Scorecard (alpha)

Overview

The scorecard command, part of the operator-sdk, executes tests on your operator based upon a configuration file and test images.

Tests are implemented within test images that are configured and constructed to be executed by scorecard.

Scorecard assumes it is being executed with access to a configured Kube cluster. Each test is executed within a Pod by scorecard, from which pod logs are aggregated and test results sent to the console.

Scorecard has built-in basic and OLM tests but also provides a means to execute custom test definitions.

Requirements

The scorecard tests make no assumptions as to the state of the operator being tested. Creating operators and custom resources for an operator are left outside the scope of the scorecard itself.

Scorecard tests can however create whatever resources they require if the tests are designed for resource creation.

Running the Scorecard

  1. Define a scorecard configuration file config.yaml. A sample configuration file config.yaml is found within the SDK repository. See the config file section for an explaination of the configuration file format. Unless you are executing custom tests, you can just copy the provided example configuration file into your project.
  2. Place the scorecard configuration file within your project bundle directory a the following location tests/scorecard/config.yaml.
    You can override the default location of the configuration file by specifying the --config flag.
  3. Execute the scorecard command. See the command args section for an overview of command invocation.

Configuration

The scorecard test execution is driven by a configuration file typically named config.yaml. The configuration file is located at the following location within your bundle:

tests/scorecard/config.yaml

Config File

A complete scorecard configuration file can be found here and used for running the scorecard pre-defined tests that ship with the SDK.

A sample of the scorecard configuration file may look as follows:

tests:
- name: "basic-check-spec"
  image: quay.io/operator-framework/scorecard-test:dev
  entrypoint:
  - scorecard-test
  - basic-check-spec
  labels:
    suite: basic
    test: basic-check-spec-test
  description: check the spec test
- name: "olm-bundle-validation"
  image: quay.io/operator-framework/scorecard-test:dev
  entrypoint:
  - scorecard-test
  - olm-bundle-validation
  labels:
    suite: olm
    test: olm-bundle-validation-test
  description: validate the bundle test

The configuration file defines each test that scorecard can execute. The following fields of the scorecard configuration file define the test as follows:

Config Field Description
image the test container image name that implements a test
entrypoint the command and arguments that are invoked in the test image to execute a test
labels scorecard-defined or custom labels that select which tests to run

Command Args

The scorecard command has the following syntax:

operator-sdk alpha scorecard [bundle path] | [bundle image name] [flags]

The scorecard requires a positional argument that holds either the on-disk path to your operator bundle or the name of a bundle image.

For further information about the flags see the CLI documentation.

Selecting Tests

Tests are selected by setting the --selector CLI flag to a set of label strings. If a selector flag is not supplied, then all the tests within the scorecard configuration file are executed.

Tests are executed serially, one after the other, with test results being aggregated by scorecard and written to stdout.

To select a single test (basic-check-spec-test) you would enter the following:

$ operator-sdk scorecard -o text --selector=test=basic-check-spec-test

To select a suite of tests, olm in this case, you would specify a label that is used by all the OLM tests:

$ operator-sdk scorecard -o text --selector=suite=olm

To select multiple tests, you could specify them as follows:

$ operator-sdk scorecard -o text --selector='test in (basic-check-spec-test,olm-bundle-validation-test)'

Built-in Tests

The scorecard ships with pre-defined tests that are arranged into suites.

Basic Test Suite

Test Description Test Name
Spec Block Exists This test checks the Custom Resource (CRs) created in the cluster to make sure that all CRs have a spec block. basic-check-spec-test

OLM Test Suite

Test Description Short Name
Bundle Validation This test validates the bundle manifests found in the bundle that is passed into scorecard. If the bundle contents contain errors, then the test result output will include the validator log as well as error messages from the validation library. See this document for details on bundles. olm-bundle-validation-test
Provided APIs have validation This test verifies that the CRDs for the provided CRs contain a validation section and that there is validation for each spec and status field detected in the CR. olm-crds-have-validation-test
Owned CRDs Have Resources Listed This test makes sure that the CRDs for each CR provided via the cr-manifest option have a resources subsection in the [owned CRDs section][owned-crds] of the CSV. If the test detects used resources that are not listed in the resources section, it will list them in the suggestions at the end of the test. olm-crds-have-resources-test
Spec Fields With Descriptors This test verifies that every field in the Custom Resources’ spec sections have a corresponding descriptor listed in the CSV. olm-spec-descriptors-test
Status Fields With Descriptors This test verifies that every field in the Custom Resources’ status sections have a corresponding descriptor listed in the CSV. olm-status-descriptors-test

Scorecard Output

The --output flag specifies the scorecard results output format.

JSON format

See an example of the JSON format produced by a scorecard test:

{
  "metadata": {
    "creationTimestamp": null
  },
  "log": "",
  "results": [
    {
      "name": "basic-check-spec",
      "description": "Custom Resource has a Spec Block",
      "state": "pass"
    }
  ]
}

Text format

See an example of the text format produced by a scorecard test:

	basic-check-spec                    : pass
	CR: 
	Labels: 

NOTE The output format spec matches the ScorecardOutput type layout.

Exit Status

The scorecard return code is 1 if any of the tests executed did not pass and 0 if all selected tests pass.

Extending the Scorecard with Custom Tests

Scorecard will execute custom tests if they follow these mandated conventions:

  • tests are implemented within a container image
  • tests accept an entrypoint which include a command and arguments
  • tests produce v1alpha2 scorecard output in JSON format with no extraneous logging in the test output
  • tests can obtain the bundle contents at a shared mount point of /bundle
  • tests can access the Kube API using an in-cluster client connection

Writing custom tests in other programming languages is possible if the test image follows the above guidelines.

Last modified May 28, 2020: add test (#3130) (69e47c2a)