THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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| Field | What is it used for | Sample Values |
|---|---|---|
| name | the name of the service. A name has to be unique among all the services that are included in the stack definition containing the service. | HDFS |
| displayName | the display name of the service | HDFS |
| version | the version of the service. name and version together uniquely identify a service. Usually, the version is the version of the service binary itself. | 2.1.0.2.0 |
| components | the list of component that the service is comprised of | <check out HDFS metainfo> |
| osSpecifics | OS specific package information for the service | <check out HDFS metainfo> |
| commandScript | service level commands may also be defined. The command is executed on a component instance that is a client | <check out HDFS metainfo> |
| comment | a short description describing the service | Apache Hadoop Distributed File System |
| requiredServices | what other services that should be present on the cluster | <check out HDFS metainfo> |
| configuration-dependencies | configuration files that are expected by the service (config files owned by other services are specified in this list) | <check out HDFS metainfo> |
| restartRequiredAfterRackChange | Restart Required After Rack Change | true / false |
| configuration-dir | Use this to specify a different config directory if not 'configuration' | - |
service/components - A service contains several components. The fields associated with a component are:
| Field | What is it used for | Sample Values | |||
|---|---|---|---|---|---|
| name | name of the component | HDFS | |||
| displayName | display name of the component. | HDFS | |||
| category | type of the component - MASTER, SLAVE, and CLIENT | 2.1.0.2.0 | |||
| commandScript | application wide commands may also be defined. The command is executed on a component instance that is a client | <check out HDFS metainfo> | |||
| cardinality | allowed/expected number of instances | For example, 1-2 for MASTER, 1+ for Slave | |||
| reassignAllowed | whether the component can be reassigned / moved to a different host. | true / false | |||
| versionAdvertised | does the component advertise its version - used during rolling/express upgrade | Apache Hadoop Distributed File System | |||
| timelineAppid | This will be the component name under which the metrics from this component will be collected. | <check out HDFS metainfo> | |||
| dependencies | the list of components that this component depends on | <check out HDFS metainfo> | |||
| customCommands | a set of custom commands associated with the component in addition to standard commands. | RESTART_LLAP (Check out HIVE metainfo) | restartRequiredAfterRackChange | Restart Required After Rack Change | true / false |
service/osSpecifics - OS specific package names (rpm or deb packages)
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