First, capture a backup file of your existing database. You will need to know the hostname, username, password, and database name of the database you wish to capture.
pg_dump -Fc --no-acl --no-owner \
-h your.db.hostname \
-U username \
databasename > mydb.dump
pg_dump has additional options if needed. For instance, if you wish to capture only specific tables in your database, use -t tablename1 -t tablename2.
Restoring data into Hydra
Using the captured data backup, you can copy your data into Hydra using pg_restore as follows. You will need the hostname, username, password, and database name of your Hydra database. You can find these on the Hydra dashboard.