Recover Discourse from a backup, adjust domain name

Roughly based on Move your Discourse instance to a different server post. But without using the web UI. Because sysadmins prefers terminal.

IMPORTANT: Make SURE the backup dump was generated from the same Discourse version the one you’ll import it into.

Copy from host backup into shared folder. Imagine you uploaded via SSH in your host home directory.

cp ~/snapshot.tar.gz /srv/webplatform/shared/backups/

Note that the folder /srv/webplatform/discuss/shared/standalone/backups/ from the docker host would end up to be in /shared/backups/ inside the container.

Enter the VM, make sure enable_restore is run from discourse cli utility

./launcher enter app
discourse enable_restore

Find the mounted backup file from within the container

ll /shared/backups/default/

Make sure /shared/backups/foo.tar.gz is readable by can read

chmod o+r /shared/backups/default/foo.tar.gz
discourse restore foo.tar.gz
discourse disable_restore

Remap domain name

discourse remap

Then, work on user uploads and regenerate assets. That’ll make sure ;

rake uploads:clean_up
rake posts:rebake

Refer to