Configuring for JobHistoryServer and Other Services
Services, such as JobHistoryServer, can be launched as a task from the Myriad Framework. 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.
- In the case of multiple Myriad clusters, services can use resources dedicated to a specific Myriad cluster.
- When deconstructing a Myriad cluster, the service can be stopped with the cluster.
- All services for a particular Myriad cluster go under that Myriad Mesos framework.
To define a service in the myriad-config-default.yml file, add the following properties:
<!-- 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 The following example defines the parameter for JobHistoryServer and TimeLineServer tasks: <!-- Define services as a task --> services: jobhistory: jvmMaxMemoryMB: 1024 cpus: 1 ports: myriad.mapreduce.jobhistory.admin.address: 0 myriad.mapreduce.jobhistory.address: 0 myriad.mapreduce.jobhistory.webapp.address: 0 envSettings: -Dcluster.name.prefix=/mycluster taskName: jobhistory timelineserver: jvmMaxMemoryMB: 1024 cpus: 1 envSettings: -Dcluster.name.prefix=/mycluster2 taskName: timelineserver
Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.