YAML

In the Ultra Transcenders books

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Each book explains YAML in context, with comparison tables and the common traps.

Terms in this definition

• FORMAT

  A DAX function that turns a value into text according to a format string, for instance "MMMM" to show a month's name. Since the output is text, numeric operations can't use it, and dynamic format strings were introduced to get around that.

• CRUD

  Shorthand for create, read, update and delete, the four basic things you do with data. Data-plane roles in Azure Cosmos DB, for instance, authorise those operations on items.

• Container

  Something that groups data. Blob Storage containers sit inside a storage account and hold blobs much as folders hold files; Cosmos DB containers hold items and set the scope for partitioning and throughput.

• Azure Container Registry

  Private Azure registry for container images. Images can be geo-replicated, cleaned up by retention policies and built by ACR Tasks, while webhooks let a push kick off continuous deployment.

Related terms

• Approvals and checks

  Resource owners configure these in the web portal rather than YAML, on environments, agent pools, repositories, secure files, variable groups and service connections; a stage can't use the resource until all pass. GitHub's equivalent: environment protection rules.

• Azure Machine Learning CLI v2

  Extension adding az ml commands to the Azure CLI, used to create jobs, assets, endpoints and deployments defined in YAML files.

• AzureAppConfigurationImport@10

  Pushes key-values into an App Configuration store from a file (properties, YAML or JSON) during a pipeline run; tags, a label, a key prefix and strict mode can be added if wanted.

• Classic pipelines

  Azure Pipelines definitions built in a web designer instead of YAML. Microsoft recommends YAML; classic ones remain supported, though new organisations can't create them by default.

• Conda specification

  To build a versioned Azure Machine Learning environment, this YAML file names the Python packages to be layered onto a base Docker image.

• Declarative Automation Bundles

  Describes jobs, pipelines and other workspace resources in YAML and deploys them together as one project; this is the recommended route to CI/CD. The product was renamed, but its databricks bundle commands did not change.

• Deployment group

  Found only in classic release pipelines: machines running a deployment agent, picked out by tags. In YAML, an environment with VM resources does the same job.

• Deployment job

  A special kind of YAML pipeline job, declared with - deployment:, aimed at an environment so that every release to it is logged, and run with a runOnce, rolling or canary strategy. Unlike an ordinary job, it does not fetch the source code by default.