There are sample index mentioned in /logstash/pipelines/*, make sure to modify/replace with your required logstash index configs.
All the index mentioned in /logstash/pipelines/* are for reference purpose only.
Make sure to at least replace/configure jdbc_connection_string, jdbc_user, jdbc_password, statement, tracking_column, index, and document_id for logstash configuration files located in /logstash/pipelines/*.
After configuring logstash config file make sure to mention it in pipelines.yml