Steps to reproduce (on 5.4):
1. Simply install a 5.4, and update it according to the steps provided at:
2. Now fetch and install Solr according to the steps provided at:
3. When setting up your solr configuration on ezpublish.yml:
The "dsn" value is being fetched from parameters.yml, but on a 5.4 this value is not referred anywhere in that doc page for Solr.
From a customer's perspective, one wouldn't know what to write on parameters.yml or straight in ezpublish.yml.
On a master version though, the value is defined on parameters.yml as: