Advanced Feature [ADDED]

[admin]

Artica Core with an isolated MySQL instance

This is not possible because Mysql Instances parameters are stored in the Mysql Core instance.
You need to have a first point to start...

[Friend7]

it is fine

because I would like to isolate Artica Core MySQL of all external threats.

It means having isolated MySQL instances for Wordpress, powerdns, zarafa and freewebs.

[Friend7]

How much RAM would I need for 3 MYSQL instances?

[admin]

3x what need the current Mysql server...
A mysql instance consume same memory of a standard mysql server

[Friend7]

What do you think?

Main MYSQL only for Artica Console (0.8 GB RAM) and 1 dedicated instance for Freewebs, Zarafa, PowerDNS and WP (1.4 GB RAM)

My idea is to isolate Artica's MySQL server of any external threat

Does it make sense having those ones?

[admin]

sure