Add More Services into CDH plugin

https://blueprints.launchpad.net/sahara/+spec/add-cdh-more-services

This specification proposes to add below services into CDH plugins: Flume, Sentry, Sqoop, SOLR, Key-Value Store Indexer, and Impala.

Those services can be added into CDH plugin by using CM API first_run to start them, which can save much effort to prepare and start those services one by one.

Problem description

Now services supported in Sahara CDH plugin is still limited. We want to add more services ASAP. They are Flume, Sentry, Sqoop, SOLR, Key-Value Store Indexer, and Impala.

Proposed change

Since we plan to use first_run to prepare and start those services, we will not need to call other CM APIs for those services in start_cluster() method.

The implementation will need below changes on codes for each service:

  • Add process names of the service in some places.
  • Add service or process configuration, and network ports to open.
  • Add service validation.
  • Modify some utils methods, like get_service, to meet more services.
  • Some other changes for a few specific services if needed.

Alternatives

None

Data model impact

None

REST API impact

None

Other end user impact

None

Deployer impact

None

Developer impact

None

Sahara-image-elements impact

None

Sahara-dashboard / Horizon impact

None

Implementation

Assignee(s)

Primary assignee:
ken chen
Other contributors:
ken chen

Work Items

The work items will be:

  • Change python codes in sahara/sahara/plugins/cdh.
  • Add more service resource files in sahara/sahara/plugins/cdh/resources.
  • Test and evaluate the change.

Dependencies

None

Testing

Use an integration test to create a cluster.

Documentation Impact

None

References

None