Move Discourse to a new server without setting up the web UI first?

(Freddie Haddad) #1

Let’s say I want to move my Discourse site from one Amazon EC2 instance (e.g. t2.micro) to a larger instance (e.g. t2.medium), what is the correct procedure for this?

The only option I know about is:

  1. Backup the existing site
  2. Install Discourse on the new server
  3. Configure Discourse using temporary values
  4. Restore the backup

However, I’m thinking that the smart people at Discourse thought about this situation and there’s a way to restore a backup on a new installation without step 3.

Scouring the site, I wasn’t able to find a definitive answer.

I did look at Move your Discourse Instance to a Different Server, but the instructions seem to imply that a generic installation is already active on the target server and that you can log in and immediately perform a restore.

(Jay Pfaffman) #2

I think what you want to know is that you can copy the backup to the new instance and then restore from the command line like

cd /var/discourse
./launcher enter app
discourse enable_restore
discourse restore

The last command will give you a list of available backups and you can copy-and-paste to start the restore.

(Freddie Haddad) #3

@pfaffman thank you for helping with this question, there’s one spot where I’m still a bit unclear.

On the new server (assuming the prerequisites are already installed), after cloning the Discourse repository, do I still need to run discourse-setup? I don’t believe it’s possible to issue the commands

until after setup completes. Or am I incorrect? If I am correct, this is the part I’m referring to, you have to essentially provide a set of default values before you are able to perform a restore.

(Jay Pfaffman) #4

Yes, you still need to set up Discourse, but you can just use the same app.yml that you use on the old instance (or type them in to discourse-setup if that’s easier for you). But you have to have all of those values for a running Discourse anyway, so it’s not “temporary” values, but the values.

The command-line restore saves the you time of creating a temporary admin account that you’d use just to restore the backup.