since the bundle can't run without adding the routing, it'd be great if there were a recipe.

Since Symfony recipes are a pain, I've started using https://github.com/endroid/installer.

I can make a PR with that if you're okay with using that package. You can see his installer package in action at https://github.com/endroid/qr-code-bundle.

This is a nice bundle, thanks for releasing it.

When going to https://engine.example.org/health, it triggers a warning on the database-end:

May 22 14:36:13 database-1 mysqld: 2018-05-22 14:36:13 140580659341056 [Warning] Aborted connection 8701 to db: 'engineblock' user: 'engineblock' host: '10.2.16.3' (Got an error reading communication packets)

This only happens for engine and can be easily reproduced by going to the health-endpoint in a browser.
I've excluded HAproxy, loadbalancer, host-firewall and SElinux as a possible cause.. It seems to be a Doctrine-thing, since a SELECT 1; from CLI or some graphical tool is running just fine.

I think this works in MySQL, but not postgres:

                    // Perform a light-weight query on the chosen table
                    $query = 'SELECT * FROM `%s` LIMIT 1';
                    $this->entityManager->getConnection()->executeQuery(sprintf($query, $table->getName()));

when I remove the backticks, it works as expected for me, running postgres 16.

I thought doctrine had some sort of escape method that was database-specific, but I can't find it now.

FWIW, the table is doctrine_migrations_table