Plesk with Centralized Database and Network File System
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@Alexander Yamshanov
I strongly feel that this is a tutorial that is essentially well-intended, but not really suitable for daily practice.
I can give you many reasons, but I will give you 2 major reasons :
1 - as long as Plesk does not support secure SQL connections, any unfortunate event to one server will mean that the database cluster gets data over a very non-secure connection ....... that is not a good idea, certainly when taking into account that "an unfortunate event" can be the result of an attack, aimed at the creation of a situation in which one (or more) servers fail, in order to pick up data from unsecure ports or connections....
2 - any custom setup of a Galera or another database cluster cannot outperform the database cluster solutions that are offered by cloud service providers .... and that again brings us to the issue of secure SQL connections : the perfect "managed database clusters in the cloud" cannot be used, as long as there is no option to connect via a secure SQL connection with Plesk.
Sure, I might be mistaken, but please correct me if I am mistaken and if there is a way of establishing secure SQL connections with Plesk.
In my humble opinion, you have made a tutorial that can be used perfectly and it is a well-written fine tutorial .......... but try to add some comments with respect to the security aspect of the whole setup and/or what could and what should be done to make the whole infrastructure secure.
Kind regards.....