I have airflow 1.10.12 installed on a server and I’ve launched a dag with a trigger dag configuration which is json. I know how to access the config in my dag’s code, but I want to get it in Airflow UI. Where should I look?
It's not very convenient, but you can view the DAG run conf via Browse -> DAG Runs -> view "Conf" column (and filter for your specific DAG run).
There is code on the main branch which adds a separate DAG run page, but that's not released yet: https://github.com/apache/airflow/pull/19705.