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< h1 > Hadoop: YARN-UI V2< / h1 > < section >
< h2 > < a name = "Prerequisites" > < / a > Prerequisites< / h2 >
< p > Please make sure Hadoop is built by passing -Pyarn-ui to Maven (reference to BUILDING.txt for more details)< / p > < / section > < section >
< h2 > < a name = "Configurations" > < / a > Configurations< / h2 >
< p > < i > In < code > yarn-site.xml< / code > < / i > < / p >
< table border = "0" class = "bodyTable" >
< thead >
< tr class = "a" >
< th align = "left" > Configuration Property < / th >
< th align = "left" > Description < / th > < / tr >
< / thead > < tbody >
< tr class = "b" >
< td align = "left" > < code > yarn.webapp.ui2.enable< / code > < / td >
< td align = "left" > < i > (Required)< / i > In the server side it indicates whether the new YARN-UI v2 is enabled or not. Defaults to < code > false< / code > . < / td > < / tr >
< tr class = "a" >
< td align = "left" > < code > yarn.webapp.ui2.war-file-path< / code > < / td >
< td align = "left" > < i > (Optional)< / i > WAR file path for launching yarn UI2 web application. By default this is empty and YARN will lookup required war file from classpath < / td > < / tr >
< / tbody >
< / table >
< p > Please note that, If you run YARN daemons locally in your machine for test purpose, you need the following configurations added to < code > yarn-site.xml< / code > to enable cross origin (CORS) support.< / p >
< table border = "0" class = "bodyTable" >
< thead >
< tr class = "a" >
< th align = "left" > Configuration Property < / th >
< th align = "left" > Value < / th >
< th align = "left" > Description < / th > < / tr >
< / thead > < tbody >
< tr class = "b" >
< td align = "left" > < code > yarn.timeline-service.http-cross-origin.enabled< / code > < / td >
< td align = "left" > true < / td >
< td align = "left" > Enable CORS support for Timeline Server < / td > < / tr >
< tr class = "a" >
< td align = "left" > < code > yarn.resourcemanager.webapp.cross-origin.enabled< / code > < / td >
< td align = "left" > true < / td >
< td align = "left" > Enable CORS support for Resource Manager < / td > < / tr >
< tr class = "b" >
< td align = "left" > < code > yarn.nodemanager.webapp.cross-origin.enabled< / code > < / td >
< td align = "left" > true < / td >
< td align = "left" > Enable CORS support for Node Manager < / td > < / tr >
< tr class = "a" >
< td align = "left" > < code > yarn.router.webapp.cross-origin.enabled< / code > < / td >
< td align = "left" > true < / td >
< td align = "left" > Enable CORS support for Yarn Router < / td > < / tr >
< / tbody >
< / table >
< p > Also please ensure that CORS related configurations are enabled in < code > core-site.xml< / code > . Kindly refer < a href = "../../hadoop-project-dist/hadoop-common/HttpAuthentication.html" > here< / a > < / p > < / section > < section >
< h2 > < a name = "Use_it" > < / a > Use it< / h2 >
< p > Open your browser, go to < code > rm-address:8088/ui2< / code > and try it!< / p > < / section > < section >
< h2 > < a name = "Notes" > < / a > Notes< / h2 >
< p > This UI framework is verified under security environment as well.< / p > < / section >
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