Backup dedicated servers with failover?

Question

Backup

What is there - a dedicated server with a bunch of DBMS (mysql, postgresql, mongo, redis), several client accounts (~150 pcs.), all sorts of services (nginx/bind/postfix/dovecot/apache and several uwsgi servers). All this is backed up once a day via backupninja to a remote server via rsync.
What you want - a solution from the category of "set it and forget it", which will help with minimal downtime (ideally - without it), in the event of a crash of the main dedicated, quickly transfer all requests to a duplicating it - mail, web, etc.
Problem - is there any automated means to keep the second server fully up to date compared to the first one? I didn't google that. It remains only to configure replication for each of the DBMS + FS synchronization. I really don’t like the fact that it’s not very fast and easy to set up, and such a scheme does not look reliable enough. What other options are there?
Separately, I am interested in personal experience, who solves this problem for himself.

Answer 1

Good afternoon.
I would look towards AWS (Amazon Web Services).