pg_dumpall [保留]后，无法在docker中还原psql DB

Question

I have a docker which contain a postgresql database.

I want to try my backup from zabbix with a restauration to a new contener.

These 2 conteners have same IP, same info, just the the port changing.

With this command I create my dumpall :

docker exec number_of_contener1 pg_dumpall -c --username=username > /tmp/dump.sql

And with this one I try to restore, to the other contener (no pg_restore since it's a text file) :

docker exec number_of_contener2 psql --username=username -d name_of_database < /tmp/dump.sql

I have no error, but I don't see anything in my database with \\dt .

My dump.sql is not empty, but my /var/log/postgresql on my contener is.

What am I doing it wrong? (I'm not a linux expert).

Thank you by advance

Answer 1

You need to use interactive mode to read a file from your local machine:

docker exec -i number_of_contener2 psql --username=username -d name_of_database < /tmp/dump.sql

Note that using > and < cause Docker to write and read data to/from your host OS, not the OS running in the container. If you want psql to read data in from a file (basically, interactively), you need to pass in the -i or --interactive flag.