Modify the blob copying script to update the blob service name.
This completes the migration and allows us to (at some point) clean up
local disk and remove the "mirror" service from the config.
Also include a script to copy existing blobs to Pure.
Local is still the primary.
Beta will keep using local disk service for Active Storage because I
think there are constraints on source IPs for the Pure cluster.
ref: https://3.basecamp.com/2914079/buckets/37331921/messages/8422006338
The script takes advantage of the fact that we can bind to the
existing untenanted database by adding it explicitly (and temporarily)
as a readonly shard to the database.yml, and so in the script
with_original_db is connected to the original database.
storage/tenants/%{tenant}/ is now the root directory for all
state stored for a particular tenant, including active storage and the
database.
We leave the existing files and production database in place after the
migration, in case we need to roll back (by reverting the code and
config).
We also don't do a granular active storage blob copy, since the
attachments are mostly on Account (and not on Bubble). Instead we
hardlink the blobs on disk (so we don't take up additional space with
duplicates).
Finally, we're manually adding the kamal-proxy hosts to the deploy
file, so that we can generate letsencrypt certs for the
subdomains. This is only intended to be a short-term solution, we'll
want something like a wildcard cert before we go live.
Mike Dalessio