Istruzioni per mettere postgres in HA Ubuntu https://arctype.com/blog/postgres-patroni/#main-components-of-postgresql-cluster RedHat/Centos https://digitalis.io/blog/technology/part1-postgresql-ha-patroni-etcd-haproxy/ https://digitalis.io/blog/postgresql/deploying-postgresql-for-high-availability-with-patroni-etcd-and-haproxy-part-2/ Spostare la directory di data https://www.digitalocean.com/community/tutorials/how-to-move-a-postgresql-data-directory-to-a-new-location-on-ubuntu-16-04 PgBouncer https://www.pgbouncer.org/