kpm, the Kubernetes Package Manager

kpm is a package manager for Kubernetes. It is designed to be a simple CLI for managing Kubneretes-native applications.

To begin, it focuses on OLM's registry+v1 bundle and FBC catalog formats, but the intention is to expand it to support more Kubernetes-native application artifacts (e.g. helm charts)

Installation

go install github.com/joelanford/kpm@latest

What works-ish

1. Build a registry+v1 bundle and push it to an image registry

   $ cat << EOF > bundle.kpmspec.yaml
   apiVersion: specs.kpm.io/v1
   kind: Bundle
   registryNamespace: quay.io/joelanford
   bundleRoot: ./my-olm-package/0.0.1
   EOF
   
   $ kpm build bundle bundle.kpmspec.yaml
   Bundle written to my-olm-package-v0.0.1.bundle.kpm with tag "quay.io/joelanford/my-olm-package-bundle:v0.0.1" (digest: sha256:fe54318b20e00a37337058b569490e2e2df29fbaaf1af4761a11929e6d364ace)
   
   $ kpm push my-olm-package-v0.0.1.bundle.kpm
   pushed "my-olm-package-v0.0.1.bundle.kpm" to "quay.io/joelanford/my-olm-package-bundle:v0.0.1" (digest: sha256:fe54318b20e00a37337058b569490e2e2df29fbaaf1af4761a11929e6d364ace)
   

2. Build a catalog from a directory of KPM bundle files and push it to an image registry

   $ cat << EOF > catalog.kpmspec.yaml
   apiVersion: specs.kpm.io/v1
   kind: Catalog
   tag: "quay.io/joelanford/kpm-example-catalog:bundles"
   cacheFormat: none
   migrationLevel: all
   source:
      sourceType: bundles
      bundles:
        bundleRoot: ./bundles/
   EOF
   
   $ kpm build catalog catalog.kpmspec.yaml
   Catalog written to kpm-example-catalog-bundles.catalog.kpm with tag "quay.io/joelanford/kpm-example-catalog:bundles" (digest: sha256:96d2c28388eeb762d76211d509c1151491f290a709b92d0ba8180ff2638adcee)
   
   $ kpm push kpm-example-catalog-bundles.catalog.kpm
   pushed "kpm-example-catalog-bundles.catalog.kpm" to "quay.io/joelanford/kpm-example-catalog:bundles" (digest: sha256:96d2c28388eeb762d76211d509c1151491f290a709b92d0ba8180ff2638adcee)
   

3. Build a catalog from an existing FBC and push it to an image registry

   $ cat << EOF > catalog.kpmspec.yaml
   apiVersion: specs.kpm.io/v1
   kind: Catalog
   tag: "quay.io/joelanford/kpm-example-catalog:fbc"
   cacheFormat: json
   source:
     sourceType: fbc
     fbc:
       catalogRoot: ./catalog/
   EOF
   
   $ kpm build catalog catalog.kpmspec.yaml
   Catalog written to kpm-example-catalog-fbc.catalog.kpm with tag "quay.io/joelanford/kpm-example-catalog:fbc" (digest: sha256:0e258e37001a40fca5d627e87142b791ef1c5aa0cc780e5bd39e3251e52901d2)
   
   $ kpm push kpm-example-catalog-fbc.catalog.kpm
   pushed "kpm-example-catalog-fbc.catalog.kpm" to "quay.io/joelanford/kpm-example-catalog:fbc" (digest: sha256:0e258e37001a40fca5d627e87142b791ef1c5aa0cc780e5bd39e3251e52901d2)
   

4. Bundle a catalog from an FBC template and push it to an image registry

   $ cat << EOF > semver.yaml
   schema: olm.semver
   generateMajorChannels: true
   stable:
     bundles:
     - image: ./my-olm-package-v0.0.1.bundle.kpm
     - image: ./my-olm-package-v0.1.0.bundle.kpm
     - image: ./my-olm-package-v1.0.0.bundle.kpm
     - image: ./my-olm-package-v1.1.0.bundle.kpm
     - image: ./my-olm-package-v2.0.0.bundle.kpm
   EOF
   
   $ cat << EOF > catalog.kpmspec.yaml
   apiVersion: specs.kpm.io/v1
   kind: Catalog
   tag: "quay.io/joelanford/kpm-demo-catalog:semver-migrated"
   migrationLevel: bundle-object-to-csv-metadata
   cacheFormat: pogreb.v1
   source:
     sourceType: fbcTemplate
     fbcTemplate:
       templateFile: semver.yaml
   EOF
   
   $ kpm build catalog catalog.kpmspec.yaml
   Catalog written to kpm-demo-catalog-semver-migrated.catalog.kpm with tag "quay.io/joelanford/kpm-demo-catalog:semver-migrated" (digest: sha256:35fdf36ca04dc412fbed4c23573814c79319cce6723a97136c4a3ad5aeff4941)
   
   $ kpm push kpm-example-catalog-fbc.catalog.kpm
   pushed "kpm-demo-catalog-semver-migrated.catalog.kpm" to "quay.io/joelanford/kpm-demo-catalog:semver-migrated" (digest: sha256:35fdf36ca04dc412fbed4c23573814c79319cce6723a97136c4a3ad5aeff4941)
   

5. Render a KPM file

   $ kpm render my-olm-package-v0.0.1.bundle.kpm -o yaml
   schema: olm.bundle
   package: my-olm-package
   name: my-olm-package.v0.0.1
   image: quay.io/joelanford/my-olm-package-bundle:v0.0.1
   ...