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BUILDING_AN_INDEX.md

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Building an Index Image

Preflight's Operator policy (i.e. preflight check operator ...) requires access to an index image containing the Operator bundle under test.

The fastest way to do this is to utilize the opm tool to build an index image, publish that image, and then provide that to Preflight when executing your checks. To install the opm cli, visit the operator-framework/operator-registry releases page and download an appropriate binary for your system.

Building an Index With Your Bundle

For reference, the below instructions were executed using opm at the following version:

$ opm version
Version: version.Version{OpmVersion:"v1.18.0", GitCommit:"b826849", BuildDate:"2021-08-11T19:07:57Z", GoOs:"darwin", GoArch:"amd64"}

Your bundle must already be published to a registry in order to build your index image with that bundle.

Run the following command to create an index with the specified bundle, substituting your bundle's registry path, and the desired registry path of your index.

(NOTE: Docker users may need to specify the --container-tool=docker flag to this command)

opm index add --bundles registry.example.org/your-namespace/your-bundle:0.0.1 --tag registry.example.org/your-namespace/your-index:0.0.1

(sample output)

INFO[0000] building the index                            bundles="[registry.example.org/your-namespace/your-bundle:0.0.1]"
... truncated
INFO[0002] [podman build -f index.Dockerfile359827617 -t registry.example.org/your-namespace/your-index:0.0.1 .]  bundles="[registry.example.org/your-namespace/your-bundle:0.0.1]"

Then push this bundle to your registry of choice. This registry must be accessible to Preflight as well as the target cluster.

podman push registry.example.org/your-namespace/your-index:0.0.1

If the index image is stored in a private repository, set the value of PFLT_DOCKERCONFIG to the path of the docker configuration file.

Finally, set the value of PFLT_INDEXIMAGE to this value and run preflight:

export PFLT_INDEXIMAGE=registry.example.org/your-namespace/your-index:0.0.1
preflight check operator registry.example.org/your-namespace/your-bundle:0.0.1

For detailed information on how to use the opm tool, see Building an Index of Operators using opm