Installing for Administrators

The Myriad Scheduler can be configured to automatically download and run the Hadoop YARN binaries and get the Hadoop configuration from the resource manager. This means you won't have to install and configure Hadoop YARN on each machine. This information involves bundling Myriad and creating a tarball.

• Assumptions
• Building the Myriad Remote Distribution Bundle
  • Step 1: Build Myriad
  • Step 2: Deploy the Myriad Files
  • Step 3: Configure the Myriad Defaults
  • Step 4: Configure YARN to Use Myriad
  • Step 5: Create the Tarball
• Getting Started

Assumptions

The following are assumptions about your environment:

• You are using hadoop-2.7.0 downloaded from hadoop.apache.org. Specific vendor versions should work but may require additional steps.

NOTE: The default location for $YARN_HOME is /opt/hadoop-2.7.0.

Building the Myriad Remote Distribution Bundle

Before building Myriad, configure the Resource Manager as you normally would.

Step 1: Build Myriad

From the project root you build Myriad with the commands

./gradlew build

Step 2: Deploy the Myriad Files

To deploy the Myriad Scheduler and Executor files, copy the jar filess and configuration file to the following locations:

cp myriad-scheduler/build/libs/*.jar /opt/hadoop-2.7.0/share/hadoop/yarn/lib/
cp myriad-executor/build/libs/myriad-executor-0.1.0.jar /opt/hadoop-2.7.0/share/hadoop/yarn/lib/
cp myriad-scheduler/build/resources/main/myriad-config-default.yml /opt/hadoop-2.7.0/etc/hadoop/

Step 3: Configure the Myriad Defaults

Edit the $YARN_HOME/etc/hadoop/myriad-config-default.yml file to configure the default parameters. See the sample Myriad configuration file for more information. To enable remote binary distribution, you must set the following options:

frameworkSuperUser: admin              # Must be root or have passwordless sudo on all nodes!
frameworkUser: hduser                  # Should be the same user running the resource manager.
                                       # Must exist on all nodes and be in the 'hadoop' group
executor:
  nodeManagerUri: hdfs://namenode:port/dist/hadoop-2.7.0.tar.gz
yarnEnvironment:
YARN_HOME: hadoop-2.7.0                # This should be relative if nodeManagerUri is set

Step 4: Configure YARN to Use Myriad

Modify the YARN_HOME/etc/hadoop/yarn-site.xml file. See Myriad yarn-site.xml file

Step 5: Create the Tarball

The tarball has all of the files needed for the Node Managers and Resource Managers. The following shows how to create the tarball and place it in HDFS:

cd ~
sudo cp -rp /opt/hadoop-2.7.0 .
sudo rm ~/hadoop-2.7.0/etc/hadoop/yarn-site.xml
sudo tar -zcpf ~/hadoop-2.7.0.tar.gz hadoop-2.7.0
hadoop fs -put ~/hadoop-2.7.0.tar.gz /dist

Getting Started

You can now start the resource manager and attempt to flexup or flexdown the cluster. See Getting Started for information about using Myriad. See the Myriad Cluster API for more information about scaling.

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