ambari/contrib/views/capacity-scheduler

Capacity Scheduler View

Description

This View provides a UI to manage queues for the YARN Capacity Scheduler.

Requirements

• Ambari 2.1.0 or later
• YARN

Build

The view can be built as a maven project.

mvn clean install

The build will produce the view archive.

target/capacity-scheduler-???-SNAPSHOT.jar

Place the view archive on the Ambari Server and restart to deploy.

cp capacity-scheduler-???-SNAPSHOT /var/lib/ambari-server/resources/views/
ambari-server restart

Deploying the View

Use the Ambari Vagrant setup to create a cluster:

Deploy the Capacity Scheduler view into Ambari.

cp capacity-scheduler-???-SNAPSHOT /var/lib/ambari-server/resources/views/
ambari-server restart

From the Ambari Administration interface, create a view instance.

Property	Value
Details: Instance Name	CS_1
Details: Display Name	Queue Manager
Details: Description	Browse and manage YARN Capacity Scheduler queues
Properties: Ambari Cluster URL	http://c6401.ambari.apache.org:8080/api/v1/clusters/MyCluster
Properties: Operator Username	admin
Properties: Operator Password	password

Login to Ambari and browse to the view instance.

http://c6401.ambari.apache.org:8080/#/main/views/CAPACITY-SCHEDULER/???/CS_1

Local Development

If you want to perform UI development without having to build and redeploy the view package, you can mount the build target output as a symlink to your vagrant instance. UI changes will be picked-up with a browser refresh.

After building and deploying the View, delete the view work directory on the Ambari Server.

cd /var/lib/ambari-server/resources/views/work
rm -rf CAPACITY-SCHEDULER\{0.3.0\}/

Create a symlink from the vagrant machine running your Ambari Server to your local machine.

ln -s /vagrant/ambari/contrib/views/capacity-scheduler/target/classes/ CAPACITY-SCHEDULER\{0.3.0\}

Restart Ambari Server, login and browse to the view.

ambari-server restart
http://c6401.ambari.apache.org:8080/#/main/views/CAPACITY-SCHEDULER/0.3.0/CS_1

If you modify the view UI code on your machine and re-build, the UI will pickup the changes on browser refresh.