Putting it all together

Now that you have understood the architecture and terminologies, we will take a look at the general steps that are followed:

  1. Horizon/Trove CLI requests a new database instance and passes the datastore name and version, along with the flavor ID and volume size as mandatory parameters. Optional parameters such as the configuration group, AZ, replica-of, and so on can also be passed.
  2. The Trove API requests Nova for an instance with the particular image and a Cinder volume of a specific size to be added to the instance.
  3. The Nova instance boots and follows these steps:
    1. The cloud-init scripts are run (like all other Nova instances).
    2. The configuration files (for example, trove-guestagent.conf) are copied down to the instance.
    3. The guest ...

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