Migrate_to_s3 fails

Migrating uploads to S3 for ‘default’…
Uploading files to S3…

  • Listing local files
    find: ‘uploads/default/original’: No such file or directory
    => 0 files
  • Listing S3 files
    … => 81070 files
  • Syncing files to S3

Updating the URLs in the database…
Removing old optimized images…
Flagging all posts containing lightboxes for rebake…
54453 posts were flagged for a rebake
rake aborted!
FileStore::ToS3MigrationError: 53 posts are not remapped to new S3 upload URL. S3 migration failed for db ‘default’.
/var/www/discourse/lib/file_store/to_s3_migration.rb:132:in raise_or_log' /var/www/discourse/lib/file_store/to_s3_migration.rb:87:in migration_successful?’
/var/www/discourse/lib/file_store/to_s3_migration.rb:373:in migrate_to_s3' /var/www/discourse/lib/file_store/to_s3_migration.rb:66:in migrate’
/var/www/discourse/lib/tasks/uploads.rake:123:in migrate_to_s3' /var/www/discourse/lib/tasks/uploads.rake:102:in block in migrate_to_s3_all_sites’
/var/www/discourse/vendor/bundle/ruby/2.7.0/gems/rails_multisite-4.0.0/lib/rails_multisite/connection_management.rb:80:in with_connection' /var/www/discourse/vendor/bundle/ruby/2.7.0/gems/rails_multisite-4.0.0/lib/rails_multisite/connection_management.rb:90:in each_connection’
/var/www/discourse/lib/tasks/uploads.rake:100:in migrate_to_s3_all_sites' /var/www/discourse/lib/tasks/uploads.rake:96:in block in ’
/usr/local/bin/bundle:25:in load' /usr/local/bin/bundle:25:in
Tasks: TOP => uploads:migrate_to_s3
(See full trace by running task with --trace)

Yes, you may have already seen the discussion here:

Yes I just read this topic. I don’t use volumes, so I proceed to put discourse cdn url = “” , but I’m still getting the error.
I can’t find how to modify to_s3_migration.rb as @Falco suggested

Looking at the error message from your previous post, it’s the count on line 85 which is of interest. @Falco’s suggestion for editing the script is to increase that count to ignore some number of failures.

The simplest way to achieve that is by entering the container and using sed to make an in-place substitution on that specific line.

cd /var/discourse
./launcher enter app
sed -i '85s/0/100/' lib/file_store/to_s3_migration.rb

Run the rake task again after that and it will ignore up to 100 “post not remapped to new S3 upload URL” errors. The change will disappear the next time you rebuild.

For the error message in the original post, line 77 is the one of interest as @Falco referenced. Just replace the line number in the sed command:

sed -i '77s/0/100/' lib/file_store/to_s3_migration.rb

You can always reach out to vim by installing it with apt install vim inside the image.