Can you elaborate? It's just a plugin at that lives at /blue. In my experience it doesn't remove functionality at all. You can still use "normal" Jenkins just the same.
And you can easily switch between Blue Ocean and the Classic UI at will. Just look for the exit button at the top of the screen to get back to the equivalent page in classic then click "Open Blue Ocean" in classic to go to the equivalent place in Blue Ocean [1]
Exactly what I was thinking. When I access Jenkins, after having installed Blue Ocean, I'm still greeted with the traditional UI and the "Open Blue Ocean" button.
I do see the option in my user settings page but I don't understand what it's for. What is this "notifications URL"?
Jenkins issues all kinds of links to itself via email, Slack, HipChat and Github to refer to runs of pipelines or the homepage of jobs. When we do this, we send you to a well known URL that will redirect you to your preferred UI - Blue Ocean or "Classic" Jenkins. Thats what this preference controls. I hope this helps!
