notes/postgres/move_data_directory.md

https://www.digitalocean.com/community/tutorials/how-to-move-a-postgresql-data-directory-to-a-new-location-on-ubuntu-18-04

copy the data sudo rsync -av /var/lib/postgresql /target_dir

rename original as a backup sudo mv /var/lib/postgresql/10/main /var/lib/postgresql/10/main.bak

point postgres to the new data directory sudo vim //etc/postgresql/14/main/postgres.conf data_directory = '/mnt/volume_nyc1_01/postgresql/10/main'

remove the old data sudo rm -Rf /var/lib/postgresql/10/main.bak