Enable multi-site support

Follow these steps to enable multi-site support:

• Create a new database and database user for the new site. Execute the following commands at the server console, remembering to replace the DATABASE_NAME, DATABASE_USER and DATABASE_PASSWORD placeholders with actual values.

    $ /opt/bitnami/postgresql/bin/psql -U postgres -c "CREATE DATABASE DATABASE_NAME; CREATE ROLE DATABASE_USER LOGIN PASSWORD 'DATABASE_PASSWORD'; GRANT ALL PRIVILEGES ON DATABASE DATABASE_NAME TO DATABASE_USER;"
    $ /opt/bitnami/postgresql/bin/psql -U postgres -d database_name -c "CREATE EXTENSION hstore; CREATE EXTENSION pg_trgm;"
  

• Create the Discourse multi-site config/multisite.yml configuration from the config/multisite.yml.production-sample sample file:

    $ sudo cp /opt/bitnami/discourse/config/multisite.yml.production-sample /opt/bitnami/discourse/config/multisite.yml
  

• Edit the new file to use the database created previously. Replace the DATABASE_NAME, DATABASE_USER and DATABASE_PASSWORD placeholders with actual values, and the HOSTNAME placeholder with the host name for the new site.

    database_name:
      adapter: postgresql
      database: DATABASE_NAME
      username: DATABASE_USER
      password: "DATABASE_PASSWORD"
      host: /opt/bitnami/postgresql
      pool: 25
      timeout: 5000
      db_id: 2    # ensure db_id is unique for each site
      ### If you change this setting you will need to
      ###   - restart sidekiq if you change this setting
      ###   - rebake all to posts using: `RAILS_ENV=production bundle exec rake posts:rebake`
      host_names:
        - HOSTNAME
  

• For testing purposes, add the new hostname to the /etc/hosts file, as below:

    IP_ADDRESS HOSTNAME
  

• Migrate the database:

    $ cd /opt/bitnami/discourse
    $ RAILS_ENV=production bundle exec rake multisite:migrate
  

• Create an administrative user:

    $ bin/rake admin:create RAILS_ENV='production' RAILS_DB=DATABASE_NAME
  

You should now be able to access your new site using the new domain name.