Upgrading Postgres instead of schema change: 18 May, 2020

Hello!

We’ve long procrastinated upgrading our production Postgres installation and we’ve decided to forego a schema change upgrade and instead upgrade Postgres to version 12.x. (We will migrate to whatever the latest stable version in the 12.x series will be).

This means that on 18 May we will not make any changes to the MusicBrainz schema, but  we will have some amount of down-time and/or read-only time while we upgrade Postgres on our production servers. We haven’t sorted out all of the exact details of how we will carry out this database upgrade, but the date is now confirmed.

If you operate a replicated instance of the MusicBrainz database we STRONGLY urge you to upgrade your installation shortly after we upgrade the production servers. After this release our team may start using Postgres features not available in Postgres 9.5.x, which is our current production version.

As usual for our releases that impact our downstream users, we will post many more details closer to the date and once the migration is complete, we will post detailed instructions on how you can upgrade your own installation.

Please post any questions you may have!

Thanks!

Please nominate us for the Open Publishing Awards!

We’ve recently found out about the Open Publishing Awards::

The goal of the inaugural Open Publishing Awards is to promote and celebrate a wide variety of open projects in Publishing.

All content types emanating from the Publishing sector are eligible including Open Access articles, open monographs, Open Educational Resource Materials, open data, open textbooks etc.

Open data? That’s us! We’ve got a pile of it and if you like the work we do, why not nominate us for an award?

Thanks!

MusicBrainz Schema change upgrade downtime: 17:00 UTC (10am PST, 1pm EST, 19:00CEST)

Hi!

At 17:00 UTC (10am PST, 1pm EST, 19:00CEST) we will start the process of our schema change release. The exact time that we plan to start the change will depend on how long it takes to finish our preparations, but we expect it to be shortly after 17:00UTC.

Once we start the process we will put a banner notification on musicbrainz.org and we will also post updates to the @MusicBrainz twitter account, so follow us there for more details.

After the release is complete, we will post instructions here on how to upgrade your replicated MusicBrainz instances.

Freedb gateway: End of life notice, March 18, 2019

Many moons ago people clamoured for a way for them to use MusicBrainz via their old FreeDB (and others) enabled players. The hope was that this would be a short term solution as more players picked up MusicBrainz support so we created the FreeDB gateway that allowed old clients to use an ancient interface to look up CDs with MusicBrainz.

We’ve been maintaining this gateway for over 11 years now and recently we had a user asking questions about their new music player and that they were having a hard time getting it to work with our FreeDB gateway.

Wait, what? Someone is developing specifically for a stop-gap measure? Clearly the goal of FreeDB gateway has been misconceived and people are not treating it as a gateway to using the proper MusicBrainz API endpoints.

We’re no longer keen on supporting this gateway and have been having trouble finding volunteers to maintain it. Our internal staff has enough to do with our own duties and have no interest in further maintaining this and neither do I.

For these reasons the FreeDB gateway is going away in 6 months time; March 18 will be the absolute last day that the gateway will be functioning. Should something crash and the gateway experience problems before then, we’ll just kill the VM that the gateway is running on and call it a day.

11 years of temporary is enough — if you use this service, migrate to a proper MusicBrainz endpoint right now!

AcousticBrainz migration: We’re on!

We had to postpone the migration of AcousticBrainz last week since we ran out of time (our database is getting to be sizable!). We’ve migrated the bulk of our data and are now ready to move the last bits and call the move complete.

Downtime will start very soon — follow us on twitter for more detailed updates.

AcousticBrainz downtime: Migrating hosting to our other servers

Today we’re going to migrate the AcousticBrainz service from its standalone server that we’ve rented in the past few years to our shared infrastructure at Hetzner. We’ve been prepping for this move for a few weeks now and the actual process to follow has been used before, so we don’t expect the downtime to be more than 1 hour.

We’re sorry for the downtime that will be coming — to keep up with what we’re doing, please follow our progress on Twitter. We hope to start the migration in the next hour or two from when this blog post goes up.