Praveen, This could be the root cuase :
* Yarn node manager link with port 8042 is directly exposed, so it doesn’t. go thru knox gateway. * I believe that Knox doesn’t support Yarn Node Manager yet. Until otherwise we get better solution from knox community,I would open up port 8042 . Thanks Raja From: "Ravikumar, Praveen Krishnamoorthy" <[email protected]> Reply-To: "[email protected]" <[email protected]> Date: Wednesday, July 3, 2019 at 3:10 PM To: "[email protected]" <[email protected]>, "[email protected]" <[email protected]> Subject: Getting HTTP Error 404 on Accessing Container logs in YARN Greetings, I’m currently working to enable EMR UI’s (YARN/SparkHistory) using apache knox. As of now, I’m able to install knox and access these UI’s through browser. But when I was trying the access the logs under YARNUI -> Applications -> Logs, I’m getting HTTP 404 error. I have attached the topology XML and the screenshots with this mail. Could anyone please help me resolve this issue ? Images of the steps below, 1. Log Link [cid:[email protected]] 1. Error [cid:[email protected]] 1. Gateway log : [cid:[email protected]] Thanks, Praveen.
