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diff --git a/doc/book/connect/apps/index.md b/doc/book/connect/apps/index.md index 2b642049..05e7cad9 100644 --- a/doc/book/connect/apps/index.md +++ b/doc/book/connect/apps/index.md @@ -9,7 +9,7 @@ In this section, we cover the following web applications: |------|--------|------| | [Nextcloud](#nextcloud) | ✅ | Both Primary Storage and External Storage are supported | | [Peertube](#peertube) | ✅ | Must be configured with the website endpoint | -| [Mastodon](#mastodon) | ❓ | Not yet tested | +| [Mastodon](#mastodon) | ✅ | Natively supported | | [Matrix](#matrix) | ✅ | Tested with `synapse-s3-storage-provider` | | [Pixelfed](#pixelfed) | ❓ | Not yet tested | | [Pleroma](#pleroma) | ❓ | Not yet tested | @@ -224,7 +224,135 @@ You can now reload the page and see in your browser console that data are fetche ## Mastodon -https://docs.joinmastodon.org/admin/config/#cdn +Mastodon natively supports the S3 protocol to store media files, and it works out-of-the-box with Garage. +You will need to expose your Garage bucket as a website: that way, media files will be served directly from Garage. + +### Performance considerations + +Mastodon tends to store many small objects over time: expect hundreds of thousands of objects, +with average object size ranging from 50 KB to 150 KB. + +As such, your Garage cluster should be configured appropriately for good performance: + +- use Garage v0.8.0 or higher with the [LMDB database engine](@documentation/reference-manual/configuration.md#db-engine-since-v0-8-0). + With the default Sled database engine, your database could quickly end up taking tens of GB of disk space. +- the Garage database should be stored on a SSD + +### Creating your bucket + +This is the usual Garage setup: + +```bash +garage key new --name mastodon-key +garage bucket create mastodon-data +garage bucket allow mastodon-data --read --write --key mastodon-key +``` + +Note the Key ID and Secret Key. + +### Exposing your bucket as a website + +Create a DNS name to serve your media files, such as `my-social-media.mydomain.tld`. +This name will be publicly exposed to the users of your Mastodon instance: they +will load images directly from this DNS name. + +As [documented here](@/documentation/cookbook/exposing-websites.md), +add this DNS name as alias to your bucket, and expose it as a website: + +```bash +garage bucket alias mastodon-data my-social-media.mydomain.tld +garage bucket website --allow mastodon-data +``` + +Then you will likely need to [setup a reverse proxy](@/documentation/cookbook/reverse-proxy.md) +in front of it to serve your media files over HTTPS. + +### Cleaning up old media files before migration + +Mastodon instance quickly accumulate a lot of media files from the federation. +Most of them are not strictly necessary because they can be fetched again from +other servers. As such, it is highly recommended to clean them up before +migration, this will greatly reduce the migration time. + +From the [official Mastodon documentation](https://docs.joinmastodon.org/admin/tootctl/#media): + +```bash +$ RAILS_ENV=production bin/tootctl media remove --days 3 +$ RAILS_ENV=production bin/tootctl media remove-orphans +$ RAILS_ENV=production bin/tootctl preview_cards remove --days 15 +``` + +Here is a typical disk usage for a small but multi-year instance after cleanup: + +```bash +$ RAILS_ENV=production bin/tootctl media usage +Attachments: 5.67 GB (1.14 GB local) +Custom emoji: 295 MB (0 Bytes local) +Preview cards: 154 MB +Avatars: 3.77 GB (127 KB local) +Headers: 8.72 GB (242 KB local) +Backups: 0 Bytes +Imports: 1.7 KB +Settings: 0 Bytes +``` + +Unfortunately, [old avatars and headers cannot currently be cleaned up](https://github.com/mastodon/mastodon/issues/9567). + +### Migrating your data + +Data migration should be done with an efficient S3 client. +The [minio client](@documentation/connect/cli.md#minio-client) is a good choice +thanks to its mirror mode: + +```bash +mc mirror ./public/system/ garage/mastodon-data +``` + +Here is a typical bucket usage after all data has been migrated: + +```bash +$ garage bucket info mastodon-data + +Size: 20.3 GiB (21.8 GB) +Objects: 175968 +``` + +### Configuring Mastodon + +In your `.env.production` configuration file: + +```bash +S3_ENABLED=true +# Internal access to Garage +S3_ENDPOINT=http://my-garage-instance.mydomain.tld:3900 +S3_REGION=garage +S3_BUCKET=mastodon-data +# Change this (Key ID and Secret Key of your Garage key) +AWS_ACCESS_KEY_ID=GKe88df__CHANGETHIS__c5145 +AWS_SECRET_ACCESS_KEY=a2f7__CHANGETHIS__77fcfcf7a58f47a4aa4431f2e675c56da37821a1070000 +# What name gets exposed to users (HTTPS is implicit) +S3_ALIAS_HOST=my-social-media.mydomain.tld +``` + +For more details, see the [reference Mastodon documentation](https://docs.joinmastodon.org/admin/config/#cdn). + +Restart all Mastodon services and everything should now be using Garage! +You can check the URLs of images in the Mastodon web client, they should start +with `https://my-social-media.mydomain.tld`. + +### Last migration sync + +After Mastodon is successfully using Garage, you can run a last sync from the local filesystem to Garage: + +```bash +mc mirror --newer-than "3h" ./public/system/ garage/mastodon-data +``` + +### References + +[cybrespace's guide to migrate to S3](https://github.com/cybrespace/cybrespace-meta/blob/master/s3.md) +(the guide is for Amazon S3, so the configuration is a bit different, but the rest is similar) + ## Matrix |