Configuring Services

Services, such as JobHistoryServer, can be launched as a task from the Myriad Framework.

About this task

IMPORTANT This component is deprecated. Hewlett Packard Enterprise recommends using an alternate product. For more information, see Discontinued Ecosystem Components.

To configure services, define the service in the Myriad configuration file, myriad-config-default.yml. Once defined, the Myriad Service REST API can be used to launch an instance as a task for the service.

The services and service properties are as follows:

<!-- Define services as a task -->
services:
    serviceName:        # Name of the service
    jvmMaxMemoryMB:     # Memory needed for service
    cpus:               # CPU needed for Service
    ports:              # Map of ports: port property and value
                        # (Default: 0 which indicates that port will be assigned randomly)
                        # Uses the syntax, <name>: <value>
    envSettings:        # Any environment settings
    taskName:           # Again service name
    maxInstances:       # If defined maximum number of instances this service can have per myriad framework
    command:            # Command to be executed
    serviceOptsName:    # Name of the env. variable that may need to be set for the service that will include env. settings

To configure additional services:

Procedure

  1. Edit the myriad-config-default.yml file.
  2. For the services property, specify a service and provide the appropriate parameters.
    For example, to define a TimeLineServer task: 
    services:
    jobhistory:
        jvmMaxMemoryMB: 64
        cpus: 0.5
        ports:
           myriad.mapreduce.jobhistory.admin.address: 10033
           myriad.mapreduce.jobhistory.address: 10020
           myriad.mapreduce.jobhistory.webapp.address: 19888
        envSettings:
        taskName: jobhistory
        serviceOptsName: HADOOP_JOB_HISTORYSERVER_OPTS
        command: $YARN_HOME/bin/mapred historyserver
        maxInstances: 1
    timelineserver:
        jvmMaxMemoryMB: 1024
        cpus: 1
        ports:
            myriad.mapreduce.timeline.address: 10200
            myriad.mapreduce.timeline.webapp.address: 8188
        envSettings:
        taskName: timelineserver
        command: $YARN_HOME/bin/yarn timelineserver
        maxInstances: 1
  3. Copy or update the myriad-config-default.yml file on every node in the cluster.
  4. Restart the initial Resource Manager from Marathon.