Just to add more specific use-case of YARN UI.
BTW my KNOX service was running behind another FE proxy.
When I typed https://<MY_FE_PROXY>/gateway/sandbox/yarn in my browser, I saw 
the message " This is standby RM. Redirecting to the current active RM: 
http://<PRIMARY_DIRECT_YARN_UI_HOST>:8088/cluster". 
At this time, my browser also tried to connect to 
"http://<DIRECT_YARN_UI_HOST_PRIMARY>:8088/cluster"  but it's timed out because 
the YARN internal host was behind the firewall  and was not directly accessible 
through browser.

Looks like Knox was sending a response to FE proxy with a header "Refresh: 3; 
url=http://<DIRECT_YARN_UI_HOST_PRIMARY>:8088/cluster". My question is : is 
there a way for Knox to replace the internal Yarn Host or endpoint with 
something like knoxy endpoint.
Regards,Mohammad

 

    On Tuesday, November 1, 2016 12:24 PM, Mohammad Islam <[email protected]> 
wrote:
 

 Hi,I'm wandering if there is any built-in support in Knox for any (NN/RM) UI 
to automatically forward to active NN/RM.
I saw there is HA support in WebHDFS level. But not sure if I need to do 
anything special for HDFSUI. The same is true for YARNUI.
Regards,Mohammad


   

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