Hi, I have successfully configured Ceph dashboard following the this <https://docs.ceph.com/docs/master/mgr/dashboard> documentation. According to the documentation you can configure a URL prefix with this command: ceph config set mgr mgr/dashboard/url_prefix $PREFIX However when I try to access the dashboard with this URL http://$IP:$PORT/$PREFIX/ I get an error: {"status": "404 Not Found", "version": "8.9.1", "detail": "The path '/dashboard' was not found.", "traceback": "Traceback (most recent call last):\n  File \"/usr/lib/python2.7/dist-packages/cherrypy/_cprequest.py\", line 670, in respond\n    response.body = self.handler()\n  File \"/usr/lib/python2.7/dist-packages/cherrypy/lib/encoding.py\", line 220, in __call__\n    self.body = self.oldhandler(*args, **kwargs)\n  File \"/usr/lib/python2.7/dist-packages/cherrypy/_cperror.py\", line 415, in __call__\n    raise self\nNotFound: (404, \"The path '/dashboard' was not found.\")\n"} A workaround for this error is to use this URL: http://$IP:$PORT/#/$PREFIX/ Using the # ensures that redirect to active MGR service is working. Regards Thomas