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How to copy a PostgreSQL database to another machine.
1 answer
On the server I dumped to a file using these commands
user@server:~$ sudo -i -u postgres
postgres@server:~$ pg_dump databasename > dumpfile
Then I copied dumpfile to my machine and executed these commands in my machine
estela@mymachine:~$ sudo -i -u postgres
postgres@mymachine:~$ psql
psql (12.6 (Ubuntu 12.6-0ubuntu0.20.04.1))
Type "help" for help.
postgres=# DROP DATABASE databasename;
DROP DATABASE
postgres=# CREATE DATABASE databasename;
CREATE DATABASE
postgres=# \q
postgres@mymachine:~$ cat /tmp/dumpfile | psql databasename
It seems that it is also possible to do this in a single go without using an intermediate file.
pg_dump -C -h localhost -U serverDbUser databasename | psql -h mymachine -U estela databasename
Would not have worked for me because I have my ports closed and the DB can only be accessed locally in my machine. Still would have had to DROP the database in my machine before executing that command though.
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