How to - Creating a data image

A data image is the source for future data containers that you will create with Spawn, they contain everything needed for the database engine as well as the databases and optionally, data. Data images can be created as empty or from backup/script files.

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This is the second in a series of short guides for getting up and running quickly with Spawn.

Image definition

Similar to Docker, an image is created based on a definition contained in a file. To get started quickly, we will create a simple image which will allow us to create an empty PostgreSQL container.

• Create a file development.yaml with your data image specifications.

  sourceType: empty
  name: dev
  engine: postgresql
  

Create a data image

To create the data image, we simply run a spawnctl command referencing the file created above.

spawnctl create data-image -f ./development.yaml

Seeing your image

View all your data images using the following command.

spawnctl get data-images

Using your data image

Now you have a data image available, you can create data containers.